Drepasiagonusa angulata, Assing, 2018
publication ID |
https://doi.org/ 10.5281/zenodo.3985285 |
DOI |
https://doi.org/10.5281/zenodo.4330499 |
persistent identifier |
https://treatment.plazi.org/id/03D2772D-FFCF-7B2A-FF76-C3DCFE7CFBF6 |
treatment provided by |
Valdenar |
scientific name |
Drepasiagonusa angulata |
status |
sp. nov. |
Drepasiagonusa angulata View in CoL nov.sp. ( Figs 22-32 View Figs 22-32 )
T y p e m a t e r i a l: Holotype ♂: " CHINA: Qinghai Prov. [CH11-19], road 301 km 180, 43 km ESE Men Yuan , 37°09'32.6''N, 102°02'06.0''E, 2704 m, creek valley with Picea, Salix, Populus, Betula, litter and moss sifted, 5.VII.2011, leg. M. Schülke / Holotypus ♂ Drepasiagonusa angulata View in CoL sp. n., det. V. Assing 2018" (MNB) GoogleMaps . Paratypes: 1♂, 1♀: same data as holotype (MNB, cAss) GoogleMaps ; 1♀: " CHINA: Gansu Prov. [CH11-13b], Lenglong Ling Mts., 80 km NNW Honggu, 37°03'47.0''N, 102°39'32.6''E, 3439 m, alpine pasture with Rhododendron and Azalea , litter sifted, 1.VII.2011, leg. M. Schülke " (MNB); GoogleMaps 2♀♀: " CHINA: Qinghai Prov. [CH11-11], Lang Shi Dang Jing Qu ( Park ), 75 km NW Honggu, 2896 m, 36°54'08.8''N, 102°21'16.9''E, creek valley on overgrown scree, Populus and Betula forest , litter sifted between rocks, 28.VI.2011, leg. M. Schülke (MNB, cAss) GoogleMaps .
E t y m o l o g y: The specific epithet (Latin, adjective) alludes to the angled ventral process of the aedeagus (lateral view).
D e s c r i p t i o n: Body length 2.9-3.6 mm; length of forebody 1.4-1.7 mm. Habitus as in Fig. 22 View Figs 22-32 . Coloration: body black with the elytra usually slightly paler (dark-brown to blackish-brown); legs dark-brown with the tarsi dark-yellowish to pale-brown; antennae dark-brown to blackish-brown with the basal 2-3 antennomeres dark-yellowish to palebrown; maxillary palpi brown to dark-brown with the terminal palpomere yellowish.
Head ( Fig. 23 View Figs 22-32 ) 1.06-1.09 times as broad as long, slightly wedge-shaped (i.e., slightly dilated posteriad); punctation rather dense and very fine, visible only at higher magnification; interstices with pronounced microreticulation and rather matt. Eyes moderately convex and slightly shorter than postocular region in dorsal view. Antenna ( Fig. 24 View Figs 22-32 ) 0.8- 0.9 mm long; antennomere IV approximately as long as broad or weakly oblong; antennomeres V-X weakly transverse and gradually, weakly increasing in width, X approximately 1.5 times as broad as long.
Pronotum ( Fig. 23 View Figs 22-32 ) 1.30-1.35 times as broad as long and 1.20-1.25 times as broad as head, broadest in, or anterior to middle; punctation and microsculpture similar to those of head.
Elytra ( Fig. 23 View Figs 22-32 ) approximately as long as pronotum; punctation dense, much more distinct than that of head and pronotum, but somewhat ill-defined; interstices with shallow microsculpture. Hind wings fully developed. Metatarsomere I approximately as long as the combined length of metatarsomeres III and IV.
Abdomen ( Fig. 25 View Figs 22-32 ) as broad as, or slightly narrower than elytra; tergites III-V with moderately deep anterior impressions, tergite VI without anterior impression; punctation fine and rather dense on tergites III-VI, somewhat sparser on tergite VII; interstices with shallow microreticulation; posterior margin of tergite VII with palisade fringe; posterior margin of tergite VIII truncate or weakly concave in the middle ( Fig. 26 View Figs 22-32 ).
♂: posterior margin of sternite VIII convexly produced in the middle ( Fig. 27 View Figs 22-32 ); median lobe of aedeagus ( Figs 28-29 View Figs 22-32 ) approximately 0.4 mm long; ventral process somewhat angled in lateral view.
♀: sternite VIII ( Fig. 30 View Figs 22-32 ) with convex posterior margin; spermatheca ( Figs 31-32 View Figs 22-32 ) with long and nearly straight proximal portion.
C o m p a r a t i v e n o t e s: In external characters (coloration, habitus, size, punctation, microsculpture), D. angulata is similar to D. tibetica . It differs from this species by usually slightly paler elytra, a more transverse pronotum, and particularly by the shape of the median lobe of the aedeagus (lateral view).
D i s t r i b u t i o n a n d n a t u r a l h i s t o r y: The type specimens were collected in three localities in Qinghai and Gansu provinces. They were sifted from litter and moss in forests with birch and poplar and in an alpine pasture with rhododendron at altitudes of 2700-3340 m.
T |
Tavera, Department of Geology and Geophysics |
V |
Royal British Columbia Museum - Herbarium |
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.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |