Dendroides huanglong Pan 2025, sp. nov.
Creators: name: Yang, Xin-Mei
name: Young, Daniel K.
name: Yang, Bao-Lin
name: Pan, Zhao
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Pyrochroidae
Dendroides
Dendroides huanglong

description: Dendroides huanglong Pan sp. nov.
Type locality.
China • Sichuan Province, Aba Tibetan and Qiang Autonomous Prefecture, Songpan County, Huanglong National Natural Reserve.
Type specimens.
Holotype: ♂, labelled “ 2024. VII. 17 / 四川黄龙自然保护区 [Sichuan, Huanglong Natural Reserve] / 丹云峡保护站 (灯诱) [Danyunxia Protection Station (light trap)] / 河北大学博物馆 [Museum of Hebei University] ”, “ 32 ° 44 ' 59 " N / 103 ° 57 ' 38 " E / elev. 2542 m, 王成涛 [Cheng-Tao Wang] leg. / 河北大学博物馆 [Museum of Hebei University] ”, “ HOLOTYPE / Dendroides huanglong sp. n. / Det. Pan ” (MHBU). Paratypes: 1 ♂, 1 ♀, with same collection event labels as the holotype and additional labels: “ P 4 H 1 or P 4 H 2 ”, “ PARATYPE / Dendroides huanglong sp. n. / Det. Pan ” (MHBU).
Diagnosis.
Like D. ussuriensis, this new species can be easily distinguished from other Dendroides species by its colouration: body reddish testaceous, but maxillary palpomeres, antennae and most parts of legs black (Fig. 1). The body size of D. huanglong sp. nov. is larger than D. ussuriensis; the body length is 14.5–17.2 mm in the former and 12.0–13.0 mm in the latter. The compound eyes of D. huanglong sp. nov. are larger than those of D. ussuriensis: they meet above the head in the male of the former (Fig. 2) but not in the latter and OI is 8.1 in the female of the former (Fig. 3), but more than 25.0 in the latter. Additionally, the rami of the antennal flagellomeres are more prominent and elongate in D. huanglong sp. nov. than those of D. ussuriensis (Figs 4, 5), especially in the female, wherein flagellomere I has a distinct ramus, while flagellomere I in D. ussuriensis lacks a ramus; rami of flagellomeres III – VII are each longer than the preceding flagellomere in D. huanglong sp. nov., but shorter than the preceding flagellomere in D. ussuriensis.
Description.
Male: Body (Fig. 1) reddish testaceous, except apex of mandibles, maxillary palpomeres, antennae, eyes and legs (except base of coxae) black. Body covered with medium length yellow-brown setae; setae of antennae, tibiae and tarsi little shorter; setation dense, but sparse on pronotum. Body length: 14.5–15.4 mm; humeral width: 3.1–3.4 mm.
Head (Fig. 2) widest across compound eyes, with dense irregular punctures, diameter of punctures more than spacing of punctures. Compound eyes very large, contiguous dorsally. Clypeus and labrum flattened; labrum short, anterior margin slightly emarginate in middle. Frons with one sub-rounded depression between antennal fossae; occiput abruptly, transversely concave; genae reduced, short. Antennae (Fig. 4) long, extending back to near middle of elytra; scape slightly and gradually widened apically; pedicel short, approximately 1 / 4 length of scape; flagellomere I approximately twice as long as pedicel and slightly shorter than flagellomere II; flagellomeres III – V subequal in length and slightly longer than II, flagellomeres VI – VIII subequal in length and approximately as long as scape; flagellomere IX very long, approximately as long as preceding four flagellomeres; rami of flagellomeres extremely elongate and subcylindrical, at least 4.0 × length of respective flagellomere; rami of flagellomeres V – VIII with gradually decreasing lengths, ramus of flagellomere VIII approximately as long as flagellomere IX.
Pronotum (Fig. 6) subcampanulate, maximum width slightly narrower than head, length approximately 0.89 × width; posterior 2 / 3 of lateral margins subparallel; disc shining, sparsely covered with small punctures, diameter of punctures distinctly less than spacing of punctures; disc with conspicuous longitudinal mesal groove, distinct depression at centre of base and transverse groove along posterior margin. Scutellar shield rounded posteriorly, depressed at centre of base, sparsely punctate. Legs slender; prothoracic tarsomeres I and V subequal in length, II – IV gradually shorter; mesothoracic tarsomere I longest, V second longest, II – IV gradually shorter; metathoracic tarsomere I longest, IV second longest, II – III gradually shorter. Pretarsal claws simple.
Posterior margin of abdominal sternites III – VI subparallel, posterior margin of sternite VII almost straight, VIII with posterior margin acutely emarginate mesally. Parameres elongate, approximately twice as long as phallobase (Figs 7, 8), more than basal 9 / 10 of parameres fused in dorsal view (Fig. 7). Penis elongate, somewhat dorsoventrally flattened, abruptly narrowed apically and produced into a bluntly recurved hook (Figs 9–11).
Female: Similar to male, except body larger, length 17.2 mm, humeral width 4.2 mm; head slightly narrower than pronotum; compound eyes relatively small, not dorsally contiguous (OI = 8.1); genae slightly prominent (Fig. 3); antennal rami distinctly shorter than those of male, each longer than that of preceding flagellomere, but less than twice as long; ramus of flagellomere I sub-triangular (Fig. 5); pronotum slightly wider than that of male, aspect ratio ca. 0.84; posterior margin of abdominal sternites VII and VIII roundly convex.
Etymology.
The specific name is derived from the name of the type locality.
Distribution.
China: Sichuan.
description: Published as part of Yang, Xin-Mei, Young, Daniel K., Yang, Bao-Lin & Pan, Zhao, 2025, A new Dendroides species from China (Coleoptera, Pyrochroidae), with a key to the Palaearctic species, pp. 15-19 in Deutsche Entomologische Zeitschrift 72 (1) on pages 15-19, DOI: 10.3897/dez.72.146919