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New Species of the Tenebrionid Beetle Genus Nalassus Muls. (Coleoptera, Tenebrionidae)

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  • Daghestan Federal Research Centre of the Russian Academy of Sciences

Abstract and Figures

Two new species of the tenebrionid beetle genus Nalassus, N. (Caucasonotus) svaneticus sp. n. and N. (Helopondrus) adzharicus sp. n., are described from the Caucasus (Georgia). One of the species of the genus Nalassus, described in the present paper, belongs to the endemic Caucasian subgenus Caucasonotus (Nabozhenko, 2000), whose representatives are distributed, with some exception, within the Great Caucasus. The other species belongs to the subgenus Helopondrus Reitter, whose range covers the Caucasus, N Iran, and the European part of the CIS; several species are known from Europe. Types of the described species are deposited at the Zoolo-gical Institute, Russian Academy of Sciences (St. Pe-tersburg), and part of type specimens, at the Institute of Zoology, Georgian Academy of Sciences (Tbilisi).
Content may be subject to copyright.
Entomological Review, Vol. 81, No. 3, 2001, pp. 284–288. Translated from Entomologicheskoe Obozrenie, Vol. 80, No. 1, 2001, pp. 90–95.
Original Russian Text Copyright © 2001 by Nabozhenko, Dzhambazishvili.
English Translation Copyright © 2001 by MAIK “Nauka/Interperiodica” (Russia).
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New Species of the Tenebrionid Beetle Genus Nalassus Muls.
(Coleoptera, Tenebrionidae)
M. V. Nabozhenko and M. Ya. Dzhambazishvili
Rostov State University, Rostov, Russia
Institute of Zoology, Georgian Academy of Sciences, Tbilisi, Georgia
Received October 25, 2000
Abstract—Two new species of the tenebrionid beetle genus Nalassus, N. (Caucasonotus) svaneticus sp. n. and
N. (Helopondrus) adzharicus sp. n., are described from the Caucasus (Georgia).
One of the species of the genus Nalassus, described
in the present paper, belongs to the endemic Caucasian
subgenus Caucasonotus (Nabozhenko, 2000), whose
representatives are distributed, with some exception,
within the Great Caucasus. The other species belongs
to the subgenus Helopondrus Reitter, whose range
covers the Caucasus, N Iran, and the European part of
the CIS; several species are known from Europe. Types
of the described species are deposited at the Zoolo-
gical Institute, Russian Academy of Sciences (St. Pe-
tersburg), and part of type specimens, at the Institute
of Zoology, Georgian Academy of Sciences (Tbilisi).
Nalassus (Caucasonotus) svaneticus Nabozhenko et
M. Dzhambazishvili, sp. n. (Figs. 1, 3–6)
Description. Male. Coloration. Body dark fuscous;
maxillary palps and tibiae pale fuscous, frequently
with reddish tint.
Head widest at the level of eyes. Outer margin of
clypeus straight. Genae strongly rounded before eyes,
protruding. Lateral margin of head with distinct ob-
tuse-angled emargination between outer angle of cly-
peus and apex of genal angle. Eyes weakly protruding.
Ratio of head width (outer margins of eyes) to distance
between eyes equal to 1.4. Temples roundly converg-
ing toward neck constriction. Punctation of head
coarse and dense, frequently confused along inner
margins of eyes. Entire surface of head covered with
short appressed golden hairs denser on sides of frons.
Antennae moderately long, their apices extending be-
yond base of pronotum. Middle antennal segments
thickened. Length to width ratio for 2nd–11th antennal
segments 1 : 2 : 1.25 : 1.25 : 1.5 : 1.3 : 1.35 : 1.1 : 1.1 :
1.15. Third antennal segment twice as long as 2nd
segment and 1.4 times as long as 4th. All segments
covered with appressed dark rufous hairs.
Pronotum (Fig. 1) wider than long (width to length
ratio 1.3–1.4), widest in the middle; lateral margins
moderately rounded, distinctly emarginate before
posterior angles. Base with 2 shallow emarginations;
posterior angles about 90°, distinct, not rounded; ante-
rior angles strongly protruding forwards, acute, taper-
ing apically. Lateral margins and base with wide mar-
gination (frequently indistinct in middle part of lateral
margins), margination very narrow only on sides of
base at posterior angles; anterior margin laterally with
very narrow margination obliterated medially. Disc
uniformly convex, not flattened laterally; punctation
very coarse, punctures large (with diameter exceeding
distance between punctures). Propleura covered
with short coarse vermiform irregular (not longitudi-
nal) rugae. Sides of propleura not flattened (in ventral
view).
Elytra longer than wide (length to width ratio 1.5),
2.2 times as long as pronotum. Intervals flattened;
punctures fused to form deep striae, only basal 1/4
with separate punctures. Intervals with moderately
dense punctation, 3 or 4 punctures across interval. Epi-
pleura with deep longitudinal depression in apical 1/3.
Lateral marginaton of elytra (upper margins of
epipleura) wide, visible along entire length in dorsal
view.
Underside of body glabrous; only anterior part of
mesosternum and prosternal process covered with
short appressed dark fuscous hairs. Mes- and metepis-
terna covered with large punctures denser on meso-
sternum. Abdominal sternites moderately densely
punctate, distance between punctures i-
ameter, punctures somewhat elongate laterally. Third
visible sternite with wide depression at lateral margin.
First and second (and, occasionally, third) visible ab-
dominal sternites covered with spots formed by long
NEW SPECIES OF THE TENEBRIONID BEETLE GENUS
ENTOMOLOGICAL REVIEW Vol. 81 No. 3 2001
2
85
sparse hairs; surface of sternites under spots shining,
covered with large sparse, strongly elongate punctures.
Fifth visible abdominal sternite narrowly marginate
laterally at apex.
Legs. Fore tarsus slightly widened, bearing dense
rufous hair brushes; middle and hind tarsi not wid-
ened.
Genitalia (Figs. 3, 4). Structure typical of the sub-
genus Caucasonotus: parameres stretched to form
compressed carina. Sclerites of penis wide, narrowly
rounded in apical part.
Female. Body larger than that in male, 11.5 mm
long. Antennae not thickened, considerably shorter
than those in male; their apices only extending to base
Figs. 1–6. Nalassus Muls., male: (1, 36) N. svaneticus sp. n. [(1) pronotum; (3, 4) aedeagus, ventral and lateral view; (5) spiculum
gastrale; (6) abdominal sternite VIII]; (2) N. adzharicus sp. n., pronotum.
NABOZHENKO, DZHAMBAZISHVILI
ENTOMOLOGICAL REVIEW Vol. 81 No. 3 2001
286
of pronotum. Segments of fore tarsus not widened.
Visible abdominal sternites without spots of hairs.
Material. Holotype (
Georgia: Lentekhskii District, Chikhareshi Vill.,
16.V.1978 (M.Ya. Dzhambazishvili); paratype (
labeled Caucasus. Hahu. 1898. The holotype and
part of paratypes are deposited at the Zoological In-
stitute, Russian Academy of Sciences (St. Petersburg);
the rest of paratypes, at the Institute of Zoology, Geor-
gian Academy of Sciences (Tbilisi).
Comparative diagnosis. This species is most clo-
sely related to an yet undescribed species of Nalassus
from NW Azerbaijan, differing from it in the larger
body, fuscous coloration, pale fuscous or reddish tib-
iae (in the latter species, the body and legs are tar-
black, or legs are occasionally dark fuscous), noticeab-
ly denser and coarser punctation of the pronotum and
head, and appressed golden hairs covering the entire
head surface.
Nalassus (Helopondrus) adzharicus Nabozhenko
et M. Dzhambazishvili, sp. n. (Figs. 2, 711)
Description. Male. Coloration. Body tar-black,
shining; tarsi, maxillary palps, and antennae dark
fuscous.
Head widest at the level of eyes. Eyes convex,
widely separate; ratio of distance between outer mar-
gins of eyes to that between their inner margins 1.5.
Temples strongly rounded behind eyes (in dorsal
view). Genae rounded before eyes, markedly beveled
inwards. Lateral margin of head straight, without an-
gular emargination between outer angle of clypeus and
apex of genal angle. Frons uniformly weakly convex;
rather shallow transverse depression present at junc-
tion of frons and clypeus. Anterior margin of clypeus
straight. Punctation of head dense and coarse; punctu-
re diameter mostly equal to distance between punctur-
es. Punctures on sides of frons elongate, frequently
fused. Labrum punctate, covered with pale golden
hairs. Mandibles dark fuscous, black apically. Anten-
Figs. 710. Nalassus adzharicus sp. n., male: (7, 8) aedeagus, ventral and lateral view; (9) spiculum gastrale; (10) abdominal sternite
VIII.
NEW SPECIES OF THE TENEBRIONID BEETLE GENUS
ENTOMOLOGICAL REVIEW Vol. 81 No. 3 2001
2
87
nae long; their 2 apical segments extending beyond
base of pronotum. Length to width ratio for 2nd11th
antennal segments 1 : 2.36 : 1.6 : 1.5 : 1.6 : 1.6 : 1.4 : 1.25 :
1.2 : 1.6. Third segment strongly elongate, 2.4 times as
long as 2nd segment and 1.4 times as long as 4th. All
antennal segments covered with dark golden hairs.
Pronotum (Fig. 2) 1.41.5 times as wide as long,
widest in the middle, 1.6 times as wide as head in its
widest part. Sides moderately rounded, distinctly
emarginate at posterior angles. Anterior angles acute,
strongly protruding forwards, tapering apically; poste-
rior angles about 90°, shortly rounded apically. Base
Fig. 11. Nalassus adzharicus sp. n., genital tubes of female: (1) spermathecal gland, (2) spermatheca, (3) bursa copulatrix, (4) median
oviduct, (5) vagina.
NABOZHENKO, DZHAMBAZISHVILI
ENTOMOLOGICAL REVIEW Vol. 81 No. 3 2001
288
with 2 hardly noticeable emarginations. Entire pe-
rimeter of pronotum with margination wider on base
and sides at posterior angles. Margination of anterior
margin occasionally obliterated medially. Disc uni-
formly convex over entire surface, not flattened later-
ally (2 rather shallow depressions occasionally present
lateral to disc center). Punctation coarse, denser later-
ally (puncture diameter mostly equal to distance be-
tween punctures) and sparser at disc center; punctures
along midline oblong-oval. Propleura narrowly flat-
tened along lateral margin, covered with coarse longi-
tudinal rugae. Prosternal process somewhat convex,
covered with short pale hairs.
Elytra oblong-oval (1.5 times as long as wide), 2.7
times as long as pronotum. Intervals convex, rather
coarsely punctate. Punctures in rows forming deep, in
places interrupted striae. Suture finely marginate api-
cally. Epipleura smooth, without deep basal depres-
sion.
Underside of body. Metepisterna densely covered
with coarse oval punctures; punctation of mesoster-
num moderately coarse and sparse. Abdominal ster-
nites finely densely punctate, finely striate on sides.
Central part of first visible abdominal sternite with
fine, very dense punctation and spot of dense, pale
yellow hairs; 2nd visible sternite covered with separate
hairs forming no spots; 5th visible sternite entirely
marginate at apex.
Legs. Fore tibia slightly curved; middle and hind
tibiae straight. Fore tarsus weakly widened, its 2nd
and 3rd segments wider than long.
Body length 7.58.5 mm.
Genitalia (Figs. 710). Parameres short, weakly
sclerotized, flattened apically. Penis in the form of
oblong bifurcate tube, its apical part extending to basal
third of parameres.
Female differing from male in the following char-
acters: body on the average larger, 8.59.5 mm long;
antennae shorter; elytral intervals usually flat or very
weakly convex, 1st visible abdominal sternite without
hairy spot.
Genital tubes (Fig. 11). Structure typical of the
subgenus Helopondrus. Spermatheca with numerous
lateral processes arranged along entire length but more
distinct at base. Gland rather short, not longer than
spermatheca.
Material. Holotype (
and 59
Taginauri Mt., 28.VI.2000 (M.V. Nabozhenko). The
holotype and most of paratypes are deposited at the
Zoological Institute, Russian Academy of Sciences
(St. Petersburg); part of paratypes, in the collection of
Zoological Museum, Rostov State University (Ros-
tov); and 5 paratypes, at the Institute of Zoology,
Georgian Academy of Sciences (Tbilisi).
Habitat. The species was collected in the alpine
belt at altitude of 22002500 m from dry, steppefied,
usually rocky areas, where the beetles formed small
aggregations.
REFERENCES
1. Nabozhenko, M.V., New Species of the Tenebrionid
Beetle Genus Cylindronotus Fald. (Coleoptera, Tene-
brionidae) from the North Caucasus, Entom. Obozr.,
2000, vol. 79, no. 3, pp. 114118, English transl.:
Entomol. Rev., 2000, vol. 80, no. 1, pp. 5053.
... Species of the genus Nalassus are widespread in the Palaearctic from the Atlantic to the Pacific. Most diversity of the genus is observed in the Western Palaearctic, especially in the Mediterranean (Antoine 1949, Ardoin 1958, Español 1961, Nabozhenko and Löbl 2008, on the Caucasus (Nabozhenko 2000, 2001, 2008a, 2013b, Nabozhenko and Dzhambazishvili 2001, Nabozhenko and Abdurakhmanov 2007, Abdurakhmanov and Nabozhenko 2011, in Iran and Turkmenistan (Medvedev 1987, 1999, Nabozhenko 2006, 2010, 2014. Isolated generic enclave is located in the South-Eastern Kazakhstan and Western China (Tarbagatai) (Medvedev 1987, Nabozhenko 2012, Pacific region (Russian Far East, Korean Peninsula, Eastern China and Japan (Nabozhenko 2012, Nabozhenko andIvanov 2015). ...
... The second species was found in Artvin Province. Nalassus adzharicus Nabozhenko et Dzhambazishvili, 2001 was described from Southern Georgia (Adjara, alpine zone of Meskhet Ridge) and found in contiguous regions of Turkey. The remaining two species, N. schmalfussi (Fig. 2C) and N. szalooki are rare, locally distributed beetles described from Van and Bitlis Provinces (Nabozhenko 2011). ...
Article
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A brief review of the genus Nalassus Mulsant, 1854 of Turkey is given. The new genus Turkonalassus gen. nov. (type species Helops adimonius Allard, 1876) is described. Species of the newly described genus are superficially similar to representatives of the subgenus Pelorinus of Probaticus (subtribe Helopina), but belong to the subtribe Cylindrinotina and are close to the genus Nalassus from which they differ by the absence of temple grooves ventrally (lower aspect of eye without ventral groove). The following species are included in Turkonalassus: Turkonalassus adimonius (Allard, 1876) (from Probaticus), Turkonalassus pentheri (Reitter, 1905), comb. nov. (from Probaticus), Turkonalassus bozdagus Keskin et Nabozhenko, 2010, comb. nov. (from Nalassus), Turkonalassus pineus sp. nov., Turkonalassus quercanus sp. nov., Turkonalassus petrophilus sp. nov., Turkonalassus macedonicus sp. nov. The last species is described from Greece and Bulgaria, the other species are known from Turkey. A new synonymy is established: Nalassus Mulsant, 1854 = Helopocerodes Reitter, 1922, syn. nov.; Turkonalassus pentheri = Cylindronotus hoberlandtii Kaszab, 1959, syn. nov. Lectotype of Helops pentheri Reitter, 1905 is designated. A key to the species of the genus Turkonalassus and genus Nalassus from Turkey is given.
... The genus Nalassus Mulsant, 1854 is well studied on the Caucasus [Nabozhenko, 2000[Nabozhenko, , 2001[Nabozhenko, , 2005Nabozhenko, Dzhambazishvili, 2001;Nabozhenko, Abdurakhmanov, 2007;Abdurakhmanov, Nabozhenko, 2011]. Twenty two species of four subgenera are known from the region to the present time. ...
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.Two new taxa of the genus Nalassus Mulsant, 1854 of the subgenus Caucasonotus Nabozhenko, 2000 are described from Georgia: N. kartvelius sp. n. from Racha-Lechkhumi and Kvemo Svaneti Region (Oni District) and N. colchicus madlenae subsp. n. from Imereti Region (Tkibuli District). First species is very close to N. svaneticus Nabozhenko et Dzhambazishvili, 2001 but differs from it by fine setation of all abdominal ventrites, not dorsally pubescent head and not rimmed 5th abdominal ventrite on apex. N. colchicus madlenae subsp. n. differs from the nominative subspecies by distinct moderately coarse punctation of elytra, more coarse and dense punctation of pronotum, very thickened border of pronotum, brush of 3–4 setae on first trochanter.
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New species of the genus Nalassus (tribe Helopini) are described from the Caucasus, Crimea and Turkey: N. kaszabi, N. dissonus, N. lutshniki, N. romashovi, N. kalashiani, N. abkhasicus, N. zakatalensis, N. ludmilae, N. colchicus, N. arcanus spp. n. New synonymy is established: Odocnemis Allard, 1876 = Omaleis Allard, 1877; Nalassus brevicollis (Krynicky, 1832) = Helops gilvipes Ménétriés, 1848; Nalassus faldermanni (Faldermann, 1837) = Cylindronotus ambrosius Reitter, 1922 = Cylindronotus eligius Reitter, 1922; Nalassus lineatus(Allard, 1877) = Stenomax vexator Reitter, 1887. The ranges of all genera and subgenera discussed in the paper are described
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Two new species of the genus Cylindronotus Fald. from the North Caucasus are described: C. dom-baicus sp. n. from Karachai-Cherkess Republic and C. alanicus sp. n. from North Ossetia. A new subgenus, Cau-casonotus subgen. n. (type species Cylindronotus dombaicus sp. n.), is erected to include the two new species in addition to C. diteras All. and C. adriani Rtt. The paper presents descriptions of two new species of the genus Cylindronotus: C. dombaicus sp. n. and C. alanicus sp. n. from Karachai-Cherkess Republic and North Ossetia. The species are placed in the new subgenus Caucasonotus subgen. n., in addition to C. alanicus Rtt. and C. diteras All. previously assigned by Reitter (1922) to the subgenus Nalassus. The holotypes and part of paratypes are deposited at the Zoological Institute, Russian Academy of Sciences, St. Petersburg; the rest of types, in the Zoological Mu-seum, Faculty of Zoology, Rostov State University, Rostov-on-Don.
Tenebrionidae) from the North Caucasus
  • M V Nabozhenko
Nabozhenko, M.V., New Species of the Tenebrionid Beetle Genus Cylindronotus Fald. (Coleoptera, Tenebrionidae) from the North Caucasus, Entom. Obozr., 2000, vol. 79, no. 3, pp. 114-118, English transl.: Entomol. Rev., 2000, vol. 80, no. 1, pp. 50-53.