Geostiba (Tropogastrosipalia) impressiventris, Assing, 2009
publication ID |
https://doi.org/ 10.5281/zenodo.5276563 |
persistent identifier |
https://treatment.plazi.org/id/6D0E87E4-EA10-616C-44F8-F4D5FD83FB43 |
treatment provided by |
Carolina |
scientific name |
Geostiba (Tropogastrosipalia) impressiventris |
status |
sp. nov. |
Geostiba (Tropogastrosipalia) impressiventris View in CoL nov.sp. ( Figs 48-52 View Figs 48-52 )
Holotype Ƌ: " Iran, Prov. Gilan [IR08-25], Siahkal County, Elburz Mts., S-Slope, Deylaman- Barresar road, sifted, 1688 m, 36°51'07.9"N, 49°49'67.3"E [recte: 36°51.079'N, 49°49.673'E], 07.VI.2008, leg. A. Pütz / Holotypus Ƌ Geostiba impressiventris sp.n. det. V. Assing 2009" (cPüt) GoogleMaps . Paratype Ƌ: same data as holotype (cAss).
D e s c r i p t i o n: Small and slender species; body length 2.1-2.7 mm. Habitus as in Fig. 48 View Figs 48-52 . Coloration: head and abdomen, except for the paler apex, blackish; pronotum reddish-brown; elytra yellowish to yellowish-brown; legs yellowish; antennae reddish brown, with antennomeres I-III yellowish.
Head 1.0-1.1 times as long as wide ( Fig. 49 View Figs 48-52 ); punctation extremely fine, barely noticeable; surface with shallow microreticulation. Eyes weakly convex and moderately small, approximately half the length of postocular region in dorsal view.
Pronotum with weakly pronounced sexual dimorphism ( Fig. 49 View Figs 48-52 ), weakly transverse, approximately 1.05 times as wide as long, and approximately 1.2 times as wide as head; punctation as fine as that of head; microreticulation clearly more distinct than that of head.
Elytra with moderately pronounced sexual dimorphism, approximately 0.5 times as long and 1.10-1.15 times as wide as pronotum; punctation more, microsculpture less distinct than that of head and pronotum ( Fig. 49 View Figs 48-52 ).
Abdomen slightly wider than elytra; tergite III apparently with, tergites IV-V without sexual dimorphism; punctation fine and sparse; posterior margin of tergite VII with narrow rudiment of a palisade fringe; posterior margin of tergite VIII weakly convex in both sexes ( Fig. 51 View Figs 48-52 ).
Ƌ (with fully developed secondary sexual characters): pronotum in the middle of posterior margin weakly pointed ( Fig. 49 View Figs 48-52 ); elytra with rather sparse granulose punctation, shallowly and extensively depressed or impressed across both elytra, without sutural carinae or elevations ( Fig. 49 View Figs 48-52 ); abdominal tergite III with rather large median impression of somewhat semicircular shape ( Fig. 48 View Figs 48-52 ); tergite VII with short, apically acute, suberect median process at posterior margin ( Figs 50-51 View Figs 48-52 ); posterior margins of tergite and sternite VIII broadly convex; aedeagus with slender cristal process ( Fig. 52 View Figs 48-52 ).
♀: unknown.
E t y m o l o g y: The specific epithet (Latin, adjective) alludes to the impressed male abdominal tergite III.
C o m p a r a t i v e n o t e s: Geostiba impressiventris is readily distinguished from the other three species of Tropogastrosipalia known from Iran, G. sengleti , G. huberi , and G. sarica , by the small and slender body, the modifications of the male elytra, the characteristic impression on the male abdominal tergite III (a unique autapomorphy distinguishing this species from all other Geostiba !), and by the shape of the cristal process of the aedeagus.
D i s t r i b u t i o n a n d b i o n o m i c s: This species is known only from one locality in Siahkal county, Gilan province, northern Iran, where the two type specimens were sifted at an altitude of almost 1700 m.
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.
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