Bulborhodopis humeralis, Bi & Chen, 2022

Bi, Wen-Xuan & Chen, Chang-Chin, 2022, First record of the genera Bulborhodopis and Mimapatelarthron from China, with description of one new species (Coleoptera: Cerambycidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 62 (1), pp. 111-116 : 112-114

Bulborhodopis humeralis sp. nov.

( Figs 1, 2 , 6, 7 , 14 )

Type material (39 specimens). Hඈඅඈඍඒඉൾ: CHINA: Yඎඇඇൺඇ: J, ‘ CHINA. Yunnan, Longchuan / Banggunjianshan / 1,500 –2,000 m 2017. VI.24–28 / leg. Wen-Xuan Bi’ ( IZAS). Pൺඋൺඍඒඉൾඌ: CHINA: Yඎඇඇൺඇ: 8 JJ 6 ♀♀, same data as holotype ( CBWX); 5 ♀♀, same locality as holotype ‘ 1,770 – 1,700 m 2017.VI.12–16 / leg. Wen-Xuan Bi’ ( CBWX); 3 JJ 1 ♀, same locality as holotype ‘ 1,770 – 1,700 m 2018.VI.3–9 / leg. Wen-Xuan Bi’ ( CBWX); 1 J 1 ♀, same locality as holotype ‘ 1,770 m 2015.IX.18 / leg. Xiao-Dong Yang’ ( CCCC); 1 J, same locality as holotype ‘ 1,850 m 2015.IX.20 / leg. Yan-Quan Lu’ ( CCCC); 1 ♀, same locality as holotype ‘ 1,550 m 2017.VI.26 / leg.Yi-Ting Chung’ ( CCCC); 1 J, same locality as holotype ‘ 1,700 m 2017.VIII.27 / leg. Xiao-Dong Yang’ ( CCCC); 1J, ‘ CHINA. Yunnan, Longchuan / Mangdong / 1,770 m 2015.IX.21 / leg.Yi-Ting Chung’ ( CCCC); 1♀, ‘ CHINA. Yunnan, Ruili / Bangdacun / 1,432 m 2014.IX.5 / leg.Xiao-Dong Yang’( CCCC); 1♀, ditto except ‘ 1,400 m 2015.IX.12 / leg.Yan-Quan Lu’ ( CCCC); 1 J 1 ♀, ditto except ‘ 2015.IX.13 ’ ( CCCC); 1♀, ‘ CHINA. Yunnan,Yingjiang, Nabang / 1,124 m / 2015.IX.13 / leg. Xiao-Dong Yang’ ( CCCC); 1 ♀, ‘ CHINA. Yunnan / Tengchong, Wuhe / Dayakou, 1,632 m / 2020.IX.2, leg. Y.-H. Li’ ( CCCC); 1 ♀, ‘ Yunnan, Ruili, Nongdao / Denggacun - Sepengqiao

/ 23.95285°N, 97.59808°E - / 23.97518°N, 97.56944°E // 927- 807 m / 2009.VIII.11 / leg.Hong-Liang Shi’ ( CCCC); 1J, ‘ CHINA, Yunnan Prov. / Tengchong, Jietou / Shabadi, beating shrubs / 25.40239°N, 98.70986°E // 1,923 m, 2006.V.15 day / Yin Changmin coll.’ ( IZAS); 1 ♀, ‘ CHINA, Yunnan Prov. / Tengchong, Qushi, Xiangyangqiao, shrubs / 25.21218°N, 98.57839E // 1,500 m, 2006.VI.4 day / Liang H.B., Hu P.’ ( IZAS).

Description. Male ( Fig. 1 ). Body length 7.6–9.1 mm, elytral maximum width 2.5–2.9 mm. Body and appendages mostly dark brown except for antennomeres III to XI which are reddish brown. Head, pronotum and most parts of legs moderately covered with intermixed pale and light tawny pubescence, of which light tawny one vaguely forms one longitudinal stripe on each side of central pronotal protuberance. Antennae with scape, pedicel, basal three-fourths of antennomeres III and IV clothed with similarly colored pubescence as head, remainders covered with fine dark brown pubescence; antennomeres III to V fringed with pale or dark brown hairs beneath, those hairs on apical fourth of antennomere IV and entire antennomere V relatively long and completely dark colored. Scutellum densely clothed with fine tawny pubescence. Elytron covered with combination of pale, tawny, or dark brown pubescence, with one pair of pale patches extending from humeri to slightly before midlength, one narrow stripe of the same color abutting behind dark brown band occupying elytral middle third, and a few pale spots near apices, also interspersed with small light tawny spots throughout. Ventral surface of thorax mostly covered with pale pubescence, except for that on mesanepisternum and lateral sides of metasternum light tawny; each abdominal ventrites I to IV vaguely provided with pair of small glabrous spots near each lateral margin.

Head with frons and vertex sparsely punctate, punctures partially associated with pale or dark brown setae; lower eye lobes vertical, slightly longer than gena. Antennae ca. 1.3 times as long as body length; scape densely, finely punctate, moderately thickened near midlength; antennomeres III to XI gradually decreasing in width toward apex; antennomere III 2.1 times as long as scape, slightly longer than IV; antennomeres III and IV combined slightly shorter than succeeding seven antennomeres together.

Pronotum 1.2 times as long as basal width; discal protuberance developed, surface finely and transversely wrinkled, with median longitudinal groove; lateral margins weakly prominent with sparse and coarse punctures. Scutellum about twice as wide as long, posterior margin broadly rounded.

Elytra 1.9 times as long as maximum width, 1.6 times wider than pronotal base; fusiform, weakly widened from obtuse-angulate humeri to near midlength, thence convergent toward separately subacute apices, in lateral view abruptly convex behind basal depression, highest near midlength, then gradually declivous toward apex. Each elytron provided with several longitudinal rows of deep and coarse punctures, which are gradually becoming shallower distally; interspaces between each row of punctures sparsely granulated, of which the 1 st, 3 rd and 5 th interspace are partially raised to form three carinae, and lateral two are relatively more prominent behind elytral basal third, then gradually reduced distally. Hindwings reduced, about 1.1 times as long as elytral length.

Metaventrite shortened, about 1.1 times as long as mesoventral length.

Legs moderately long and stout, femora clavate, sparsely punctate.

Male genitalia. Tergite VIII ( Fig. 14a ) roughly trapezoidal with lateral sides broadly rounded; anterior margin bearing sparse long setae. Tegmen ( Fig. 14b ) in lateral view moderately curved, rhombic in shape and widest near middle in ventral view; lateral lobes thick, less than one-fourth of total length of tegmen, sparsely provided with fine setae on apex. Median lobe ( Fig. 14c ) slender, slightly longer than tegmen, moderately curved in lateral view; apex acuminate. Endophallus in everted condition ( Fig. 14d ) gently S-shaped, mostly slender except for weak swelling near distal two-fifths; crescent-shaped sclerites well developed; basal fifth coarsely wrinkled on both dorsal and ventral surfaces; ejaculatory duct single; gonopore situated at apex.

Female ( Fig. 2 ). Body length 8.0– 10.6 mm, elytral maximum width 2.8–3.7 mm. Almost identical to male in general appearance. Body relatively stout. Antennae 0.9–1.0 times as long as body length. Elytra relatively broad near midlength. Legs relatively short.

Differential diagnosis. This new species resembles Bulborhodopis inornatus Holzschuh, 2017 from Northern Laos, but can be readily distinguished by the elytra widest near its midlength instead in the apical third, elytral apices relatively acute, elytra provided with a pair of light pubescent patches behind the humeri, and by the presence of a dark brown band on the middle third of elytra (absent in B. inornatus ).

Etymology. The specific epithet is the Latin adjective humeralis (meaning having prominent shoulders), referring to the humeral light colored pattern of the new species.

Distribution. China: Yunnan (Longchuan County, Tengchong City and Ruili City).

Figures

Figs 1–5. Habitus of Bulborhodopis and Mimapatelarthron species. 1–2 – Bulborhodopis humeralis sp. nov., paratype; 3 – B. barbicornis Breuning, 1948; 4–5 – Mimapatelarthron bulbiferum Holzschuh, 2017. a – lateral view. 1, 4 – male; 2, 3, 5 – female. Scale bars = 2 mm.

Figs 6–9. Frontal view of head of Bulborhodopis and Mimapatelarthron species. 6–7 – Bulborhodopis humeralis sp. nov.; 8–9 – Mimapatelarthron bulbiferum Holzschuh, 2017. 6, 8 – male; 7, 9 – female. Scale bars = 0.5 mm.

Figs 14–15.Male terminalia of Bulborhodopis and Mimapatelarthron species.14 – Bulborhodopis humeralis sp.nov.; 15 – Mimapatelarthron bulbiferum Holzschuh, 2017. a – Tergite VIII with sternites VIII & IX in ventral view; b – tegmen in ventral view and lateral view; c – median lobe in ventral view and lateral view; d – endophallus in inflated and everted condition. Scale bars = 0.5 mm (d – not to scale).