Rabigus cuspus Fei & Zhou, 2021
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publication ID |
https://doi.org/ 10.11646/zootaxa.4996.1.4 |
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publication LSID |
lsid:zoobank.org:pub:C5FF4CF6-3F02-481E-AAE7-60CCACF2B9FB |
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persistent identifier |
https://treatment.plazi.org/id/0383E97D-3029-483E-14AA-FBE1FDFF18AE |
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treatment provided by |
Plazi |
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scientific name |
Rabigus cuspus Fei & Zhou |
| status |
sp. nov. |
Rabigus cuspus Fei & Zhou View in CoL , sp. nov.
( Figs. 1A–F View FIGURE 1 )
Type material. Holotype: ♂, China: Sichuan: Baoxing, Fengtongzhai National Nature Reserve , 1600 m, 17.VIII.2003, collected by Zhao Caiyun ( IZ-CAS).
Description. Measurements: BL= 4.77 mm (HPL= 1.70 mm); HL= 0.79 mm, HW= 0.66 mm (HW: HL= 0.83); ELL= 0.22 mm; TL= 0.36 mm; PL= 0.90 mm, PW= 0.68 mm (PW: HW= 1.03); EL= 1.02 mm, EW= 0.86 mm; AW= 0.9 mm.
Head, pronotum and elytra black, pronotum paler than elytra; maxillary and labial palpi dark reddish-brown; antennomeres I–III dark reddish-brown, antennomeres IV–XI brownish-yellow becoming paler apically; legs brownish-yellow. Abdomen black, shining.
Head narrow, oval, gradually narrowing towards base, hind angles entirely obliterated, slightly narrower than pronotum. Eyes moderate and flat, about 0.61 times as long as tempora; dorsal surface of head with sparse setifer- ous punctures and fine microsculpture. Antenna fairly long, antennomeres II–III subequal in length, antennomeres VIII–X gradually becoming shorter, slightly wider than long, antennomere XI shorter than two preceding segments combined.
Pronotum oval, elongate, 1.32 times as long as wide, slightly convex, almost parallel-sided, dorsal rows on pronotum each with 1+5 large punctures, with fine microsculpture of specialized long lines.
Elytra 1.18 times as long as wide, 1.13 times as long and 1.26 times as wide as pronotum, densely and finely punctures, pubescence fine, surface between punctures without microsculpture. Scutellum small, triangular, with setiferous punctures.
Abdomen wide, very gradually narrowing towards apex; setiferous punctures on abdominal tergites similar to that on elytra, but denser and somewhat finer, surface between punctures without microsculpture.
Male: Parts of sternite VIII and sternite IX damaged. Sternite IX longer and slender, with slightly asymmetrical basal portion, apex deeply emarginate ( Fig. 1F View FIGURE 1 ). Tergite X simple, trapezoid shape, almost truncate and with slight emargination at apex ( Fig. 1E View FIGURE 1 ). Genital segment with styli of tergite IX simple, dense setae apically ( Fig. 1D View FIGURE 1 ).
Aedeagus ( Figs. 1B–C View FIGURE 1 ) narrow and elongate, median lobe in ventral view rather suddenly narrowed, apical portion with acute apex; paramere as in Fig. 1B View FIGURE 1 , apex of paramere with the broadest portion almost as broad as median lobe, with three large and one small sensory peg setae near the petiolar-angle in lateral view.
Remarks. Rabigus cuspus Fei & Zhou , sp. nov. is similar to Rabigus ladakhensis Coiffait, 1982 and Rabigus pulloides Coiffait, 1982 , but differs from two latter species by the number of sensory peg setae: the new species has only three large ones and one small. It is thus easy to distinguish them.
Female. Unknown.
Etymology. The specific epithet is derived from the Latin word cusp - (pointed), refers to the sharp apex of the median lobe and the paramere.
Distribution. China (Sichuan).
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.