Cryptocephalus (s. str.) langxianus Duan, Wang & Zhou, 2025
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publication ID |
https://doi.org/10.11646/zootaxa.5653.4.5 |
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publication LSID |
lsid:zoobank.org:pub:9062D359-95FE-451E-8428-6C6E54FFDD0E |
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DOI |
https://doi.org/10.5281/zenodo.15822554 |
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persistent identifier |
https://treatment.plazi.org/id/039587A4-FFFE-FF97-BD83-F921FAD78ECB |
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treatment provided by |
Plazi |
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scientific name |
Cryptocephalus (s. str.) langxianus Duan, Wang & Zhou |
| status |
sp. nov. |
2. Cryptocephalus (s. str.) langxianus Duan, Wang & Zhou sp. nov.
( Figs 2-1; 2-2 View FIGURE 1-2 )
Type locality. China: Tibet Province: Langxian .
Type material examined. Holotype: male, CHINA: Tibet Province: Langxian , 30. VI. 1997, coll. Chaodong Zhu ( IZ-CAS) . Paratypes: CHINA: Tibet Province: 1 male, 1 female, Langxian , northeast 10 km, 3110 m, 11. VI. 2016, coll. Hongbin Liang ( IZ-CAS) .
Measurements. BL = 3.43 mm, BW = 1.95 mm, HL = 1.02 mm, HW = 0.98 mm, PL = 1.05 mm, PW = 1.63 mm, EL = 2.45 mm, AL = 1.11 mm, AW = 0.30 mm, SL = 0.43 mm.
Description. Body ( Figs. 2-1A–B View FIGURE 1-2 ) small. Head dark brown; inner side of superior eye-lobes with two yellowish brown spots; clypeus and labrum darkly yellowish brown; mandibles reddish brown, apex black; antennae yellowish brown on first four segments, black on terminal seven. Pronotum pitchy brown, with two black marking along basal margin, occupying 2/3 of total area. Scutellum entirely black. Elytron yellow, with 5 black stripes, basal and sutural margins black. Ventral surface of body largely black, prosternum and middle part of abdomen yellowish brown, legs yellowish brown, claws black.
Head more than one-half as broad as prothorax, nearly round in frontal outline, vertex and frons with coarse punctures and long white pubescence. Eyes emarginate below middle, superior eye-lobes separated and wider than antennal insertions. Clypeus coarsely punctured and pubescent, apical region wrinkled, anterior margin weakly concave. Antennae of males long and broad, reaching apical 1/3 of elytra; 1 st segment thick, clubbed, 2 nd spherical, 2/5 as long as 1 st, 3 rd –4 th slender, about equal in length, 2 times as long as 2 nd, shorter than 5 th, from 5 th segment on somewhat equal in length, 5 th –8 th broadened and flatted.
Pronotum ( Figs. 2-1A–B View FIGURE 1-2 ) convex, smooth and shining, nearly 0.64 time as long as broad, trapezoidal in dorsal view; anterior margin slightly arcuate in anterodorsal view; basal margin weakly sinuate, obtuse and truncate in middle; disc evenly convex, smooth, with very fine punctures. Scutellum heart shaped, longer than broad, basal margin slightly sharp, sloping upward apically, smooth and without punctures.
Elytron ( Figs. 2-1A–B View FIGURE 1-2 ) about 2.5 times as long as broad, humeri slightly prominent, roundly truncate apically. Disc of each with eleven somewhat oblique rows of fairly deep punctures; interspaces with sparsely minute punctures.
Ventral surfaces of body with rather densely fine punctures and long silver pubescence. Prosternum square, surface uneven, posterior margin with a pair of horned protrusions. Mesosternum broad and small, longer than broad. The middle part of Pygidium of male with roundly arcuate posterior margin. Claws without teeth.
Aedeagus ( Figs. 2-1D–F, 2-2A–C View FIGURE 1-2 ) elongate, clubbed, about 3.7 times as long as wide. Apex of median lobe straight, slightly narrower than middle, pointed at apex, weakly curved in lateral view; with several pubescence on each side of apex, ventral side with fine punctures. Median orifice with middle sclerite bending inwards below surface. Inner sac oblong and simple. Tegmen Y-shaped, moderately sclerotized.
Female. Body more robust than male; antennae slightly shorter than male, reaching middle region of elytra; coloration of tarsi paler than males, legs yellowish brown, claws black; posterior margin of pygidium more broadened and rounded. Spermatheca ( ( Fig. 2-1C View FIGURE 1-2 ) ) hook-shaped, acute-angled bending near 3/5 from apex, very acute at apex; duct weakly sclerotized, spirally coiling. Rectal sclerites weakly sclerotized, connected between two rectangular sclerites on ventral side.
Distribution. China (Tibet).
Diagnosis. This new species is well distinguished from all its congeners by the elytra with regular pattern of yellow and black colors and by the special form of aedeagus in males.
Etymology. The specific epithet is derived from the Chinese name (Pinyin) of the type locality, Langxian.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.