Stenothemus flavus Y. Yang & X. Yang, 2021
|
publication ID |
https://doi.org/ 10.5852/ejt.2021.744.1307 |
|
publication LSID |
lsid:zoobank.org:pub:187C3A01-3095-4A13-BC14-6C4D460CB757 |
|
DOI |
https://doi.org/10.5281/zenodo.4689919 |
|
persistent identifier |
https://treatment.plazi.org/id/0F33A6EA-1C0A-4528-8A44-CF59FC42EF73 |
|
taxon LSID |
lsid:zoobank.org:act:0F33A6EA-1C0A-4528-8A44-CF59FC42EF73 |
|
treatment provided by |
Plazi |
|
scientific name |
Stenothemus flavus Y. Yang & X. Yang |
| status |
sp. nov. |
Stenothemus flavus Y. Yang & X. Yang sp. nov.
urn:lsid:zoobank.org:act:0F33A6EA-1C0A-4528-8A44-CF59FC42EF73
Figs 2B View Fig , 4D‒F View Fig , 7A View Fig , 8E View Fig
Differential diagnosis
The new species is related to S. melleus Švihla, 2005 (located in Sichuan, China), but can be distinguished by its larger body (no more than 9.0 mm length in the latter); femur orange, darkened only at base (in the latter, darkened at least at apical third part); aedeagus: middle emargination between dorsal plates deep, nearly as long as half its length (shallow in the latter, much shorter than half length).
Etymology
The specific name is derived from the Latin ‘ flavus ‘, meaning ‘golden-yellow’ and referring to its body coloration.
Material examined
Holotype CHINA • ♂; Zhejiang, Xitianmushan, Xianrending ; 1500 m a.s.l.; 30 May 1998; H. Wu leg.; IZAS IOZ(E)1123159 .
Paratypes CHINA – Zhejiang • 1 ♂; Anji, Longwangshan ; 490 m a.s.l.; 17 Jul. 1995; H. Wu leg.; IZAS IOZ(E)1659904 • 1 ♀; same locality and collector as for preceding; 770 m a.s.l.; 19 Oct. 1995; IZAS IOZ(E)1659887 • 1 ♂; same locality and collector as for preceding; 21 Oct. 1995; IZAS IOZ(E)1659896 • 1 ♂; Xitianmushan ; 500 m a.s.l.; 21 Jul. 1998; M.S. Zhao leg.; IZAS IOZ(E)225767 • 1 ♂; Xitianmushan, Chanyuansi ; 380 m a.s.l.; 13 Nov. 1998; H. Wu leg.; IZAS IOZ(E)215768 • 1 ♀; same collection data as for preceding; IZAS IOZ(E)215769 • 1 ♂; Tianmushan ; 12 Nov. 1998; M.S. Zhao leg.; IZAS IOZ(E)215770 • 1 ♂; Tianmushan ; 24 Nov. 1998; C.L. Ma leg.; IZAS IOZ(E)215771 • 1 ♂; Qingyuan, Baishanzu ; 1500 m a.s.l.; 23 Oct. 1993; H. Wu leg.; IZAS IOZ(E)215772 .
Description
MEASUREMENTS. Body length (both sexes): 9.0‒14.0 mm (12.0 mm in holotype); width: 2.5‒3.0 mm (2.8 mm in holotype).
Male ( Fig. 2B View Fig )
COLORATION. Body yellow, head and prothorax testaceous, pronotum orange at anterior angles, mouthparts, antennae, tarsi, tibiae and bases of femora black brown. Body densely mixed with short recumbent and slightly longer semi-erect light yellow pubescence.
HEAD. Subquadrate, surface sparsely and finely punctate, each side with smooth and rectangular impression behind antennal socket; eyes strongly protruding, head width across eyes 1.2 times as wide as pronotum; terminal maxillary palpomeres long-triangular, widest at basal third; antennae filiform, extending to two-thirds length of elytra, antennomere II about 2.3 times as long as wide at apices, III about 1.7 times as long as II, IV longest, XI slightly longer than X, pointed at apex.
PRONOTUM. Subquadrate, about 1.1 times as long as wide, anterior margin nearly straight, anterior angles roundly truncate, lateral margins slightly sinuate, posterior margin slightly sinuate, posterior angles moderately sharp and protruding, disc strongly convex on posterolateral parts, surface finely and densely punctate.
ELYTRA. Moderately dilated posteriorly, about 3.6 times as long as humeral width, 5.1 times as long as pronotum, surface densely and finely punctate, with hardly indicated longitudinal costae.
AEDEAGUS ( Fig. 4D‒F View Fig ). Strongly swollen dorsally at basal part, nearly parallel-sided in apical part; basal piece nearly as long as dorsal plate of each paramere, with a large, bifurcate conjoint middle nodule at base of ventral side; ventral processes of parameres nearly parallel to each other, short and slightly narrowed apically, bent dorsally in lateral view; dorsal plate slightly longer than ventral process, abruptly narrowed in middle, near to each other at basal part, acute at apex and folded ventrally; apical part of laterophyses depressed and separate from one another, apex acute and not reaching middle emargination between dorsal plates.
Female
Similar to male, but stouter, eyes less protruding; antennae shorter, reaching elytral mid-length, pronotum wider, nearly as wide as long.
ABDOMINAL STERNITE VIII ( Fig. 8E View Fig ). Moderately narrowed posteriorly, latero-apical angles widely rounded, posterior margin widely and rectangularly emarginate in middle and truncate on both sides, behind notch with membrane which sclerotised and triangularly bilobed at apex and present with traverse-triangular sclerite at center and small rounded sclerite on each side.
INTERNAL ORGAN OF REPRODUCTIVE SYSTEM ( Fig. 7A View Fig ). Vagina stout, with median oviduct situated at ventroapical part, diverticulum and spermathecal duct arising from apex; diverticulum moderately long, about 0.16 times body length, evenly thinned apically, slender tube-shaped and spiral; spermathecal duct longer than diverticulum; spermatheca slender tube-shaped and spiral, obviously thinner than spermathecal duct and much longer than diverticulum, with basal part extended into short tube, where accessory gland opening. Accessory gland thin and much shorter than spermatheca.
Distribution
China (Zhejiang).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.