Belonuchus coomani, 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-FD5D-8E4D-B18E-FF58BB4C0A69 |
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treatment provided by |
Felipe |
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scientific name |
Belonuchus coomani |
| status |
sp. nov. |
Belonuchus coomani View in CoL sp. nov.
( Figures 4A–L View Figure 4 , 5A–H View Figure 5 )
Type material
Holotype: male, Vietnam: Tonkin: Hoa-Binh , July 1937, A. de Cooman collected (IZ-CAS) . Paratypes: one male, three females, same data as holotype ; two males, one female, China: Yunnan: Funing: Boyi , 260 m, 17 April 1998, Zhou Haisheng collected (IZ-CAS) ; one male, one female, China: Guangxi: Napo , 1005 m, 12 April 1998, Zhou Haisheng collected (IZ-CAS) ; one male, Indochina: Hoabinh, Alex Bierig collected, Field Mus. Nat. Hist. 1966, A. Bierig Colln. Acc. Z–13812 ( FMNH) .
Description
Head and pronotum black sometimes with strongly golden lustre. Elytra reddish-brown. Scutellum usually reddish-brown. Antennae black with antennomeres I–III to various extent reddish-brown, antennomere XI or antennomeres X–XI reddish-brown. Abdomen black with feebly blue lustre, posterior margins of tergites III–VIII markedly reddishbrown. Mandibles dark brown. Maxillary and labial palpi and legs reddish-brown.
Body depressed, 9.38–12.0 mm long (HPL: 2.86–4.16 mm). Head obtusely quadrangular, 1.31–1.80 mm long, 1.55–2.20 mm wide, distinctly wider than long (HW: HL = 1.19–1.29), slightly widened posteriad behind eyes, with broadly obtuse hind angles. Frons with four punctures placed in square. Tempora 0.49–0.81 mm long, densely and coarsely punctate; eyes moderately large, slightly prominent, 0.49–0.57 mm long, 0.70–1.00 times as long as tempora. Lateral portions of head with scattered, large setiferous punctures; vertex largely impunctate; entire head with distinct and profound microsculpture of transverse waves. Antennae moderately long, antennomere I very long, thickened towards apex, antennomere III distinctly longer than antennomere II, antennomere IV almost as long as wide, antennomeres V–X distinctly transverse, antennomere XI distinctly longer than wide, obliquely truncate.
Pronotum distinctly narrowed posteriad, lateral margin slightly concave in posterior half; 1.39–1.96 mm long, 1.39–1.88 mm wide, slightly narrower than head (PW: HW = 0.85–0.91); dorsal rows each with seven or eight punctures, lateral portions each with three to five large punctures; microsculpture fine, similar to that on head.
Elytra slightly widened posteriad, 1.78–2.45 mm long, 1.80–2.53 mm wide, 1.29–1.45 times as long as pronotum, densely and finely punctate, punctures separated by two to three times their diameter. Scutellum large, triangular, densely and finely punctate.
Abdomen slightly narrowed posteriad, widest 1.63–1.96 mm, finely and closely punctate, punctures separated by one or two 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 with one or two more or less irregular rows of fine punctures.
Male. Anterior tarsomeres I–IV dilated, with modified pale setae ventrally ( Figure 4K View Figure 4 ). Sternite VIII with inconspicuous, medio-apical emargination ( Figure 5F View Figure 5 ). Genital segments with styli of tergite IX simple, moderately setose apically. Sternite IX with markedly asymmetrical proximal portion, moderately deep emarginate apically; each lobe with one long apical and one long subapical seta ( Figure 5E View Figure 5 ). Tergite X simple, triangular, subrounded at apex, with numerous long apical setae ( Figure 5G View Figure 5 ).
Aedeagus with median lobe distinctly exceeding paramere, subtruncated at apex ( Figure 5A View Figure 5 ); in lateral view, median lobe distinctly widened anteriad with a large, sharp tooth subapically ( Figure 5B View Figure 5 ); paramere distinctly narrower than median lobe, subrounded at apex, face adjacent to median lobe with much more sensory peg setae than that of B. rufoniger , arranged along apico-lateral margins of paramere ( Figure 5C,D View Figure 5 ).
Female. Anterior tarsomeres I–IV slightly dilated, with modified pale setae ventrally. Sternite VIII subarcuate at apex, without medio-apical emargination. Genital segments
with styli of tergite IX similar to that of male. Tergite X large, triangular, subrounded at apex, with numerous apical setae ( Figure 5H View Figure 5 ).
Etymology
The species is named in honour of the collector A. de Cooman.
Distribution
At present known only from China (Yunnan, Guangxi) and northern Vietnam (Hoa-Binh).
Remarks
The new species is similar to Belonuchus rufoniger Fauvel, 1895 and B. abdominalis Cameron, 1937 in having reddish-brown elytra. Belonuchus coomani sp. nov. can be easily distinguished from B. rufoniger by scutellum usually reddish-brown (scutellum black in the latter species), posterior margins of tergites III–VIII markedly reddishbrown (tergites III–VIII entirely black or sometimes posterior margins of tergites III–IV narrowly reddish-brown), more punctures on post-ocular region and different morphology of median lobe of aedeagus. Belonuchus abdominalis differs from B. coomani sp. nov. by entirely narrowly reddish-brown margins of pronotum (pronotum entirely black in the new species) and tergites III–IV usually entirely reddish-brown (only posterior margins of tergites III–IV reddish-brown in the new species).
| FMNH |
Field Museum of Natural History |
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