Fissocantharis septangula Y. Yang et X. Yang, sp. nov.
Creators: name: Yang, Yuxia
name: Li, Limei
name: Yang, Xingke
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cantharidae
Fissocantharis
Fissocantharis septangula

description: Fissocantharis septangula Y. Yang et X. Yang, sp. nov.
Figs. 1 B, 2D, 4A‒C, 5B, 6B
Type material. Holotype male (MHBU): CHINA, Shaanxi, Zhen’an, Cigou, 1100m, 33°30′00″N, 109°01′14″E, 21.VI.2014, leg. C.X. Yuan & Y. Tian. Paratypes: CHINA, Shaanxi: 1 male (MHBU): same data to the holotype; 3 males (MHBU): Zhen’an, Yungaisi, 850m, 33°29′16″N, 109°00′54″E, 18.VI.2014, leg. C.X. Yuan & Y. Tian; 1 male, 1 female (MHBU): Zhen’an, Yunzhen, Heiyaogou, 1217m, 33°29′26″N, 109°00′38″E, 20.VI.2014, leg. C.X. Yuan & Y. Tian. [All transliterated from Chinese labels].
Distribution. China (Shaanxi).
Description. Male (Fig. 1 B). Head orange, vertex black behind middle of eyes, mouthparts orange, dark brown at apices of mandibles, antennae orange, slightly darkened at antennomeres X‒XI, pronotum, scutellum and elytra black, legs orange, black at outer sides of tibiae and tarsi, prosternum orange, darkened at middle and lateral parts, meso- and metasterna and abdomen black, orange at posterior parts of abdominal sternites VIII and IX. Body densely covered with light yellow recumbent pubescence, mixed with slightly long semierect pubescence on elytra and along anterior margin of clypeus.
Head subquadrate, temples evenly narrowed posteriorly, surface matt, finely and sparsely punctate; eyes slightly protruding, head breadth across eyes distinctly wider than anterior margin of pronotum; terminal maxillary palpomeres long-triangular, nearly widest at apical one-third, with inner margins arcuate and sharp at apical parts; antennae extending to basal one-third length of elytra, antennomeres II nearly twice as long as wide at apex, III‒VII obliquely widened apically, III about twice as long as wide at apex, III‒VI each slightly roundly protruding at outer apical angle, VII (Fig. 2 D) about 1.5 times as long as maximal width, truncated at outer apical angles, VIII thickened and slightly widened apically, distinctly longer than wide at apex, distinctly protruding at inner apical angles, bald on surface of outer sides, with a shallow longitudinal groove at outer margin, IX lengthened and widened, about twice as long as maximal width, with outer margins triangularly protuberant and curled dorsally in middle, inner margins slightly sinuate, dorsal sides excavated and bald on the whole surface, also distinctly grooved along basal halves of outer margins, X‒XI parallel-sided, XI about one-third longer than X and pointed at apex.
Pronotum about 1.15 times longer than wide, anterior margin rounded, anterior angles rounded, lateral margins slightly diverging posteriorly, posterior angles nearly rectangular, posterior margin arcuate and slightly bordered, disc moderately 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.
Legs with all tarsal claws bifid, upper claws nearly as long as lower claws.
Aedeagus (Figs. 4 A‒C): ventral process of each paramere evenly narrowed apically and slightly hooked at apex in ventral view; conjoint dorsal plate of parameres about one-third length of ventral processes, parallel-sided at basal one-third then strongly obliquely narrowed apically, narrowly rounded at apical margin.
Female. Similar to males, but eyes less protruding, antennae filiform and black, antennomeres I‒II orange, pronotum slightly convex on disc. Abdominal sternite VIII (Fig. 5 B) moderately and subtriangularly emarginated on both sides of posterior margin, middle portion between lateral emarginations rounded at apex and distinctly longer than lateroapical angles, which are subrounded at apices. Internal organ of reproductive system (Fig. 6 B): 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 moderately long, thin and spiral; spermathecal duct distinctly thicker and 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: 6.0‒7.0 mm; width: 1.0‒ 1.2 mm.
Diagnosis. This species can be distinguished from other species of F. novemexcavatus species complex by the body coloration and characteristic antennae of male, especially the antennomeres VII which are truncated at outer apical angles.
Etymology. The specific name is derived from Latin sept (seventh) and angulus (angle), referring its antennomeres VII truncated at outer apical angles in male.
description: Published as part of Yang, Yuxia, Li, Limei & Yang, Xingke, 2015, Description of four new species related to Fissocantharis novemexcavatus (Wittmer, 1951) (Coleoptera, Cantharidae) from China, pp. 362-372 in Zootaxa 4058 (3) on pages 367-369, DOI: 10.11646/zootaxa.4058.3.4, http://zenodo.org/record/245336