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ZOOTAXA
ISSN 1175-5326 (print edition)
ISSN 1175-5334 (online edition)
Accepted by J. Botero: 9 Feb. 2021; published: 5 Mar. 2021 91
Zootaxa 4941 (1): 091–100
https://www.mapress.com/j/zt/
Copyright © 2021 Magnolia Press Article
https://doi.org/10.11646/zootaxa.4941.1.5
http://zoobank.org/urn:lsid:zoobank.org:pub:612ABE96-0443-4F57-80F6-4A644F1F66CD
New species and subspecies of Laoechinophorus from China and Thailand
(Coleoptera, Cerambycidae, Lamiinae, Morimopsini)
JUNSUKE YAMASAKO1*, EDUARD VIVES2 & BIN LIU3
1Institute for Agro-Environmental Sciences, NARO, Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
2Museu de Ciències Naturals de Barcelona, (Entomologia). Passeig Picasso, s/n. E- 08003, Barcelona Spain
�
eduard_vives@hotmail.com; https://orcid.org/0000-0001-5980-7018
3Bin Insect Taxonomy Studio, No.16, Xizhaosi Street, Dongcheng District, Beijing 100061, China
�
BinLiu_82@163.com; https://orcid.org/0000-0003-2191-850X
*Corresponding author.
�
mesoxxmesosa@hotmail.com; https://orcid.org/0000-0001-9989-4187
Abstract
Two new species with a new subspecies of the genus Laoechinophorus Gouverneur, 2016 are described: L. thailandicus
thailandicus ssp. nov. and L. thailandicus tsuyukii ssp. nov. from Thailand, and L. yunnanus sp. nov. from China. A
description of male genitalia of the type species, L. unifasciatus Gouverneur, 2016, from Laos, and a key to the species
of the genus are provided.
Key words: Asia, entomology, flightless longicorn beetles, taxonomy
Introduction
The genus Laoechinophorus was established by Gouverneur (2016) for a single species, Laoechinophorus unifas-
ciatus Gouverneur, 2016 from Laos. Since then, the genus had been monotypic and known only from its type local-
ity, the northeastern mountainous area of Laos: Phou Pan (Mt.), Houa Phan Prov. However, we have found several
specimens of the genus from China and Thailand in our own collections. After careful examination, two new spe-
cies for the science were recognized among those specimens, and thus, we describe them hereinafter. Furthermore,
in this opportunity, we provide an additional description and measurements for some features of the type species,
including figured male genitalia.
Material and methods
This study was based on dried specimens preserved in the following collections.
BITS Bin Insect Taxonomy Studio, Beijing, China
EUMJ Ehime University Museum, Matsuyama, Japan
PCJY Private collection of Junsuke Yamasako, Tsukuba, Japan
The observational method, terminology, and abbreviations of the endophallus in inflated condition without
eversion mainly followed Yamasako & Ohbayashi (2011) (partly modified by Yamasako & Lin 2018).
The abbreviations for endophallic structures used in the present paper are as follows: APH—apical phallomere;
BPH—basal phallomere; CS—crescent shaped sclerites; CT—central trunk; ED—ejaculatory duct; LSp—large
spicules; MPH—median phallomere; MSp—micro spicules; MT—medial tube; PB—pre-apical bulb; SSp—small
spicules.
Measurements of various body parts are coded as follows: BL—body length from tip of vertex to apex of ely-
YAMASAKO ET AL.
92 · Zootaxa 4941 (1) © 2021 Magnolia Press
tra; BW—maximum width of body; PL—pronotal length along the mid-line; PW—maximum width of pronotum;
EL—elytral length along suture; EHW—elytral width across humeri; GL—genal length; LED—maximum depth of
lower eye lobe; LEW—maximum width of lower eye lobe.
The number of measured specimens is shown in parentheses at the beginning of the description for each sex.
Taxonomy
Laoechinophorus Gouverneur, 2016
Laoechinophorus Gouverneur, 2016: 26. Type species: Laoechinophorus unifasciatus Gouverneur, 2016.
Diagnosis. Body rounded, relatively small (5.3–8.4 mm), with dense and long setae on dorsal surface; scape clavate,
without cicatrix; pedicel relatively long, 0.2–0.3 times as long as scape; antennomere IV the longest; pronotum
swollen laterally near middle, with antlers-like protuberances on disk and spinous projections on latero-dorsal sides;
each elytron with spinous protuberances behind base and longitudinal ridge followed to the protuberances; hind
wing degenerated; mesoventrite short; mesocoxal cavity opened laterally; femora strongly clavate; mesotibiae with
distal notch; claws divaricated.
Remarks. The genus Laoechinophorus was originally established based on a strict sense due to monotypy and
defined with detailed features by Gouverneur (2016). Some features of those definitive characteristics of the genus
(e.g. the detailed characteristics of punctures and hairs, ratio of parts, etc.) unfit for the present new taxa, and thus
the definition needs to be revised partly. For tentatively modifying the definition, the features above would be useful
for simply diagnosing of the genus in a sensu novo.
1. Laoechinophorus unifasciatus Gouverneur, 2016
(Figs 1, 5, 9, 13)
Laoechinophorus unifasciatus Gouverneur, 2016: 28.
Type locality. Phou Pan (Mt.), Alt. 1,300–1,900 m, Ban Saleui, Houa Phan, Laos.
Specimens examined. 2♂♂, Phou Pan (Mt.), Alt. 1,500–1,700 m, Ban Saleui, Houa Phan Prov., Laos,
11.IV.2004, M. Hasegawa leg. (PCJY); 4♂♂, same locality but Alt. 1,400–1,500 m, 27.VI–11.V.2007, J. Yamasako
leg. (PCJY).
Measurements. Male (n = 6): BL = 6.3–8.4 mm, BW = 2.4–3.2 mm. Antennae 1.6–1.7 times as long as body
length; relative length of each antennomere, from scape to antennomere XI, as follows: 1.1 : 0.3 : 1.3 : 1.5 : 1.1–1.2
: 0.9–1.0 : 0.8–0.9 : 0.7–0.8 : 0.7–0.8 : 0.7 : 0.7. Relative ratio of body parts as follows: LED/LEW = 0.8, LED/GL
= 0.8–0.9, PL/PW = 0.9–1.0, PW/EHW = 0.9–1.0, EL/BL = 0.6, EL/EHW = 1.8–2.0.
Male genitalia (Fig. 13). Tegmen in dorsal view rhombic, widest at middle, slightly curved in lateral view;
parameres thick in ventral view, slightly narrowed toward roundly projected apex, with several long setae arising
on apical 1/4 and concentrated apically, with short setae on basal ridge of ventral side; ring part expanded at middle
of tegmen, thence arcuately narrowed basally. Median lobe thick in dorsal view, slightly curved in lateral view;
ventral plate distinctly longer than dorsal plate, acutely pointed at apex; dorsal plate with apex rounded; basal strut
bifurcated before middle of median lobe. Endophallus subdivided into BPH, MPH (MT+CT, PB), and APH; BPH
slightly shorter than median lobe, with well swollen basal swelling on ventral side near CS; MPH with almost fused
MT+CT long, 1.5 times as long as median lobe, thick, cylindrical, weakly curved in distal 1/3, thence constricted
distally, with LSp unidentate and irregularly arranged lineally in latero-dorsal sides of CT; PB dilated distally, with
SSp minute and densely covered almost of PB; APH roundly swollen ventrally, with a single ED distally on dorsal
side.
Remarks. The hind wing of this species (Fig. 9b) is degenerated but less than in the other congeners, and veined
with C, SC, RA with r, MP1+2 with RP and MS, AA+Cu with CuA and MP3+4.
NEW SPECIES AND SUBSPECIES OF LAOECHINOPHORUS Zootaxa 4941 (1) © 2021 Magnolia Press · 93
2. Laoechinophorus thailandicus sp. nov.
This new species is subdivided into the following two subspecies.
2-1. Laoechinophorus thailandicus thailandicus ssp. nov.
(Figs 2, 6, 10, 14)
Type locality. Doi Inthanon (Mt.), Chiang Mai, Thailand.
Type series. Holotype (EUMJ): ♂, “Thailand, Chiang Mai / Doi Inthanon N.P. / Y. Asseluck leg.”, “8–15-XI-
2006” (handwritten on reverse side).
Description. Male (Figs 2, 6, 10; n = 1): BL = 5.5 mm, BW = 1.9 mm.
Head dark brown, with light and dark-brown pubescence, with oval spots of black pubescence on vertex, be-
tween antennal tubercles. Antennomeres with light-brown pubescence throughout; scape brown apically; apical half
of VII and mostly of VII–XI dark brown. Pronotum brown, with light-brown pubescence. Each elytron with light-
brown and brown pubescence, scattered with small black spots with black bristles, provided with dark-brown vitta
arcuately extended from humerus to middle, with dark-brown indistinct band obliquely extended from lateral side
behind middle to apical 1/3. Legs with femora, tibiae, and tarsomeres darkened apically.
Head with a few distinct punctures on frons. Eye with upper and lower lobes connected by 2–3 rows of om-
matidia; lower lobe transverse, LED/LEW = 0.8, LED/GL = 0.8.
Antennae 1.7 times as long as body length; relative length of each antennomere, from scape to antennomere XI,
as follows: 1.0 : 0.2 : 1.3 : 1.6 : 1.2 : 1.0 : 0.9 : 0.8 : 0.7 : 0.7 : 0.7.
Pronotum cylindrical, PL/PW = 1.0, PW/EHW = 0.9, with rough dense small punctures which are shallow and
somewhat indistinct in apical half and well distinct in basal half; disk with an inverted triangular swelling projected
posteriorly before middle, a pair of small spinous tubercles latero-dorsal side near middle, a pair of antler-like
protuberances behind middle, the protuberance branched at base into short anterior process and long posterior one;
sides constricted at apical 1/3, slightly swollen laterally in middle, then paralleled in basal 1/4. Scutellum semicircle
in shape.
Each elytron elongate, EL/BL = 0.6, EL/EHW = 2.0, with a few deep punctures on base, roundly depressed on
latero-dorsal side behind base (= area between basal protuberances and lateral side), thence convex above; sides
slightly expanded laterally toward middle and arcuately narrowed apically, with angular apex; disk with several
small tubercles on base and humerus, two spinous protuberances behind base near middle, of which anterior one is
larger than the posterior one, with longitudinal ridge behind the posterior protuberance to apical 1/3, with several
spinous tubercles on the ridge, and two faint ridges on latero-dorsal side, with tufts of short black bristles on each
tubercle of the ridges and sparsely with the same bristles along suture. Hind wing (Fig. 10b) highly degenerate,
elongate, with sclerotized vein corresponded MP1+2 on middle, and reduced C+SC and indistinct RA on basal area.
Male genitalia (Fig. 14) with parameres thick in ventral view, slightly narrowed toward rounded apex, with sev-
eral long setae arising from apical 1/5 and concentrated apically, with few short setae on base of ventral side. Median
lobe slender in dorsal view, slightly curved in lateral view; ventral plate distinctly longer than dorsal plate, acutely
pointed at apex; dorsal plate with pointed apex; basal strut bifurcated from basal 1/3 of median lobe. Endophallus
with BPH subequal in length of median lobe.
Remarks. The holotype is probably a teneral individual because the lighter coloration and the male genitalia
less sclerotized.
Etymology. The specific name is derived from the country name of the type locality.
2-2. Laoechinophorus thailandicus tsuyukii ssp. nov.
(Figs 3, 7, 11, 15)
Type locality. Doi Pui (Mt.), Chiang Mai, Thailand.
Type series. Holotype (EUMJ): ♂, “Doi Pui / Chiang Mai / THAILAND / 4 V 1980 / S. TSUYUKI leg.”. Para-
type: 1♀ (PCJY), “Meo Village, near Chieng Mai”, Thailand, 5.V.1980, A. Yasuda leg.
YAMASAKO ET AL.
94 · Zootaxa 4941 (1) © 2021 Magnolia Press
Description. Male (Figs 3, 7, 11; n = 1): BL = 5.3 mm, BW = 2.0 mm.
Very similar to the nominotypical subspecies and share most of its characteristics, but differs by the following
features: body somewhat thicker and dark reddish brown color; antennae 1.7 times as long as body length; relative
length of each antennomere, from scape to antennomere XI, as follows: 1.1 : 0.2 : 1.2 : 1.6 : 1.1 : 1.0 : 0.9 : 0.8 : 0.7
: 0.7 : 0.7.
FIGURES 1–4. Male habitus of Laoechinophorus spp. 1, Laoechinophorus unifasciatus; 2, L. thailandicus thailandicus ssp.
nov. (holotype); 3, L. thailandicus tsuyukii ssp. nov. (holotype); 4, L. yunnanus sp. nov. (holotype). a, Dorsal view; b, lateral
view.
NEW SPECIES AND SUBSPECIES OF LAOECHINOPHORUS Zootaxa 4941 (1) © 2021 Magnolia Press · 95
Elytra with two obtuse protuberances and longitudinal ridge without spinous tubercles; relative length of each
body parts as follows: LED/LEW = 0.8, LED/GL = 0.9, PL/PW = 1.1, PW/EHW = 0.9, EL/BL = 0.6, EL/EHW =
2.0. Hind wing (Fig. 11b) well degenerate, but slightly less reduced than the nominotypical subspecies, with lightly
sclerotized veins corresponded with C, SC, RA, MP1+2, and AA+Cu. Mesocoxal cavity very narrowly opened later-
ally.
Male genitalia (Fig. 15) with tegmen, in dorsal view, wide rhombic, widest at middle, slightly curved in lateral
view; parameres, in ventral view, slightly narrowed toward rounded apex, with several long setae on apical 1/5 and
concentrated apically, with short setae on base of ventral side; ring part expanded laterally at middle of tegmen,
thence arcuately narrowed basally. Median lobe slender in dorsal view, slightly curved in lateral view; ventral plate
distinctly longer than dorsal plate, acutely pointed at apex; dorsal plate with obtusely pointed apex; basal strut bi-
furcated from basal 1/3 of median lobe. Endophallus 1.7 times as long as median lobe, subdivided into BPH, MPH
(MT, CT, PB), and APH; BPH slightly longer than half length of median lobe, with indistinct basal swelling on ven-
tral side near CS; MPH with MT+CT slightly shorter than median lobe, cylindrical in MT, constricted and curved in
proximal area of CT, slightly dilated distally, projected latero-ventrally in distal area of CT, with LSp unidentate and
irregularly arranged on latero-dorsal sides of CT; PB dilated distally, with SSp minute and densely covered almost
of PB; APH well swollen in pear shape, with a single ED distally on dorsal side.
FIGURES 5–8. Male habitus of Laoechinophorus spp. 5, Laoechinophorus unifasciatus; 6, L. thailandicus thailandicus ssp.
nov. (holotype); 7, L. thailandicus tsuyukii ssp. nov. (holotype); 8, L. yunnanus sp. nov. (holotype). a, Protuberances on prono-
tum and tubercles on elytra; b, mesocoxal cavity.
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Female (n = 1): BL = 6.2 mm, BW = 2.3 mm. Similar to male, but slightly rounded. Antennae 1.5 times as long
as body length; relative length of each antennomere, from scape to antennomere XI, as follows: 1.1 : 0.2 : 1.3 : 1.6 :
1.2 : 1.0 : 0.9 : 0.7 : 0.7 : 0.6 : 0.7; relative ratio of body parts as follows: LED/LEW = 0.9, LED/GL = 0.8, PL/PW
= 1.0, PW/EHW = 0.9, EL/BL = 0.6, EL/EHW = 2.1.
Etymology. The subspecific name is cordially dedicated to Shigeo Tsuyuki (Zushi, Japan), who is the collector
of the holotype and kindly assists the first author on cerambycid study.
3. Laoechinophorus yunnanus sp. nov.
(Figs 4, 8, 12, 16)
Type locality. Ailao-shan (Mt.), Alt. 2,299 m, 23°56′13.73′′N / 101°29′4.98′′E, Heping Township, Zhenyuan Coun-
ty, Pu’er City, Yunnan, China.
Type series. Holotype (tentatively in BITS, but will be in China Agricultural University, Beijing, China): ♂,
“[CHINA: Yunnan] Ailao-shan (Mt.), / Heping Township, Zhenyuan / County, Pu'er City, Alt. 2,299 m, / 23°56'13
.73"N/101°29'4.98"E /云南省普洱市镇远县和平乡哀牢山/ 26.IX.2017, Coll. Yinghui Li”. Paratypes: 7♂♂3♀♀
(BITS), same data as the holotype.
Description. Male (Figs 4, 8, 12; n = 7): BL = 6.4–8.3 mm, BW = 2.5–3.2 mm.
Body dark brown, with brown pubescence mingled with light-brown pubescence in dominant part. Head in-
termixed with yellowish pubescence partly and surrounding eyes, with a pair of round small black pubescent spots
on vertex between antennal tubercles. Pronotum with yellowish pubescence on lateral tubercles, with small spot of
same pubescence on suture behind apex and before base, with a pair of transverse narrow bands of black pubescence
on apical 1/3. Scutellum with yellowish pubescent margin. Each elytron with dark-brown vitta obliquely extended
apically from humerus toward middle and from suture near middle toward apical 3/5 of lateral side, with large in-
distinct maculae of yellowish pubescence on lateral side behind humerus. Body intermixing sparse long light-brown
setae on head, pronotum, elytra and legs. Same setae somewhat sparsely on scape, and densely on pedicel, anten-
nomere III, and underside of IV–VII. Elytra with tufts of short black bristles on each tooth of the ridges and sparsely
with the same bristles along suture and lateral margin.
Head with several deep punctures on frons and occiput. Eye with upper and lower lobes connected by 1–3 rows
of ommatidia; lower lobe transverse, LED/LEW = 0.7–0.8, LED/GL = 0.9–1.0.
Antennae 1.6 times as long as body length; relative length of each antennomere, from scape to antennomere XI,
as follows: 1.0–1.1 : 0.2–0.3 : 1.3 : 1.5 : 1.1–1.2 : 1.0 : 0.9 : 0.8 : 0.7 : 0.7 : 0.7.
Pronotum slightly wider than long, PL/PW = 0.9, PW/EHW = 1.0–1.1, with rough dense distinct small punc-
tures throughout; disk with indistinct transversal swelling anterior to middle, a pair of spinous tubercles latero-dor-
sally on middle, a pair of antler-like protuberances on center, the protuberance branched at base into short anterior
process and long posterior one; sides constricted behind apex, swollen laterally in middle, almost parallel in basal
1/4. Scutellum square in shape.
Each elytron relatively short, EL/BL = 0.6, EL/EHW = 2.0–2.3, with deep punctures on base and becoming
indistinct apically; sides slightly expanded laterally toward middle and arcuately narrowed apically, with angularly
pointed apex; disk roundly depressed on latero-dorsal side behind base (= area between basal protuberances and
lateral side), thence convex dorsally with several small spinous tubercles on base and humerus, two protuberances
behind base near middle, of which the anterior one is small but the posterior one is well developed, serrate longitu-
dinal ridge from behind the protuberance to apical 1/5, and two indistinct serrate ridge on latero-dorsal side,
Mesocoxal cavity narrowly opened laterally.
Hind wing (Fig. 12b) well degenerated, without distinct veins except for upper one (probably corresponded
with C+Sc+RA).
Male genitalia (Fig. 16) with tegmen, in dorsal view, widest at middle, slightly curved in lateral view; parameres
slender, slightly curved in ventral view, obtusely projected at base of ventral side and depressed behind the projec-
tion, arcuately narrowed apically; each lobe slightly expanded toward rounded apex, with several long setae arising
from apical half of outer side and concentrated apically, with short setae on basal projection of ventral side; ring part
expanded at middle of tegmen, thence arcuately narrowed basally. Median lobe gently constricted behind middle
in dorsal view, gently curved in lateral view; ventral plate slightly longer than dorsal plate, acutely pointed at apex;
NEW SPECIES AND SUBSPECIES OF LAOECHINOPHORUS Zootaxa 4941 (1) © 2021 Magnolia Press · 97
dorsal plate with spear shaped apex; basal strut bifurcated from basal 2/5 of median lobe. Endophallus 2.5 times as
long as median lobe, subdivided into BPH, MPH (MT, CT, PB), and APH; BPH slightly longer than median lobe,
with basal swelling on ventral side near CS; MPH with MT+CT short, nearly half length of median lobe, cylindrical
in MT, weakly constricted and curved at proximal area of CT, slightly dilated distally, projected ventrally in distal
area of CT, with LSp unidentate and irregularly arranged lineally on lateral sides of CT; PB dilated distally, with
SSp minute and densely covered almost of PB; APH small, almost fused with PB, roundly swollen together with
PB, with a single ED distally on dorsal side.
Female (n = 3): BL = 6.1–8.0 mm, BW = 2.3–3.2 mm. Similar to male, but slightly rotund. Antennae 1.5–1.6
times as long as body length; relative length of each antennomere, from scape to antennomere XI, as follows:
1.1–1.2 : 0.2–0.3 : 1.1–1.2 : 1.6 : 1.2 : 0.9–1.0 : 0.8–0.9 : 0.8 : 0.7–0.8 : 0.6–0.7 : 0.6–0.7; relative ratio of body parts
as follows: LED/LEW = 0.7–0.8, LED/GL = 0.8–0.9, PL/PW = 0.8, PW/EHW = 1.0–1.1, EL/BL = 0.6, EL/EHW
= 2.1–2.3.
Etymology. The specific name is derived from the province name of the type locality.
FIGURES 9–12. Male habitus of Laoechinophorus spp. 9, Laoechinophorus unifasciatus; 10, L. thailandicus thailandicus ssp.
nov. (holotype); 11, L. thailandicus tsuyukii ssp. nov. (holotype); 12, L. yunnanus sp. nov. (holotype). a, Head in frontal view;
b, hind wing. Scale: 1.0 mm for hind wings.
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FIGURES 13–16. Male genitalia of Laoechinophorus spp. 13, Laoechinophorus unifasciatus; 14, L. thailandicus thailandicus
ssp. nov. (holotype); 15, L. thailandicus tsuyukii ssp. nov. (holotype); 16, L. yunnanus sp. nov. (holotype). a, b, Tegmen; c,
parameres; d, h, median lobe; e, apex of median lobe; f, g, median lobe with endophallus. a, d, g, Dorsal view; b, f, h, lateral
view; c, e, ventral view. Scale: 1.0 mm. Abbreviations: APH—apical phallomere; BPH—basal phallomere; CT—central trunk;
MT—medial tube; PB—pre-apical bulb.
NEW SPECIES AND SUBSPECIES OF LAOECHINOPHORUS Zootaxa 4941 (1) © 2021 Magnolia Press · 99
Key to the species of Laoechinophorus
1 Body relatively wide (BL/BW <2.7). Pronotal disk with fine and distinct punctures on disk. . . . . . . . . . . . . . . . . . . . . . . . . . . 2
- Body relatively slender (BL/BW ≧ 2.7). Pronotal disk with punctures distinct in basal half but shallow and somewhat indistinct
in apical half. (Thailand: Chiang Mai) ..................................................................... 3
2 Each elytron subquadrate or obtuse at apex. Hind wing degenerated but less reduced, with well sclerotized veins. Male genitalia
with parameres thick and short, slightly narrowed apically; endophallus with BPH distinctly shorter than median lobe; MT+CT
ca. 1.5 times as long as median lobe. (Laos: Houa Phan) . . . . . . . . . . . . . . . . Laoechinophorus unifasciatus Gouverneur, 2016
- Each elytron angularly pointed at apex. Hind wing highly degenerate, without distinct veins except for upper one. Male geni-
talia with parameres slender, slightly curved in ventral view; endophallus with BPH longer than median lobe; MT+CT nearly
half length of median lobe. (China: Yunnan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Laoechinophorus yunnanus sp. nov.
3 Elytron with several spinous tubercles on longitudinal ridge behind protuberances. (Thailand: Doi Inthanon) ..............
..........................................................Laoechinophorus thailandicus thailandicus ssp. nov.
- Elytron without spinous tubercles on ridge. (Thailand: Doi Pui) .................................................
............................................................. Laoechinophorus thailandicus tsuyukii ssp. nov.
Discussion
With the results of this study, the genus Laoechinophorus is now composed of three species with a subspecies dis-
tributed in the northern part of Indochina region and Yunnan, China. Among them, L. unifasciatus and L. yunnanus
sp. nov. are quite similar superficially to each other. Despite the external similarity of them, the degree of hind wing
degeneration and the shape of the male genitalia especially the parameres and endophallus are distinctly different
from each other as mentioned in the key and descriptions. On the other hand, L. thailandicus sp. nov. is different
from them in the general appearance with slender body and the shape and degenerative degree of hind wings, but
shares the shape of parameres with L. unifasciatus meanwhile shares the shape of endophallus with L. yunnanus
sp. nov. Although the relationships of those three species are unclear at this point, those similarities and differences
suggest that they are surely congeneric but well differentiated allopatrically. In fact, all taxa of the genus have been
found only from each type locality. Furthermore, even in close locality, L. thailandicus sp. nov. are distinguish-
able into two subspecies. Considering their allopatric differentiations and distributional gaps, more new taxa are
expected in the northern part of Indochina region and the southwestern part of China especially in mountainous area
as well as the known species.
According to Gouverneur (2016), this genus is distinctly different from the other members of the tribe Morim-
opsini Lacordaire, 1869 from Southeast Asia, but he tentatively put it into the polyphyletic flightless tribe due to the
characteristics according to the definition of the tribe, i.e. scape without cicatrix and mesoventrite shortened due to
flightless habitus. The systematic position of this genus is still unclear. Interestingly, however, this genus seemingly
resembles the genus Trichohoplorana Breuning, 1961 of the tribe Acanthocinini Blanchard, 1845 and its relatives,
and shares some very particular features: scape and femora clavate, pedicel relatively elongate, noteworthy protu-
berances on pronotum, spinous tubercles and bristles on elytra. Those resemblances may suggest that this genus has
relationship with them and is distant from the other congeners of the tribe Morimopsini. The systematic position is
needed to be reviewed with phylogenetic analysis in future.
Acknowledgements
We wish to express our thanks to Michiaki Hasegawa (Toyohashi Museum of Natural History, Toyohashi, Japan),
Nobuo Ohbayashi (Miura, Japan), Shigeo Tsuyuki (Zushi, Japan), and Hiroyuki Wakahara (Vientiane, Laos) for
various help on examining materials. We also thank Tatsuya Niisato (Bioindicator. Co., Ltd., Tokyo, Japan) for his
review on the original draft of this paper.
References
Gouverneur, X. (2016) Description d’un nouveau Morimopsini Lacordaire, 1869 du Laos (Coleoptera, Cerambycidae, Lamiinae).
Les Cahiers Magellanes, New Series, 21, 26–29.
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100 · Zootaxa 4941 (1) © 2021 Magnolia Press
Yamasako, J. & Lin, M.-Y. (2018) Review of the genus Metipocregyes Breuning, 1939 with two new combinations and three
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