Fissocantharis bifoveatus Y. Yang & X. Yang

Yang, Yuxia, Su, Junyan & Yang, Xingke, 2014, Taxonomic note and description of new species of Fissocantharis Pic from China (Coleoptera, Cantharidae), ZooKeys 443, pp. 45-59 : 47

Taxon classification Animalia Coleoptera Cantharidae

Fissocantharis bifoveatus Y. Yang & X. Yang sp. n. Figs 1, 9, 14‒16

Type material.

Holotype ♂ (IZAS): "CHINA, Yunnan Provin., Gongshan, Dulongjiang, Miliwang, above Bapo, 27. 72383°N, 98.36117°E, 1956m, 31.X.2004, night, Liang Hongbin collector, California Academy & IOZ, Chinese Acad. Sci.". Paratypes: 1♂ (IZAS): same data to holotype; 1♂ (IZAS): "CHINA, Yunnan Provin., Gongshan, Dulongjiang, Kongdang, roadside, 27.87696°N, 98.33587°E, 1525m, 25.X.2004, day, Liang Hongbin collector, California Academy & IOZ, Chinese Acad. Sci."; 1♂ (IZAS): "CHINA, Yunnan Provin., Gongshan, Bingzhongluo, Chaohong Bridge, beach, 28.06671°N, 98.58360°E, 1540m, 11.XI.2004, day, Liang Hongbin collector, California Academy & IOZ, Chinese Acad. Sci.".

Description.

Male (Fig. 1). Body black, mandibles dark brown, elytra red.

Head subquadrate, evenly narrowed behind eyes, dorsum slightly convex in center, with a distinct middle longitudinal line, each side with a small transverse impression behind antennal socket, head surface finely imbricate-punctate, matt, covered with sparse, fine, reddish brown decumbent pubescence; eyes moderately protruding, head width across eyes slightly wider than anterior margin of pronotum; terminal maxillary palpomeres nearly long-triangular, arcuate at apical one-third length of inner margin; antennae (Fig. 9) extending to apical one-third length of elytra, antennomeres II nearly as long as wide at apices, III‒VIII distinctly widened apically, slightly flattened on dorsal sides, III‒VII with outer apical angles distinctly protruding, III about twice as long as wide at apices, IV slightly longer than III, IV‒VI (Fig. 9a) each with a small, round, shallow impression at basal one-third of dorsal side, the whole length of IV‒VI and basal parts of VII with narrow longitudinal ridges along inner margins, VII‒VIII (Fig. 9b) each with a deep oblong fovea on dorsal side, the foveae smooth on inner surfaces, with all margins delimitated and well-developed, IX‒XI nearly parallel-sided, XI slightly longer than X and pointed at apex.

Pronotum subquadrate, slightly longer than wide, widest near posterior margin, anterior margin arcuate, anterior angle widely rounded, lateral margins slightly sinuate, moderately diverging posteriorly, posterior angles nearly rectangular, posterior margin nearly straight and narrowly bordered, disc moderately convex on posterolateral parts, with a distinct median longitudinal groove, surface pubescent and punctate like that of head.

Elytra about 4.5 times longer than pronotum, 3.5 times longer than humeral width, which about one-third wider than posterior margin of pronotum, outer margins nearly parallel, disc surface rugulose-lacunose, densely and coarsely punctate, matt, covered with dense, short and decumbent reddish brown pubescence, combined with much sparser, longer, semierected pubescence, elytral venation well developed, moderately costate.

All claws bifid, the lower claws nearly as long as upper ones at pro- and mesoclaws, slightly shorter than at metaclaws.

Abdominal sternite IX nearly triangular at apex. Aedeagus (Figs 14‒16): ventral process of each paramere slightly narrowed apically and rounded at apex, with inner margins curling up outwards; conjoint dorsal fig of parameres distinctly shorter than ventral processes, largely and triangularly emarginated in middle of apical margin, lateroapical angles obtusely triangular; middle node of basal pieces strongly diverging apically.

Female. Unknown.

Body length (males): 8.0‒9.0 mm; width: 1.8‒2.0 mm.

Diagnosis.

This species is similar to Fissocantharis pieli (Pic), but differs from the latter by the characteristic antennae of the male with antennomeres IV‒VI each with a small, round, shallow impression at basal one-third of dorsal side, VII‒VIII each with a deep oblong fovea on dorsal side; pronotum black; aedeagus: ventral process of each paramere slightly narrowed apically, with inner margins curling up outwards; conjoint dorsal fig of parameres largely and triangularly emarginated in middle of apical margin.

Distribution.

China (Yunnan).

Etymology.

The specific name is derived from the Latin bi (two) and fovea (pit), referring to its antennomeres VII‒VIII each with a deep fovea on dorsal sides in males.