Stenothemus dinshuiensis, Švihla, Vladimír, 2011

Švihla, Vladimír, 2011, New taxa of the subfamily Cantharinae (Coleoptera: Cantharidae) from south-eastern Asia, with notes on other species III, Zootaxa 2895, pp. 1-34 : 18

publication ID	https://doi.org/ 10.5281/zenodo.277686
DOI	https://doi.org/10.5281/zenodo.6183677
persistent identifier	https://treatment.plazi.org/id/03C07C4C-FFBA-8A1E-FF29-A21919C7F807
treatment provided by	Plazi
scientific name	Stenothemus dinshuiensis
status	sp. nov.

Treatment

Stenothemus dinshuiensis sp. nov.

Fig. 20 View FIGURES 19 – 27. 19 – 27 .

Type locality. China, Sichuan province, Emei Shan mts., Dinshui env, ca 1400 m a.s.l.

Type material. Holotype ( SMNS), male, “ CHINA - Sichuan, Emei Shan [mts.], Umg.[-ebung] Dinshui, ca. 1400 m, 18.6.[19]96, D. ERBER [lgt.] [white label, printed]”. Paratype ( SMNS), same label data, 1 female.

Description. Coloration ( Fig. 20 View FIGURES 19 – 27. 19 – 27 ). Head honey yellow, tips of mandibles and sides of head behind eyes sienna. Antennae sepia, base of antennomere 1 honey yellow. Prothorax honey yellow, lateral sides of pronotum and ventrolateral sides of prothorax sienna. Meso- and metasternum and ventral portion of abdomen sepia. Femora honey yellow excluding infuscate tips, procoxae honey yellow, infuscate basally, meso- and metacoxa entirely honey yellow, tibiae sienna, meso- and metatibiae more or less honey yellow terminally, tarsi sienna in male; in female legs almost entirely chestnut brown, only tips of coxae and narrow bases of femora honey yellow in anterior and middle legs. Elytra in male chestnut brown, humeri and both sutural and lateral margins narrow and paler, ferrugineous; in female only narrow sutural margins ferrugineous.

Male. Eyes large and strongly protruding, head across eyes by more than one third wider than pronotum, lateral margins of head behind eyes straight, strongly converging posteriorly. Antennae reaching ca three quarters of elytral length. Antennomeres slender, 4–11 with very small, hardly visible, oval semilustrous impression. Surface of head finely imbricate-punctate, with fine, yellow decumbent pubescence, matt. Pronotum moderately longer than wide, anterior margin convex, anterior corners obtuse, lateral margins parallel, slightly bisinuate, posterior corners obtuse, posterior margin convex. Surface of pronotum with slight carina in posterior half, sculptured and pubescent like that of head, matt. Elytra parallel-sided, elytral venation slight but visible, surface of elytra finely imbricatepunctate basally, rest of elytra finely rugulose-lacunose, with fine, yellow, semierect pubescence, matt, semilustrous basally. Aedeagus very similar to that of S. hajeki sp. nov. ( Figs. 93–95 View FIGURES 91 – 104. 91 – 92 ).

Female. Eyes much smaller and less protruding than in male, head across eyes ca as wide as pronotum. Antennae shorter, reaching presumably ca one third of elytral length (last antennomeres missing in examined specimen). Last abdominal sternite very similar to that of S. hajeki sp. nov. ( Fig. 96 View FIGURES 91 – 104. 91 – 92 ).

Length (both sexes). 8.4–8.8 mm.

Differential diagnosis. Stenothemus dinshuiensis sp. nov. is very similar to S. hajeki sp. nov. in the form of its pronotum as well as the shape of the aedeagus; it differs in the only slightly wider parameres, bicolorous frons, vertex, pronotum, legs and elytra and, especially, by shorter antennae, which do not reach the elytral apex (cf. Figs. 19–20 View FIGURES 19 – 27. 19 – 27 ).

Etymology. The specific name is derived from the name of the type locality.

Distribution. China: Sichuan province.