Euborellia ornata, Kočárek, 2011

Kočárek, Petr, 2011, Euborellia ornata sp. nov. from Nepal (Dermaptera: Anisolabididae), Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 391-395 : 392-394

Euborellia ornata sp. nov.

( Figs. 1–6 )

Type locality. Nepal, Eastern Region, Koshi Zone, foothills of Mt. Kangchenjunga (locality data specified by S. Bílý (pers. comm. 2010), the collector of type specimens).

Material examined. HOLOTYPE: J, ‘E Nepal, 28.4. / 1988 Hill / S. Bílý leg.// 2000 m [reverse of the label]’ ( NMPC). The specimen is provided with additional printed red label :‘ HOLOTYPUS / Euborellia / ornata sp. n. / det.P. Kočárek 2011 ’. PARATYPE: ♀, ‘E Nepal, 28.4. / 1988 Hill / S. Bílý leg. // 2000 m [reverse of the label] ’ ( NMPC).The specimen is provided with additional printed red label: ‘ PARATYPUS / Euborellia / ornata sp. n. / det. P. Kočárek 2011 ’.

Description. Body blackish brown, shiny; head blackish brown with two pale brown spots between eyes, antennae blackish brown with yellowish antennomeres 1, 2, 10 and 11; pronotum blackish brown with paler sides; legs yellowish brown, femora and tibiae banded with brown; abdominal tergites blackish brown; forceps reddish brown. Cuticle punctured, shiny; tegminae and wings entirely absent. Length without forceps 9.2 mm (J) and 10.4 mm (♀), length of forceps 1.6 mm (J) and 1.9 mm (♀).

Head ( Fig. 1 ) as wide as long, postfrontal and coronal sutures fine but distinct, frons convex, hind margin feebly emarginated in middle. Eyes blackish brown, 0.5 times as long as the length of head behind eyes. Antennae of holotype male with 9 antennomeres, in paratype with 15 antennomeres (both incomplete), conical; antennomere 1 long, narrowed basally, widened terminally, as long as the length of antennomeres 2 and 3 together; antennomere 2 transverse, only slightly longer than wide; antennomere 3 longer than antennomere 4.

Pronotum ( Fig. 1 ) smooth about as long as broad, widened posteriorly; anterior margin nearly straight, lateral margins straight, gently reflexed in middle, posterior margin broadly rounded. Median sulcus fine but distinct. Meso- and metanotum transverse, smooth, former posteriorly truncate and latter broadly emarginate. Sternal plates typical for the genus. Tegmina and wings entirely absent. Legs relatively long compared to other Euborellia , yellow with darker bands on femora and tibiae; femora stout; tibiae clad with thick and fine hairs; hind tarsi with segment 1 almost equal to combined lengths of segments 2 and 3.

Abdomen ( Fig. 1 ) sparsely punctulate, tergites with exception of the ultimate one convex, somewhat widened posteriorly, lateral glandular folds invisible. Tergites 7–9 rugoso-striate at sides and each with a low blunt rugoso-striate lateral longitudinal ridge. Ultimate tergite transverse, sides convex, slightly narrowed posteriorly, slightly depressed medially with visible median longitudinal furrow, lateral longitudinal ridge rugoso-striate, hind margin in middle lightly concave. Penultimate sternite narrowed posteriorly with posterior margin subtruncate ( Fig. 3 ). Pygidium flat. Male forceps with branches subcontiguous and stout at base, gradu- ally tapering apically, almost straight in basal two thirds, both slightly incurved afterwards, apices gently hooked, inner margin finely crenulated, trigonal in basal half above, afterwards depressed. Female forceps with branches contiguous, simple and straight ( Fig. 2 ).

Male genitalia ( Figs. 4, 5, 6 ) typical for Euborellia , with parameres short, slightly longer than broad (3: 2), narrowed apically, external apical angle and margin convex ( Fig. 5 ); end of longer distal lobe quadratic, with dark brown, strongly sclerotized and rounded distal denticulated pad; proximal denticulated pad small and flat, not strongly sclerotized ( Fig. 6 ). Differential diagnosis. Euborellia ornata sp. nov. is an entirely apterous species (i.e. without vestiges of tegmina or wings) and differs from all other apterous species of Euborellia by the peculiar coloration and combination of the following characters: quadratic pronotum; yellow legs with darker bands on femora and tibiae ( Fig. 1 ); and characteristic male genitalia with parameres short, slightly longer than broad (3: 2), with both lateral margins slightly convex; distal lobe quadratic ( Figs. 4, 5 ). Very specific is the shape of the lateral denticulated pads of the longer distal lobe ( Fig. 6 ) with largely prominent, rounded and strongly sclerotized distal denticulated pad, and flat, finely sclerotised proximal pad.

Etymology. The Latin adjective, ornatus, - a, - um, is given in reference to the outstanding coloration of the new species, unusual in Euborellia .

Bionomy. Unknown. Collected on pasture with fragments of forests with Castanopsis and Rhododendron (S. Bílý, pers. comm. 2010).

Distribution. Nepal, Eastern Region, Koshi Zone.

Figures

Figs. 1–6. Euborellia ornata sp. nov. 1 – habitus of male (holotype); 2 – ultimate tergite and foceps of female (paratype); 3 – male penultimate sternite, ventral view; 4 – male genitalia; 5 – left paramere of male genitalia; 6 – left distal lobe of male genitalia.