Belonuchus admirabilis, Li & Zhou, 2010
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publication ID |
https://doi.org/ 10.1080/00222933.2010.483069 |
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persistent identifier |
https://treatment.plazi.org/id/C44AC444-FD50-8E4B-B25A-FC32BB440DC9 |
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treatment provided by |
Felipe |
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scientific name |
Belonuchus admirabilis |
| status |
sp. nov. |
Belonuchus admirabilis View in CoL sp. nov.
( Figure 2A–E View Figure 2 )
Type material
Holotype: male, China: Beijing: Xiaolongmen , 1100 m, 20 June to 2 July 2000, Yu Xiaodong collected (IZ-CAS).
Description
Head and pronotum black with feebly golden lustre. Antennae, elytra and scutellum black. Abdomen black with feebly blue lustre, posterior margin of tergite VII narrowly reddish-brown. Mandibles, maxillary and labial palpi dark brown. Legs black.
Body slender, 9.79 mm long (HPL: 2.86 mm). Head of rounded quadrangular shape, almost parallel-sided, with broadly obtuse hind angles, 1.31 mm long, 1.31 mm wide. Frons with four large punctures more or less placed as a transverse row. Tempora 0.65 mm long, sparsely and coarsely punctate; eyes small, slightly prominent, 0.41 mm long, 0.63 times as long as tempora. Lateral portions of head with scattered, large setiferous punctures; vertex largely impunctate. Dorsal surface of head with distinct and profound microsculpture of oblique waves. Antennae moderately long, antennomere I very long, thickened towards apex, antennomere III distinctly longer than antennomere II, antennomeres IV–VI slightly longer than wide, antennomere VII almost as long as wide, antennomeres VIII–X slightly transverse, antennomere XI distinctly longer than wide, obliquely truncate.
Pronotum distinctly narrowed posteriad, lateral margin slightly concave in posterior half; 1.31 mm long, 1.22 mm wide, slightly narrower than head (PW: HW = 0.94); dorsal rows on pronotum each with four large punctures, sublateral rows each with two large punctures; dorsal surface with distinct and profound microsculpture of transverse waves.
Elytra slightly widened posteriad, 1.80 mm long, 1.88 mm wide, 1.38 times as long as pronotum, densely and finely punctate, punctures separated by one or two times their diameter. Scutellum large, triangular, densely and finely punctate.
Abdomen slightly narrowed posteriad, widest 1.47 mm, punctures separated by two to three times their diameter at base, gradually becoming sparser toward apex of each tergite; surface between punctures with exceedingly fine and dense microsculpture of transverse striae; first three visible abdominal tergites with two basal lines, elevated area between basal lines almost impunctate.
Male. Anterior tarsomeres I–IV simple, not dilated, without modified pale setae ventrally, Sternite VIII with wide, shallow medio-apical emargination ( Figure 2D View Figure 2 ). Genital segments with styli of tergite IX simple, moderately setose apically. Sternite IX with markedly asymmetrical proximal portion, slightly emarginate apically ( Figure 2C View Figure 2 ). Tergite X simple, triangular, widely emarginate at apex, with numerous apical setae ( Figure 2E View Figure 2 ).
Aedeagus robust ( Figure 2A,B View Figure 2 ); median lobe with apical portion slightly narrowed into emarginate apex; in lateral view, apical portion slightly bent dorsad; paramere small with wide, shallowly emarginate apex, lacking sensory peg setae on underside of paramere.
Female. Unknown.
Etymology
The specific epithet is derived from Latin word admirabilis (meaning “strange”) and refers to the particular morphology of the aedeagus.
Distribution
At present known only from China (Beijing).
Remarks
The new species is similar to Belonuchus applanatus sp. nov. in having black body and dorsal rows on pronotum each with four large punctures. Belonuchus admirabilis sp. nov. can be easily distinguished from B. applanatus sp. nov. by relatively larger body size (BL: 9.79 mm in the former species versus BL: 6.20–7.34 mm in the latter), longer antennae and distinctive aedeagus, particularly the shape of the median lobe.
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