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A new species of the genus Coraciacarus (Gabuciniidae, Pterolichoidea) from
the huia Heteralocha acutirostris (Callaeatidae, Passeriformes), an extinct bird
species from New Zealand
J. Dabert a; G. Alberti b
a Department of Animal Morphology, Faculty of Biology, A. Mickiewicz University, Poznan, Poland b Zoological
Institute and Museum, Ernst-Moritz-Arndt University, Greifswald, Germany
Online Publication Date: 01 January 2008
To cite this Article Dabert, J. and Alberti, G.(2008)'A new species of the genus Coraciacarus (Gabuciniidae, Pterolichoidea) from the
huia Heteralocha acutirostris (Callaeatidae, Passeriformes), an extinct bird species from New Zealand',Journal of Natural
History,42:43,2763 — 2776
To link to this Article: DOI: 10.1080/00222930802354142
URL: http://dx.doi.org/10.1080/00222930802354142
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A new species of the genus Coraciacarus (Gabuciniidae, Pterolichoidea)
from the huia Heteralocha acutirostris (Callaeatidae, Passeriformes), an
extinct bird species from New Zealand
J. Dabert
a
* and G. Alberti
b
a
Department of Animal Morphology, Faculty of Biology, A. Mickiewicz University, Poznan,
Poland;
b
Zoological Institute and Museum, Ernst-Moritz-Arndt University, Greifswald, Germany
(Received 17 December 2007; final version received 20 July 2008)
We describe one new feather mite species Coraciacarus muellermotzfeldi sp. nov.
(Acari, Astigmata) found as dried corpses on the feathers of the museum skin of
the huia Heteralocha acutirostris (Gould, 1837) (Passeriformes, Callaeatidae).
This endemic New Zealand passerine bird is believed to have been extinct since
the beginning of the twentieth century. Comments on the systematic position of
the new species within the genus Coraciacarus are presented. A key to all known
species and subspecies of the genus is provided. The unusually wide host range of
Coraciacarus is discussed. The presence of a representative of this genus on a
passerine bird is an enigmatic phenomenon. It might be the result of horizontal
transfer from cuckoos (Cuculiformes) rather than ancient co-phylogenesis but this
hypothesis is only weakly supported by currently available data.
Keywords: extinct species; new species; feather mites; Coraciacarus;Heteralocha
Introduction
Feather mites (Astigmata, Analgoidea+Pterolichoidea) are specialized ectopar-
asites and commensals of birds and are known from hosts belonging to almost all
avian orders (with the possible exception of penguins). Their small size and very
effective morphological adaptations enable these mites to penetrate and inhabit
the whole body surface of the bird, especially the feather vanes and quills, downy
feathers and partly also the skin. The physical connection between feather mites
and bird plumage is so strong that even after a bird’s death the mites do not leave
its corpse but perish together with the host, remaining fixed as dried ‘‘mummies’’
on or in the feathers.
This phenomenon provides an excellent opportunity to examine feather
acarofauna on preserved birds in ornithological collections. In fact, most of about
2500 named species, especially from exotic or rare hosts, have been described from
dry museum bird skins. It also allows the discovery of the acarofauna of extinct bird
species if their skins have been preserved. Six feather mite species were described
from the museum exhibit of the Carolina parakeet Conuropsis carolinensis, the only
North American parrot, 100 years after this bird became extinct through the
destruction of its forest habitat (Mironov et al. 2005a). Also, the recently described
new Pterotrogus (Analgoidea, Pteronyssidae) species was discovered on the museum
skin of the ivory-billed woodpecker Campephilus principalis, a bird still believed by
*Corresponding author. Email: Jacek.Dabert@amu.edu.pl
Journal of Natural History
Vol. 42, Nos. 43–44, November 2008, 2763–2776
ISSN 0022-2933 print/ISSN 1464-5262 online
#2008 Taylor & Francis
DOI: 10.1080/00222930802354142
http://www.informaworld.com
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some ornithologists to exist despite the last reliable sightings of this species being in
the 1950s in North America and probably in the early 1990s in Cuba (Mironov et al.
2005b). The well-known example of the extinct Diplaegidia gladiator (Analgoidea,
Analgidae) from the passenger pigeon Ectopistes migratorius should not be included
in this list of discovered ‘‘museum fossils’’ because it was described when the
passenger pigeon was still alive (Haller 1882).
In the present paper we describe a new species of the feather mite genus
Coraciacarus Dubinin, 1956 (Pterolichoidea, Gabuciniidae) from preserved skins
of huia Heteralocha acutirostris. This extinct bird together with two other still
living species (kokako Callaeas cinerea and saddleback Philesturnus carunculatus)
belongs to the family Callaeatidae (wattlebirds), endemic to New Zealand. The
huia became extinct early in the twentieth century, mainly as the result of forest
destruction and intensive hunting for its decorative feathers (BirdLife
International 2004). It was unique as the only known bird species with a
completely different beak form and function in the male and female birds
(Figure 1).
Figure 1. Investigated individuals of huia Heteralocha acutorostris (Gould, 1837) from the
collection of the Zoological Institute and Museum, Ernst-Moritz-Arndt University,
Greifswald, Germany. Left – female, right – male.
2764 J. Dabert and G. Alberti
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Material and methods
The mite material was collected from dry museum skins of two individuals of the
huia Heteralocha acutirostris (Callaeatidae, Passeriformes), deposited in the
ornithological collection of the Zoological Institute and Museum, Ernst-Moritz
University of Greifswald, Germany. Mites were extracted from the sample according
to the scratching method of Gaud and Atyeo (1996) and preserved in 70% ethanol.
Before mounting, the desiccated mites were softened and cleared in 10% lactic acid at
+60uC for 2–3 days. For light microscope study mites were mounted on slides in
Faure medium (Evans 1992) and investigated under an Olympus BX50 light
microscope with differential interference contrast illumination.
The nomenclature of idiosomal chaetotaxy follows Griffiths et al. (1990),
gnathosoma and leg chaetotaxy is that of Atyeo and Gaud (1966). Measurements in
the descriptions are given in mm. The taxonomic system, Latin and common names
of hosts in the present study follow those of Sibley and Monroe (1990).
Systematics
Superfamily PTEROLICHOIDEA Gaud and Atyeo, 1977
Family GABUCINIIDAE Gaud and Atyeo, 1975
Genus Coraciacarus Dubinin, 1956
The genus Coraciacarus is morphologically a typical gabuciniid taxon with unusually
wide host range and may be defined as a euryxenic genus (in the sense of Euzet and
Combes 1980). Six morphologically uniform species, including one new species
described below, are distributed worldwide among four bird orders: Cuculiformes,
Coraciiformes, Musophagiformes and Passeriformes (Table 1). Also some Coraciacarus
species may show relatively wide host ranges, e.g. C. cuculi is reported from 19 species of
cuckoos belonging to two families and six genera. Similarly C. meropsi s.l. inhabits 15
species of bee-eaters of the genus Merops. Thus these polyxenic or oligoxenic species
(excluding the monoxenic new species) are stenoxenic parasites limited to smaller or
bigger groups of closely related host species.
The current generic diagnosis of the Coraciacarus (compiled after Gaud and
Atyeo 1975, 1996; de Alzuet et al. 1988) is as follows. In both sexes, two vertical setae
vi present; scapular setae se and fine setae si are inserted on one level; setae c2
hair-like; setae c3 dilated and lanceolate; anterior tarsi not longer than double the
length of the palps; solenidion s1present on genua I and II, absent or inserted
basally on genu III; setae cG on genu I setiform and elongated or short and more or
less dilated. In males adanal discs well developed with polydentate corolla; genital
acetabula positioned posterior to the level of the genital setae g. In females branches
of epigynum reach or encompass setae 3a; setae e2 dilated and lanceolate, setae f2
hair-like; genital acetabula posterior to level of setae gand anterior to the level of
setae 4a.
The generic diagnosis should be updated after including new species. In the new
species setae cG I are thick and long, similar to those in Aetacarus or Gabucinia, and
male genital acetabula are inserted laterally to setae g, posterior pair on the level of
the setae. We think that these differences do not justify the separation of the new
species into its own genus but rather widen the morphological diversity of the genus
Coraciacarus. However, this opinion may be changed after more possible hosts of the
genus have been analysed, especially of the family Callaeatidae.
Journal of Natural History 2765
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Table 1. Host range of Coraciacarus species.
Mite species Hosts Locality Data source
C. americanus de Alzuet, Cicchino
and Abrahamovich, 1988
Cuculiformes
Coccyzidae
Coccyzus americanus (L.) Argentina, USA 1
Coccyzus melacoryphus Vieillot Argentina 1
C. cuculi (Me´gnin and
Trouessart, 1884)
Cuculiformes
Centropidae
Centropus anselli Sharpe Congo, S Cameroon 4, 8
Centropus burchelli Swainson No locality is given 13
Centropus cupreicaudus Reichenow Congo 4
Centropus grillii Hartlaub Congo 4
Centropus monachus Ru¨ppell Congo 4, 9
Centropus senegalensis (L.) Cameroon, Congo 4
Cuculidae
Ceuthmochares aereus (Vieillot) Cameroon 4, 9
Chrysococcyx caprius (Boddaert) Cameroon, Congo 4, 8, 9
Chrysococcyx cupreus (Shaw) Angola, Cameroon, Congo 4, 8, 9
Chrysococcyx klaas (Stephens) Cameroon 4, 8, 9
Clamator glandarius (L.) Congo, Senegal 4, 9
Cuculus canorus L. Eurasia, Kenya 1, 2, 6, 10, 11, 12, 13
Cuculus clamosus Latham Congo 4
Cuculus fugax Horsfield NE Russia 2
Cuculus micropterus Gould NE Russia 2
Cuculus poliocephalus Latham NE Russia 2
Cuculus saturatus Blyth NE Russia 2
Oxylophus jacobinus (Boddaert) Congo 4
Oxylophus levaillantii (Swainson) Congo 4
Coccyzidae
Piaya cayana (L.) * S America 11
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Table 1. (Continued.)
Mite species Hosts Locality Data source
C. dithyridus Gaud, 1966 Musophagiformes
Musophagidae
Corythaixoides concolor (A. Smith) Congo 4
Corythaixoides personatus (Ru¨ppell) Rwanda 4
C. m. leptus Gaud, 1978 Coraciiformes
Meropidae
Merops bulocki Vieillot Cameroon, Ghana, Sudan, Togo 5, 3 {,7
Merops gularis Shaw Congo, Zaire 5, 7
Merops hirundineus A. A. H. Lichtenstein Zaire 5, 7
Merops oreobates (Sharpe) No locality is given 7
Merops pusillus P. L. S. Mu¨ller Central and S Africa 5, 7, 9
Merops variegatus Vieillot Zaire 5, 7
C. m. meropsi Dubinin, 1956
Merops albicollis Vieillot Cameroon, Togo, Zaire 5, 7, 9
Merops apiaster L. Europe, SE Africa, Zaire 2, 5, 7, 11, 13, 15
Merops bullockoides A. Smith{Angola, Congo, Kenya,
Mozambique
5, 7
Merops malimbicus Shaw No locality is given 7
Merops nubicoides Des Murs et Pucheran Angola, Rhodesia, Tanzania,
Zaire
5
Merops nubicus J. F. Gmelin Cameroon, Senegal, Togo, Zaire 3 {,5,7,9,11
Merops persicus Pallas Uzbekistan, Cameroon, Burundi,
Kenya, Uganda
2, 5, 9
Merops superciliosus L. Kenya, Mozambique, Zaire 5, 7
Merops viridis L. No locality is given 11
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Mite species Hosts Locality Data source
C. musophagi (Trouessart, 1886) Musophagiformes
Musophagidae
Crinifer piscator (Boddaert) Congo, Senegal, S Cameroon 4, 8, 9, 13, 14
Crinifer zonurus (Ru¨ppell) Congo 4
Musophaga violacea Isert Congo 4
Tauraco persa (L.) Congo 14
C. muellermotzfeldi sp. nov. Passeriformes
Callaeatidae
Heteralocha acutirostris (Gould) New Zealand present paper
*Most probably it is Coraciacarus americanus or similar species because Me´gnin and Trouessart (1884) did not recognize other than C. cuculi species at
this time.
{
Record needs to be verified.
{
C. meropsi under name Pterolichus cuculi.
Data sources: 1 – de Alzuet et al. 1988, 2 – Dubinin 1956, 3 – Gaud 1953, 4 – Gaud 1966, 5 – Gaud 1978, 6 – Gaud and Atyeo 1975, 7 – Gaud and Atyeo
1979, 8 – Gaud and Mouchet 1959, 9 – Gaud and Till 1961, 10 – Hull 1934, 11 – Me´gnin and Trouessart 1884, 12 – Radford 1953, 13 – Radford 1958,
14 – Trouessart 1886, 15 – Vassillev 1959.
Table 1. (Continued.)
2768 J. Dabert and G. Alberti
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Coraciacarus muellermotzfeldi sp. nov.
(Figures 2–4)
Type material
Male holotype (AMU G1/1), 5 male and 3 female paratypes from Heteralocha
acutirostris (Greifswald #3677), male, New Zealand, 1879, coll. Frank. Other
paratypes: 1 female from the same host species, female, same data (Greifswald
#3676). Holotype and paratypes (registration numbers AMU G1/1-8, G2/1) are
deposited at A. Mickiewicz University, Poznan, Poland.
Description
Male (holotype, Figures 2, 4A–D). Gnathosoma with trapeziform and transversely
striated subcapitulum, length to palpal tips 82, greatest width 91 (gnathosomal sizes
in five paratypes 80–83 by 86–89). Setae d1 foliform, tridentate, located on apico-
dorsal appendix of distal podomere (Figure 4A). Distal podomere with two
eupathidia and solenidion vclearly visible (Figure 4B). Idiosoma relatively stocky,
slightly narrowing terminally, length 520 (490–502), width at level of setae c2 244
(233–245), length to width ratio 2.1 (2.0–2.1). Terminal part of the body with long
opisthosomal lobes. Lobes triangular with medial near-square ledge and small
tongue-like tips. Interlobar cleft rectangular from tips to the median ledge, in
anterior part trapezoidal, total length 91 (90–95), width at level of setae h1 114 (98–
116).
Pronotal shield without ornamentation, shaped as flattened hexagon, length 128
(121–125), width at terminal margin 173 (160–169), with deep lateral incisions
encompassing bases of setae se, terminal margin straight with minute median
incision. Scapular setae se shaped as macrosetae, si minute, distance se–se 95 (94–99),
distance si–si 52 (47–52). Vertical setae vi hair-like, at least twice as long as distance
between them. Scapular shields absent; well sclerotized lateral bands in scapular
region present. Hysteronotal shield covers the entire hysteronotum, anterior margin
straight, length from anterior margin to bases of setae h3 370 (360–368), surface with
some transverse striae in anterior two-thirds. Lateral margin of hysteronotal shield
with short oblique incisions in midlength gl–e2. Terminal margin of the shield with
median weakly sclerotized area reaching anteriorly the level of lateral incisions
(Figure 2B). All dorsal and lateral hysteronotal setae short, e2,f2,h1 lanceolate,
remaining ones hair-like. Setae e1 set on the level or slightly anterior to the level of
gland openings gl. Setae e2 distinctly posterior to the level of ventral setae ps3. Setae
f2 posterior to the level of setae h2, lanceolate. Setae h1 short, distance between their
tips twice exceeds the length of the setae. Short setae ps1 set at anterior margin of
bases of setae h3. Terminal setae h2 and h3 shaped as long macrosetae, h3 shorter
than h2. Three pairs of dorsal cupules present: ia at the bases of setae c2,im
posterolateral to d2, and ip in middle distance e2–f2. Distances between hysteronotal
setae: c1–c1 73 (64–80), d1–d1 76 (63–106), e1–e1 78 (63–72), e2–e2 191 (184–195),
f2–f2 185 (165–198), c1–d1 78 (68–81), d1–d2 57 (45–65), d1–e1 83 (84–92), c2–d2 117
(103–109), d2–e2 164 (168–174), e2–f2 52 (51–59), e1–f2 173 (174–188).
Epimerites I free. Ventral propodosoma without cuticular shields. Basal parts of
wide lanceolate setae c3 and hairlike setae cp covered dorsally by flat semicircular
lateral body extension. Ventrolateral opisthosoma with narrow, well-sclerotized
Journal of Natural History 2769
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opisthoventral sclerites. Genital apparatus inserted subterminally on the level of
anterior ends of opisthoventral sclerites, length 35 (30–38), width 25 (20–27), without
genital apodemes. Genital acetabules set far anterior to genital apparatus, posterior
pair on the level or slightly anterior to the level of setae g, anterior pair distinctly
anterior to setae g(Figure 2A). Setae gset posterior to 3a, setae 3a slightly posterior
to 3b and situated approximately at level of tips of epimerites IIIa. Distances
between ventral setae: 3b–3a 37 (27–32), g–3a 52 (48–52), g–4a 96 (95–101), 4a–ps3
54 (49–54). Adanal discs 22 (23–27) in diameter, corolla with several teeth, distance
between centres of discs 100 (99–109).
All legs of similar length and width, without apophyses. Setae cG of genu I thick,
fishbone like, two to three times longer than genu (Figure 4D). Solenidion s1ongenu
III inserted dorsobasally. Seta kT absent on tibia IV. Tarsus IV with six setae, seta d
shaped as very short spine and shifted to middle length of the podomere (Figure 4C).
Female (paratype, Figures3, 4E,F). Gnathosoma shaped as in male, length in four
paratypes 89–91, width 95–100. Idiosoma elongated, parallel-sided, length 522–562,
Figure 2. Coraciacarus muellermotzfeldi sp. nov., male. (A) Ventral view, (B) dorsal view.
Setal designations of idiosoma after Griffiths et al. (1990).
2770 J. Dabert and G. Alberti
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width 249–260, length to width ratio 2.1–2.3. Opisthosoma with short triangular
opisthosomal lobes separated by shallow arched cleft; small triangular extension inserted
centrally in the cleft with terminal copulatoryopening. Well-sclerotized secondary sperm
ducts visible far anterior near setae d1 and d2 (Figures3B,4E).Supranalconcavity
absent. Lateral and terminal margins of opisthosoma strongly sclerotized.
Prodorsum shaped and sclerotized as in male, length of pronotal shield 131–138,
width 170–189, distances se–se 104–107, si–si 56–58, setae vi as in male. Hysteronotal
shield covers almost whole hysteronotum, anterior and posterior margins straight,
opisthonotal region with large U-shaped weakly sclerotized area (Figure 3B). Shield
with transverse (anterior) and longitudinal (posterior) network-like striation. All
dorsal and lateral hysteronotal setae short, e2 are longest one, wide and lanceolate
(length 45–48), remaining setae hair-like. Setae e1 set posterior to the level of gland
openings gl. Setae h1 set on margins of semicircular shields lying on lateral margins
Figure 3. Coraciacarus muellermotzfeldi sp. nov., female. (A) Ventral view, (B) dorsal view.
Journal of Natural History 2771
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of U-shaped desclerotized area. Setae ps1 four times shorter than distance between
them. Terminal setae h2 and h3 shaped as in male. Number and position of dorsal
cupules as in male. Distances between hysteronotal setae: c1–c1 77–83, d1–d1 85–98,
e1–e1 80–88, e2–e2 178–219, f2–f2 131–175, c1–d1 73–83, d1–d2 52–56, d1–e1 115–
122, c2–d2 111–119, d2–e2 193–205, e2–f2 49–55, e1–f2 153–169.
Sclerotization of ventral idiosoma as in male (with exception of lacking
opisthoventral sclerites). Epigynum variable in shape and size, from large horseshoe-
shape with length 57 and width 77 to relatively flat and arched with length 22 and width
59; respectively tips of branches either reaching the level of setae 3b and setae 3a are
inserted in middle length of branches or tips of branches not reaching bases of setae 3a
(Figure 4F). Distances between ventral setae: 3b–3a 35–47, g–3a 46–52, g–4a 56–65, 4a–
ps3 168–180. Setae ps2 set close to setae ps3, lateroterminally, distance ps2–ps2 only
slightly longer than distance ps3–ps3 (46–64 versus 49–78).
Differential diagnosis
Among five species previously described the new species is more similar to species
inhabiting cuculiform birds: Coraciacarus americanus de Alzuet, Cicchino and
Abrahamovich, 1988 and C. cuculi (Me´gnin and Trouessart, 1884). All these species
Figure 4. Coraciacarus muellermotzfeldi sp. nov., details. (A) Palpus, dorsal view, (B) palpus,
ventral view, (C) tibia and tarsus of leg IV in males, (D) genu of leg I, (E) secondary sperm
ducts in females, (F) morphological variability of epigynum shape in females. Setal
designations of legs and palps after Gaud and Atyeo (1996).
2772 J. Dabert and G. Alberti
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are well characterized by combination of the following characters: pronotal shield
incised laterally around setae se in both sexes, tips of lanceolate setae h1 widely
separated and setae e2 situated posterior to the level of bases of setae ps3 in males,
anterior part of hysteronotal shield well developed and with big desclerotized area on
opisthonotal part in females. The new species differs from these and all remaining
species by long and thick setae cG on genu I in both sexes and shifting of genital
acetabules slightly anterior to level of setae gin males; in other Coraciacarus species
setae cG I are either thin and long or thick and short, male genital acetabules are
situated posterior to genital setae. Moreover males of the new species differ also
from C. americanus and C. cuculi in the following characters: (1) distance between
tips of setae h1 twice exceeds the length of these setae in new species; distance
between tips of h1 as long as the length of these setae in both remaining species; and
(2) the main part of the hysteronotal shield is not separated from lobar parts in new
species; dorsal shields of opisthosomal lobes completely separated by wide oblique
gaps from the main part of hysteronotal shield in both remaining species. In
addition, females of the new species differ from C. americanus and C. cuculi in the
following characters: (1) setae ps2 set posterior to ps3, distance ps2–ps2 slightly
longer than ps3–ps3 in new species; setae ps2 set laterally to ps3, distance ps2–ps2
several times longer than ps3–ps3 in both remaining species, (2) terminal margin of
hysteronotal shield straight in new species; terminal margin of hysteronotal shield
with median extension in both remaining species.
Etymology
This species is named in honour of Prof. Dr Gerd Mu¨ller-Motzfeld, an outstanding
entomologist, former director of the institute, and head of the museum (Institute of
Zoology and Museum, Ernst-Moritz-Arndt University, Greifswald, Germany).
Remarks on host–parasite relationships
Co-phylogenetic analyses of feather mites have proven that the close co-speciation
with their hosts is the main evolutionary factor of their evolution in most cases
(Dabert 2005). It implies that common acarofauna of particular bird taxa originated
much more probably as a result of co-phylogenesis rather than colonization.
Coraciacarus inhabits birds from four orders: Cuculiformes, Coraciiformes,
Musophagiformes and Passeriformes. Being aware that drawing conclusions from
parasite phylogeny about the phylogenetic relationships between their hosts is a
prohibited procedure in phylogeny reconstruction we can suggest only that a
common Coraciacarus acarofauna of these four bird orders might point to close
relationships between some of them. The close phyletic relationships between
Musophagiformes and Cuculiformes, and to a lesser degree also to Coraciiformes,
are generally accepted (Livezey and Zusi 2007; but see also Sibley and Ahlquist
1990). The fourth host group, Callaeatidae, is undoubtedly a corvid member of the
Passeriformes (Barker et al. 2004; Shepherd and Lambert 2007), birds sometimes
treated as relatively close to Coraciiformes (Livezey and Zusi 2007) and sometimes as
very distant to the three remaining host orders of Coraciacarus (Sibley and Ahlquist
1990). Therefore it is very risky to conclude that the presence of Coraciacarus on
huia is a result of a common ancestry of this bird with the remaining three bird
orders and is a relic of an ancient co-speciation between the slowly evolving mite and
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its hosts. A more realistic explanation of the presence of Coraciacarus on
Heteralocha acustris is horizontal transfer. The only possible ‘‘donors’’ are cuckoos
(Cuculiformes) because bee-eaters (Coraciiformes, Meropidae) and turacos and
plantain-eaters (Musophagiformes) are not represented in the avifauna of New
Zealand. However, ambiguities still exists because the only two recent species of New
Zealand cuckoos (Chrysococcyx lucidus and Eudynamys taitensis) are typical brood
parasites and no data about possibly extinct cuckoos are available. The transfer from
foster parents to young cuckoo was frequently observed (Dubinin 1951) while the
reverse direction of mite transfer is practically impossible. The presence of non-
parasitic cuckoo(s) in the former avifauna of New Zealand is not confirmed. The
reasons for the presence of Coraciacarus on huia therefore remain unresolved at this
stage of our knowledge about the acarofauna of Callaeatidae and other recent and
extinct New Zealand birds.
Key to species of the genus Coraciacarus Dubinin, 1956
1. In both sexes pronotal shield incised laterally around setae se. . . . .... 4.
In both sexes pronotal shield not incised laterally. . .............. 2.
2. In both sexes setae si set much closer to respective setae se than to midline
of the shield. In males setae e2 thin, needle-like. In females rounded and
closed supranal concavity well developed on dorsoterminal end of
hysteronotum; setae e2 short, at most as long as half of the distance e2–h1.
............................. C. musophagi (Trouessart, 1886)
In both sexes setae si inserted equidistantly to respective setae se and midline
of the shield. In males setae e2 wide, lanceolate. In females closed supranal
concavity absent; setae e2 as long or longer than distance e2–h1 (C. meropsi
Dubinin, 1956) . . . ..................................... 3.
3. In males medial incision of terminal margin of hysteronotal shield very
short, several times shorter than distance e1–e1. In females length to width
ratio of idiosoma is 2.3–2.6; terminal lobes and interlobar cleft as flat
triangles, the length much smaller than the width of their bases.
................................ C. m. meropsi Dubinin, 1956
In males medial incision of terminal margin of hysteronotal shield at least as
long as distance e1–e1. In females length to width ratio of idiosoma is 3.0–
3.3; terminal lobes and interlobar cleft as sharp triangles, as long as the
width of their bases. . . . ................. C. m. leptus Gaud, 1978
4. In males tips of lanceolate setae h1 widely separated, e2 situated posterior to
the level of setae ps3 bases. In females anterior part of hysteronotal shield
well developed and with big desclerotized area on opisthonotal part. . . 5.
In males tips of needle-like setae h1 touching each other; setae e2 shifted
anterior to the level of setae ps3 bases. In females anterior part of
hysteronotal shield completely reduced from the level of trochanters III and
well sclerotized in opisthonotal part. . . . ...... C. dithyridus Gaud, 1966
2774 J. Dabert and G. Alberti
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5. In both sexes setae cG on genu I thick, fishbone-like. In males the main part
of hysteronotal shield not separated from lobar parts; posterior pair of genital
acetabula set on the level or anterior to the level of genital setae g. In females
setae ps2 set posterior to ps3, distance ps2–ps2 slightly longer than ps3–
ps3; terminal margin of hysteronotal shield straight . . ...............
..................................... C. muellermotzfeldi sp.n.
In both sexes setae cG on genu I thin, hair-like. In males the main part of
the hysteronotal shield completely separated by oblique gap from lobar
parts; both pairs of genital acetabula set posterior to the level of genital
setae g. In females setae ps2 set laterally to ps3,distanceps2–ps2 several
timeslongerthanps3–ps3; terminal margin of hysteronotal shield with
medianextension..................................... 6.
6. In males entire hysteronotal shield uniformly dotted. In females epigynum
arched, at most reaching by branch tips the bases of setae 3a.
....................... C. cuculi (Me´gnin and Trouessart, 1884)
In males anterior half of hysteronotal shield with transverse striae. In
females epigynum semicircular, branches long with bases of setae 3a inserted
in the middle of their length. . . . .............................
......... C. americanus de Alzuet, Cicchino and Abrahamovich, 1988
References
Atyeo WT, Gaud J. 1996. The chaetotaxy of sarcoptiform feather mites (Acarina: Analgoidea).
J. Kans. Entomol. Soc. 39:337–346.
Barker FK, Cibois A, Schikler P, Feinstein J, Cracraft J. 2004. Phylogeny and diversification
of the largest avian radiation. Proc Natl Acad Sci USA. 101:11040–11045.
BirdLife International. 2004. Heteralocha acutirostris [Internet]. c2007. Cambridge (United
Kingdom): IUCN Red List of Threatened Species]; [cited 2007 October 14]. Available
from: http://www.iucnredlist.org/.
Dabert J. 2005. Feather mites (Astigmata; Pterolichoidea, Analgoidea) and birds as models for
cophylogenetic studies. Phytophaga. 14:409–424.
de Alzuet ADB, Cicchino AC, Abrahamovich AH. 1988. Consideraciones taxono´ micas y
relaciones hospedatorias de los ge´neros Coraciacarus Dubinin 1956, Piciformobia Gaud y
Atyeo 1975 y Capitolichus Gaud y Atyeo 1975 (Acari, Astigmata, Gabuciniidae), con
descripcio´ n de tres nuevas especies. Rev Asoc Cienc Nat Litoral. 19:49–67.
Dubinin VB. 1951. Feather mites (Analgesoidea). I. Introduction to their study. Fauna SSSR.
Paukoobraznye 6(5):3–363. Russian.
Dubinin VB. 1956. Feather mites (Analgesoidea). III. Family Pterolichidae. Fauna SSSR.
Paukoobraznye. 6(7):3–814. Russian.
Euzet L, Combes C. 1980. Les proble`mes de l’espe`ce chez les animaux parasites. Mein Soc
Zool Fr. 40:239–285.
Evans GO. 1992. Principles of acarology. Wallingford (UK): C.A.B. International.
Gaud J. 1953. Sarcoptide´s plumicoles des oiseaux d’Afrique Occidentale et Centrale. Ann
Parasitol. 28:191–226.
Gaud J. 1966. Sarcoptiformes plumicoles (Analgoidea) parasites sur les oiseaux Cuculiformes
d’Afrique. Rev Zool Bot Afr. 73:317–338.
Gaud J. 1978. Acariens sarcoptiformes plumicoles des oiseaux Coraciiformes d’Afrique I.
Parasites des Meropidae. Rev Zool Afr. 92:1023–1052.
Journal of Natural History 2775
Downloaded By: [informa internal users] At: 09:49 16 December 2008
Gaud J, Atyeo WT. 1975. Gabuciniidae, famille nouvelle de sarcoptiformes plumicoles.
Acarologia. 16:522–561.
Gaud J, Atyeo WT. 1979. Co-e´volution des acariens sarcoptiformes plumicoles et de leurs
hoˆ tes. Acarologia. 21:291–306.
Gaud J, Atyeo WT. 1996. Feather mites of the World (Acarina, Astigmata): the supraspecific
taxa. Ann Mus R Afr Centr, Sces Zool. 277:1–193 (Part 1); 277:1–436 (Part 2).
Gaud J, Mouchet J. 1959. Acariens plumicoles des oiseaux du Cameroun V. Pterolichidae (1re
Partie). Ann Parasitol. 33:493–545.
Gaud J, Till WM. 1961. Suborder Sarcoptiformes. Publ S Afr Inst med Res. 50:180–352.
Gould J. 1837. A synopsis of the birds of Australia, and the adjacent islands. Vol. I. London:
Gould. 11 p1.
Griffiths DA, Atyeo WT, Norton RA, Lynch CA. 1990. The idiosomal chaetotaxy of
astigmatid mites. J Zool. 220:1–32.
Haller G. 1882. Zur Kenntnis der Dermaleichiden. Archiv Naturgeschichte. 48:47–79.
Hull JE. 1934. Concerning British Analgidae (Feather-mites). Trans Northern Nat Un.
1:200–206.
Livezey BC, Zusi RL. 2007. Higher-order phylogeny of modern birds (Theropoda, Aves:
Neornithes) based on comparative anatomy. II. Analysis and discussion. Zool J Linn
Soc-Lond. 149:1–95.
Me´gnin P, Trouessart EL. 1884. Les Sarcoptides plumicoles. Re´vision du groupe des
Analgesinae, et description des especes et genres nouveaux de la collection du Muse´e
d’Angers. (Suite) (1). J Microsc. 8:331–338.
Mironov SV, Dabert J, Ehrnsberger R. 2005a. Six new feather mite species (Acari: Astigmata)
from the Carolina parakeet Conuropsis carolinensis (Psittaciformes: Psittacidae), an
extinct parrot of North America. J Nat Hist. 39:2257–2278.
Mironov SV, Dabert J, Ehrnsberger R. 2005b. A new species of the feather mite genus
Pterotrogus Gaud (Analgoidea: Pteronyssidae) from the ivory-billed woodpecker
Campephilus principalis L. (Aves: Piciformes). Ann Entomol Soc Am. 98:13–17.
Radford CD. 1953. The mites (Acarina: Analgesidae) living on or in the feathers of birds.
Parasitology. 42:199–216.
Radford CD. 1958. The host–parasite relationships of the feather mites (Acarina:
Analgesoidea). Rev Bras Biol. 8:107–170.
Shepherd LD, Lambert DM. 2007. The relationships and origins of the New Zealand
wattlebirds (Passeriformes, Callaeatidae) from DNA sequence analyses. Mol Phylogenet
Evol. 43:480–492.
Sibley CG, Ahlquist JE. 1990. Phylogeny and classification of the birds of the world: a study in
molecular evolution. New Haven (CT) & London (UK): Yale University Press.
Sibley CG, Monroe BL Jr. 1990. Distribution and taxonomy of birds of the world. New
Haven (CT) & London (UK): Yale University Press.
Trouessart EL. (1886) 1887. Diagnoses d’especes nouvelles de Sarcoptides plumicoles
(Analgesinae). Bull Soc etud Sci Angers. 16:85–156.
Vassiliev ID. 1959. Acari of the superfamily Analgesoidea in Bulgaria. Izv Bulg Akad Nauk,
Otdel Izv Miol Med Nauk. 3:7–16. Bulgarian.
2776 J. Dabert and G. Alberti
Downloaded By: [informa internal users] At: 09:49 16 December 2008
