Fissocantharis basilaris Y. Yang & X. Yang

Yang, Yuxia, Li, Limei, Guan, Kaile & Yang, Xingke, 2015, Taxonomy of Fissocantharis Pic (Coleoptera, Cantharidae) from Guangxi, China, with descriptions of six new species, ZooKeys 489, pp. 95-123 : 102-103

Taxon classification Animalia Coleoptera Cantharidae

Fissocantharis basilaris Y. Yang & X. Yang sp. n. Figs 2A, 5A‒C, 8D, 10A

Fissocantharis langaniformis (Wittmer, 1989): Yang et al. 2014: 14 [misidentification].

Type material.

Holotype ♂ (MHBU): CHINA: Guangxi: Wuming, Damingshan, 1100m, 27.V.2011, leg. H.Y. Liu. Paratypes: CHINA: Guangxi: 26♂♂, 17♀♀ (MHBU): same data to the holotype; 20♂♂, 13♀♀ (MHBU): same locality and collector, 1230‒1423m, 20.V.2011; 4♂♂, 4♀♀ (MHBU): same locality and collector, 600-900m, 25.V.2011; 1♀ (MHBU): same locality, 23.V 2011, leg. Li-Ying Guo.

Description.

Male (Fig. 2A). Head black, mouthparts blackish brown, light brown at bases of mandibles and labium, antennae black, yellow at ventral sides of antennomeres I‒III, pronotum black, scultellum black, elytra blue, with strong metallic shine, legs black, yellow at apical parts of coxae, trochanters and basal parts of femora, presternum dark brown, meso- and metasterna and abdomen black. Body densely covered with short decumbent dark brown pubescence, also mixed with slightly long semierect pubescence along anterior margin of labrum and on disc of elytra.

Head subquadrate, temples evenly narrowed posteriad, surface semilustrous, finely and densely punctate; eyes strongly protruding, head breadth across eyes distinctly wider than anterior margin of pronotum; maxillary palpomeres IV longer than wide, widest at apical one-third, arcuate and sharp at apical parts of inner margins; antennae almost extending to apical one-fourth length of elytra, antennomeres II slightly longer than wide at apices, III‒X slightly flattened and widened apically, III about twice as long as II, IV‒XI each with a small rounded smooth impression at base of outer margin, IV about one-third longer than III, XI nearly parallel-sided, slightly longer than X and pointed at apices.

Pronotum about 1.26 times longer than wide, widest near base, anterior margin rounded, anterior angle rounded, lateral margins sinuate, moderately diverging posteriorly, posterior angle nearly rectangular, posterior margin arcuate and slightly bordered, disc distinctly convex on posterolateral parts, surface semilustrous, punctate like that on head.

Elytra about 4.0 times longer than pronotum, 3.0 times longer than humeral width, lateral margins nearly parallel, disc surface semilustrous, rugulose-lacunose and finely punctate.

All tarsal claws bifid, upper claws nearly as long as lower claws.

Aedeagus (Fig. 5A‒C): conjoint dorsal plate of parameres greatly reduced, rounded at apical margin; ventral process of each paramere evenly narrowed apically, slightly hooked at apex.

Female. Similar to male, but eyes not so protruding; antennae shorter, extending to elytral mid-length, antennomeres III‒X nearly parallel-sided, IV‒XI without impressions; pronotum slightly wider, about 1.13 times longer than wide, moderately convex at postero-lateral parts of disc. Abdominal sternite VIII (Fig. 8D) roundly protuberant in middle of posterior margin, latero-apical angels subrounded. Internal organ of reproductive system (Fig. 10A): vagina stout and abruptly narrowed and extended into a long duct above median oviduct; diverticulum and spermathecal duct arising from the end of the long duct of vagina; diverticulum slightly long, thin and spiral; spermathecal duct distinctly thicker and slightly shorter than diverticulum; spermatheca composed of a spiral tube which is distinctly longer than diverticulum, provided with a very long and thin accessory gland, which is much longer than the spiral tube of spermatheca; median oviduct situated in middle of vagina.

Body length: 7.0‒11.0 mm; width: 1.2‒2.0 mm.

Diagnosis.

This species is similar to Fissocantharis langaniformis (Wittmer, 1989), but can be distinguished from the latter by the antennomeres IV‒XI each with a rounded smooth impression at base of outer margin in male; aedeagus: conjoint dorsal plate of parameres rounded at apical margin.

Distribution.

China (Guangxi).

Etymology.

The specific name is derived from Latin basilaris (basal), referring to its antennomeres IV‒XI each with a rounded impression at base of outer margin in male.