Craspedomerus glenoides ( Schubert, 1908 )

Li, Liang & Zhou, Hong-Zhang, 2010, Taxonomy of the genus Craspedomerus Bernhauer, 1911 (Coleoptera: Staphylinidae: Philonthina) from China, Zootaxa 2506, pp. 1-25 : 16-18

7. Craspedomerus glenoides ( Schubert, 1908) , first record from China

( Figs. 9 A–E, 12B)

Schubert, 1908: 622 ( Philonthus , type locality: Kulu, Himalaya, India); Bernhauer, 1911: 88 ( Craspedomerus ); Bernhauer & Schubert, 1914: 400 ( Craspedomerus , catalog); Cameron, 1932: 249 ( Craspedomerus , characters); Scheerpeltz, 1933: 1410 ( Craspedomerus , catalog); 1976b: 149 ( Craspedomerus , characters); Herman, 2001: 2583 ( Craspedomerus , world catalog); Smetana, 2004: 632 ( Craspedomerus , catalog for Palaearctic region).

Material examined. CHINA: Yunnan: 7ɗɗ, 3ΨΨ, Gaoligongshan (25°59´N, 98°37´E), 2450 m, 15– 18.X.1998, Long C. L. collected (IZ-CAS); 2ΨΨ,Gongshan (27°37´N, 98°36´E), 2100 m, 10.VII.2000, Liang Hongbin collected (IZ-CAS); ɗ, 2ΨΨ, Dali Bai Nat. Aut. Pref. Diancangshan (25°41´N, 100°06´E), 2750– 3000 m, 17–23.VI.2005, D. W. Wrase collected ( NMW); Ψ, Nujiang Lisu. Aut. Pref. Gaoligongshan (25°58´N, 98°41´E), pass 21 km NW Liuku, 3150 m, 9.VI.2007, D. W. Wrase collected ( NMW); Tibet: 4ɗɗ, Ψ, Nielamu (28°19´N, 85°56´E), 1700–2650 m, 12–15.V.1966, Huang Fusheng collected (IZ-CAS).

Description. Head and pronotum black with slightly bronze-greenish reflex. Antennae black with 7th–11th segments yellow. Elytra fusco-testaceous with a dark transverse fascia across the middle. Scutellum black. Abdomen black with strongly iridescent reflex, entire tergites VII–X reddish-yellow. Mandibles dark-brown. Maxillary and labial palpi and legs reddish-brown.

Body 12.3–13.3 mm long (HPL = 4.73–4.90 mm). Head of rounded quadrangular shape, 1.88–1.96 mm long, 2.04–2.20 mm wide, slightly wider than long (HW:HL = 1.09–1.13). Tempora 0.74–0.82 mm long, almost evenly rounded, densely and coarsely punctate, setiferous; eyes moderately large, slightly protruded, 0.65–0.74 mm long, 0.81–0.89 times as long as tempora. Dorsal surface of head with moderately numerous, large setiferous punctures, becoming sparser toward vertex, vertex largely impunctate; entire head with distinct and profound microsculpture of transverse waves.

Pronotum subquadrate, slightly narrowed anteriad, 2.29–2.53 mm long, 2.12–2.29 mm wide, slightly wider than head (PW:HW = 1.04–1.13), densely and finely punctate, punctures separated by 3–4 times their diameter, narrowly impunctate along midline; surface with distinct and profound microsculpture of oblique, long waves.

Elytra 2.94–3.02 mm long, 2.94–3.10 mm wide, 1.20–1.32:1 times as long as pronotum, densely and finely punctate, punctures separated by 1–2 times their diameter. Scutellum large, triangular, densely and finely punctate.

Abdomen a little narrowed posteriad, widest 2.45–2.69 mm; tergites densely and finely punctate, at base punctures separated by 2–3 times their diameter, gradually becoming sparser toward apex of each tergite; surface between punctures with dense and fine microsculpture of transverse striae; elevated area between basal lines tergites III–V almost impunctate.

Male. Sternite VIII with moderately wide, obtusely triangular medio-apical emargination ( Fig. 9 D). Sternite IX with distinctly asymmetrical basal portion, apex deeply emarginate, each lobe bearing two long apical setae ( Fig. 9 C). Tergite X simple, triangular, subrounded at apex, with variable number of apical setae ( Fig. 9 E).

Aedeagus as ( Figs. 9 A–B); underside of each branch of paramere with very small, pointed sensory peg setae arranged at lateral side at subapical portion ( Fig. 12 B).

Female. Sternite VIII without medio-apical emargination. Gonocoxites moderately developed, second gonocoxites each with minute stylus bearing two long apical setae. Tergite X similar to that of male.

Remarks. Schubert (1908) described this species, as Philonthus glenoides , from the Himalaya region. Bernhauer (1911) erected the genus Craspedomerus based on this species. Later, Cameron (1932) and Scheerpeltz (1976b) redescribed it. Craspedomerus glenoides is similar to C. birmanus and C. ganeshensis in having elytra fusco-testaceous and antennae black with 7th–11th segments yellow. Craspedomerus glenoides can be easily distinguished from C. birmanus and C. ganeshensis by elytra with a dark fascia across the middle. This species is reported from China for the first time.

Distribution. China (Yunnan, Tibet), India.

Figures

FIGURE 9. Craspedomerus glenoides (Schubert). A, aedeagus, ventral view; B, aedeagus, lateral view; C, sternite IX of male; D, sternite VIII of male; E, tergite X of male. Scale bars 1 mm.

FIGURE 12. Scanning electron micrographs of the underside of one of the branches of the paramere of Craspedomerus. A, C. sinetuber (Coiffait); B, C. glenoides (Schubert); C, C. beckeri Bernhauer; D, C. violaceipennis Cameron; E, C. zhangi Li & Zhou sp. n.; F, C. giganteus Li & Zhou sp. n.; G, C. ganeshensis Coiffait; H, C. gongshanus Li & Zhou sp. n.; I, C. cyanipennis Scheerpeltz. Sensory peg setae are indicated with arrows.