Oxypoda imminuta, Assing, 2008

Assing, V., 2008, Nine new species and additional records of Staphylinidae from southern Spain, with new synonymies (Insecta: Coleoptera), Linzer biologische Beiträge 40 (2), pp. 1301-1325 : 1321-1322

publication ID	https://doi.org/ 10.5281/zenodo.5430659
persistent identifier	https://treatment.plazi.org/id/572C0518-FFAB-E479-5A86-FCEDFCC9EAAA
treatment provided by	Valdenar
scientific name	Oxypoda imminuta
status	sp. nov.

Treatment

Oxypoda imminuta View in CoL nov.sp. ( Figs 58-60 View Figs 54-63 , 67-70 View Figs 64-75 , Map 4 View Map 4 )

T y p e m a t e r i a l: Holotype: "E - Andalusien, Sierra Nevada, Meybohm 24.2.2000 / N 37°7' W 3°27', westl. Str. zur Veleta, Bachtal, 1600 m / Holotypus Oxypoda imminuta sp.n. det. V. Assing 2008" (cAss) . Paratypes: 1 [slightly teneral]: "E - Andalucía [15], Sierra de los Filabres , S Serón, 1800 m, grassland, 37°15'44"N, 02°30'30"W, 19.III.2008, V. Assing" (cAss) GoogleMaps ; 1: "E - Andalucía [11], W Almeria, Sierra de Gádor , 1720 m, 36°55'20"N, 02°47'53"W, 17.III.2008, C. Andújar & V. Assing" (cAss) GoogleMaps .

D e s c r i p t i o n: Body length 2.8-3.2 mm. Habitus as in Fig. 58 View Figs 54-63 . Coloration: head blackish-brown; pronotum and elytra reddish-brown to dark-brown; abdomen blackishbrown, with the apex yellowish-brown; legs yellowish; antennae dark-brown, with antennomeres I-II paler brown.

Head ( Fig. 59 View Figs 54-63 ) approximately as wide as long or weakly oblong; punctation moderately sparse and fine; interstices with shallow microreticulation; eyes large, but weakly convex, approximately as long as postocular region in dorsal view. Maxillary palpi moderately slender, with the penultimate palpomere approximately 3 times as long as broad. Antennae distinctly incrassate apically; antennomere III shorter than II; IV moderately transverse; VIII-X approximately twice as wide as long; X only slightly longer than IX; XI approximately as long as the combined length of IX and X ( Fig. 60 View Figs 54-63 ).

Pronotum ( Fig. 59 View Figs 54-63 ) 1.20-1.25 times as wide as long and approximately 1.35 times as wide as head, widest slightly behind middle; posterior angles weakly marked; punctation variable, more or less dense and more or less distinct; microsculpture variable, as shallow as that of head.

Elytra approximately 1.05 times as long and 1.2 times as wide as pronotum ( Fig. 59 View Figs 54-63 ); punctation dense and fine; interstices with shallow microsculpture. Hind wings fully developed. Legs short; metatarsus approximately 0.75 times as long as metatibia, the latter only 0.33-0.35 mm long; metatarsomere I somewhat longer than the combined length of II-III, but shorter than the combined length of II-IV.

Abdomen with lateral margins of segments III-VI subparallel, segments VII-VIII weakly tapering; punctation moderately fine and distinct, slightly less dense on posterior than on anterior tergites; microsculpture very shallow, visible only at higher magnification; posterior margin of tergite VII with palisade fringe; tergite VIII with strongly convex posterior margin ( Fig. 67 View Figs 64-75 ).

: posterior margin of sternite VIII strongly convex, but not distinctly pointed in the middle; median lobe of aedeagus of distinctive morphology, ventral process rather long and almost straight (lateral view), apically acute (lateral and ventral view), and at base with lateral carinae ( Figs 68-69 View Figs 64-75 ); internal sac with moderately long and almost straight flagellum, and with short apical sclerotised structures; apical lobe of paramere as in Fig. 70 View Figs 64-75 .

: unknown.

E t y m o l o g y: The name (Latin, adjective: shortened) alludes to the short apical internal structures of the aedeagus.

C o m p a r a t i v e n o t e s: Like O. telifera , O. imminuta is highly similar to O. haemorrhoa , but distinguished by larger eyes, longer elytra, shorter legs with a relatively shorter metatarsus and a shorter metatarsomere I, more pronounced punctation and shallower microsculpture of the abdomen, and by the completely different shape and internal structures of the aedeagus (see Fig. 75 View Figs 64-75 for an illustration of the aedeagus of O. haemorrhoa ). It is separated from similar O. telifera by the distinctly shorter antennae with more transverse antennomeres IV-X, the shallower microsculpture on the whole body, the shorter metatibia and metatarsus, and by the different shape (ventral process apically acute and basally with pronounced lateral carinae; smaller size; crista apicalis less pronounced) and internal structures (apical sclerotised structures much smaller; flagellum almost straight) 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: The new species was collected in the Sierra Nevada, as well as in the adjacent Sierra de los Filabres and Sierra de Gádor (Andalucía) ( Map 4 View Map 4 ) at altitudes of 1600-1800 m. The paratype from the Sierra de los Filabres was sifted from grass roots in a pasture with shrubs, together with the type specimens of Geostiba filabresica (see above). The paratype from the Sierra de Gádor was floated from soil in grassland with shrubs and scattered trees.