Endelus ( Endelus ) jiangxiensis Kalashian, 2025

Kalashian, Mark, 2025, Two new species of Endelus Deyrolle, 1864 (Coleoptera, Buprestidae) from China with notes on Endelus acutiplicis Obenberger, 1944, Zootaxa 5715 (1), pp. 188-193 : 189-192

Endelus ( Endelus) jiangxiensis Kalashian , sp. nov.

( Figs 2 , 6 )

Type locality. China, Jiangxi Prov., Jiggang Shan Mts., Jinggangshan Zhufeng .

Type material. Holotype — ♂ ( NMPC): CHINA: Jiangxi prov., 29.IV.2011, Jiggang Shan Mts., Jinggangshan Zhufeng (forested slopes of river valley), 26°30.01′N, 114°08.6′E, 805 m, M. Fikáček & J. Hájek leg. [p] / HOLOTYPE, Endelus ( Endelus) jiangxiensis sp. nov., Kalashian det., 2025 [p, red].

Description of the holotype, male. Body moderately elongated, approximately 2.5 times as long as wide, moderately convex, nearly black with very indistinct greenish-bronze reflection. Surface with indistinct shagreen, rather shiny, pronotum laterally and hypomera shagreened, with silky luster. Body length 3.8 mm, width— 1.53 mm. ( Fig. 2 ).

Head large, enlarged anteriorly, subequal in width with anterior margin of pronotum, frontovertex deeply slightly irregularly somewhat triangularly arcuately concave, oculofrontal margins keel-shaped, eyes large, moderately convex, not projecting from head contour, reniform in lateral aspect. Clypeus turned back to horizontal plane, slightly transversely triangular with anterior margin nearly straight. Frons moderately widened posteriorly, anteriorly with deep and large slightly transversal fovea and with deep round fovea at the level of upper one quarter of frons (in frontal view). Surface with few rather big irregular shallow punctures. Antennae serrate from antennomere 6, antennomere 5 moderately enlarged distally, antennomere 6 nearly equilateral, following antennomeres moderately transverse.

Pronotum 1.85 times as wide as long, widest just behind middle, subcordiform, sides weakly serrate, slightly nearly regularly arcuate and weakly emarginate posteriorly towards sharp posterior angles. Anterior margin very slightly bisinuate, edged with entire but indistinct groove, posterior margin strongly bisinuate with moderately wide subtruncate median lobe, fringed with thin groove shortly continuing anteriorly near posterior angles. Pronotum flattened laterally, distinctly irregularly depressed along posterior margin. Pronotal disk with 2 distinct nearly straight transverse elevations, anterior one slightly lower and shorter than posterior, with rounded edge; posterior with edge sharper than in anterior one, cariniform. Surface with rather big flat irregular punctures bearing at the bottom small pinned punctures. Scutellum subtransversely triangular.

Elytra approximately 1.9 times as long as wide, widest just behind middle, weakly sinuately narrowed anteriorly towards humeral tubercles and very weakly convexly narrowed to conjointly slightly irregularly arcuate apex. Elytra convex, narrowly flattened along sides behind humeri in anterior 1/3, adpressed medially of humeral tubercles and along posterior 3/5 of suture. Elytral sides very weakly serrate, fringed with thin groove reaching approximately to posterior 2/5 of elytra. Surface with small distinct irregular hyphen-like punctures and rather rough irregular transverse wrinkles, structure smoothed posteriorly.

Prosternal process with dense large and rough irregular punctures, metasternum and abdominal ventrites with irregular net of very indistinct thin oblique wrinkles, posteriorly very smooth, wrinkles indistinct. Anal ventrite irregularly rounded distally, with a few short yellowish setae medially.

Male genitalia as in Fig. 6 .

Female unknown.

Differential diagnosis. Endelus ( Endelus) jiangxiensis sp. nov. is closely related to E. storozhenkoi sp. nov. and E. ( E.) sausai and belongs to the same species group. It differs from both species by the somewhat wider pronotum (in E. ( E) storozhenkoi sp. nov. and E. ( E) sausai the pronotum is 1.7–1.8 as long as wide), which is subcordiform with the sides widely arcuate anteriorly and sinuate before sharp posterior angles, and by the structure of male genitalia. It differs from E. ( E) storozhenkoi sp. nov. also by the narrower and somewhat triangular frontal depression. Like from E. ( E.) storozhenkoi sp. nov., E. ( E.) sausai also differs from Endelus ( E.) jiangxiensis sp. nov. by the reddish tint of dorsal surface.

Etymology. Specific epithet refers to the province of origin.

Distribution. Known only from the type locality.

Figures

FIGURES 1–4. Habitus of Endelus (Endelus) species; 1—E. (E.) storozhenkoi Kalashian, sp. nov., holotype, male; 2—E. (E.) jiangxiensis Kalashian, sp. nov., holotype, male; 3—E. (E.) sausai Kalashian, 2007, paratype, female; 4—E. (E.) acutiplicis Obenberger, 1944, lectotype. Figures 1, 2, 4 by M. Kalashian, 3 by T. Ghrejyan.

FIGURES 5–7. Male genitalia of Endelus (Endelus) species; 5—E. (E.) storozhenkoi Kalashian, sp. nov., holotype; 6—E. (E.) jiangxiensis Kalashian, sp. nov., holotype; 7—E. (E.) sausai Kalashian, 2007, holotype. Scale bars = 0.5 mm.