Nebria (Epinebriola) impunctata, C.Huber & J.Schmidt, 2017

Huber, Charles & Schmidt, Joachim, 2017, Notes on the Nebria subgenus Epinebriola K. DANIEL, 1904 with the description of Barbonebriola subgen. nov. and 13 new species from the Himalaya-Tibet orogen (Coleoptera, Carabidae, Nebriini), Contributions to Natural History 36, pp. 1-85 : 45-48

publication ID	https://doi.org/ 10.5169/seals-787049
DOI	https://doi.org/10.5281/zenodo.6315666
persistent identifier	https://treatment.plazi.org/id/03948799-FFF7-FFEF-FF41-FCD2FE06FC89
treatment provided by	Carolina
scientific name	Nebria (Epinebriola) impunctata
status	sp. nov.

Treatment

Nebria (Epinebriola) impunctata View in CoL sp. nov. ( Fig. 23 View Fig )

Holotype ♂: Nepal, Ganesh Himal , Jaisuli Kund env. , 4300–4500 m, 13.–16.6. 2000, leg. Iman Ghalé, Santos Tamang, Ram, Santa & Santé Gurung ( cSCHM).

Paratypes: 4 ♂, 5 ♀, same data ( NMBE, cSCHM) ; 1 ♂, Nepal, Ganesh Himal , Jaisuli Kund base camp , 4100 m, 14.6.2000, leg. Iman Ghalé, Santos Tamang, Ram, Santa & Santé Gurung ( cSCHM) .

Body length 10–11 mm. Colour black, mandibulae and appendages of head piceous. Basal antennomere darkened. Femura black, trochanters lightened, tibiae and knees dark brown, tarsi brown.

Head with a shallow transverse impression behind the prominent eyes. Labrum with anterior margin straight, bearing six setae. Apical margin of clypeus straight. One supraorbital seta, rarely asymmetrically bisetose. Longitudinal supraorbital furrows in a shallow impression. Vertex impunctate, distinctly transversally wrinkled. Antennae long and slender extending to the middle of the elytra. Antennal scape elongate, a little longer than the eye's diameter, basally narrowed, cylindrical apically, with one dorsal seta. 2 nd antennomere with one seta ventroapically. Maxillary stipes normal, laterally with 7–8 long setae ( Figs 2 View Fig , 4 View Fig ). Characters only visible on SEM micrograph: Cuticle of the stipes only with a few cone-shaped campaniform sensilla but without pores, and the stipal setae long and finely acuminate). Penultimate labial palpomere trisetose. Ligula long, spiny, with two lateral setae. Mentum with bifid medial tooth. Submentum with a row of 11–15 long setae. Microreticulation of the head isodiametric.

Pronotum transverse, distinctly convex, narrowed basally. Ratio length/ width of the pronotum = 1.38. Lateral margin straight in basal half, widely rounded to the anterior angles, convexly narrowed to the posterior angle, no concave sinuation in front of the posterior angles ( Fig. 31D View Fig ). Lateral explanation very narrow with a conspicuous groove, broadened basally. Lateral margin basally blade-like, obliquely or vertically upturned. Posterior angles acute, projected posteriorly. Anterior angles wide, rounded, weakly protruding. Basal margin bisinuate, before the posterior angle with a distinct incision towards the basal fovea. Pronotal disc weakly convex. Basal fovea deep, anterior and posterior transverse sulci deep, median line shallow. Basal fovea, anterior and posterior transverse sulci sparsely and faintly punctate or almost impunctate; the narrow lateral groove impunctate. Apical margination of the pronotum restricted to lateral one-fourths, merges with a faint ridge at the anterior angle; the ridge continues along the lateral groove to the lateral seta. Base of the pronotum not margined. Basolateral seta absent. One midlateral seta in the apical half of the pronotum, rarely with two setae; midlateral setae inserted in distinct grooves at the inside of the slightly upturned margin. Microreticulation of the pronotum isodiametric, impunctate on disc. Proepisternum smooth. Prosternal process elongate, unmargined, not flattened, rounded apically.

Elytra short, ratio length/width of the elytra = 1.50. Elytral silhouette regularly ovoid, compact, widest in or slightly behind the middle; no subapical sinuation. Elytral apex acutely rounded. Basal margination straight, smoothly merged, or joined at an obtuse angle, with the lateral margination. Humeral carina faintly developed. Striae faint, impunctate. Striae obliterate towards the apex; striae 7 and 8 scarcely visible. Intervals rather convex, more convex on disc and towards the basal margin; interval 3 with 1–4 long setae adjoining stria 3. Scutellar seta present, rarely two setae. Microreticulation oblong. Mesepisterna smooth. Metepisterna 1.6 times as long as wide, smooth. Metacoxa with 2–4 basal and one apical setae. Hindwings present as a strap-like vestige.

Sternum 3 medially asetose. Sterna 4–6 each with 3–5 very long posterior paramedial setae, which extend the sternal length; Anal sternum with 2–4 paramedial setae in males and in females. Sterna 4–5 with a faint longitudinal posterolateral impression of half of the sternit length.

Legs long and slender. All tarsi dorsally glabrous. Protarsus of male with tarsomeres 1–3 distinctly broadened, ventrally with pads of adhesive setae. Ventroapical tooth of the metatarsomere 4 long, markedly projected, longer than half of the dorsal tarsomere lenght. Meso- and metatarsomeres 2–4 ventroapically with long setae. All tarsomeres 5 ventrally with two rows of 4–6 short setae. Metatarsomere 5 distinctly longer than the metatarsomeres 3+4.

Male genitalia: Edeagus ( Fig. 20D View Fig ): Basal part of the median lobe wide, with prominent triangular basolateral lobes. Mid-shaft thin, strongly curved at base, moderately curved and progressively narrowed to the apex. Apex short, trianglular, faintly deflected to the left. Mid-shaft of the endophallus densely packed with short setae.

Female genitalia: Gonocoxa ( Fig. 10D View Fig ): Gonocoxite 2 stocky, triangular, only half the length of gonocoxite 1. Apex broadly rounded, dorsally arcuate, dorsally grooved. Ventral preapical insertion furrow elongate-oval, with two nematiforme setae. Gonocoxites ventrally unjointed and continuously sclerotized, dorsally separated by a membranous area.

Body ratios: hea.w/fro.w = 1.43± 0.020 (1.40–1.47); prm.w/hea.w = 1.33± 0.031 (1.29–1.39); prm.w/prp.w = 1.61±0.048 (1.52–1.69); pra.w/prp.w = 1.14± 0.028 (1.09–1.17); ely.w/prm.w = 1.61±0.038 (1.55–1.68); prm.w/prm.l = 1.38± 0.031 (1.35–1.43); ely.l/ely.w = 1.50±0.038 (1.44–1.54).

Etymology: The specific epithet refers to impunctate striae of the elytra.

Diagnosis: Close to N. montisanimae sp. nov. from the Manaslu Himal. The posterior angles of the pronotum are distinctly and acutely projecting in N. impunctata sp. nov. in contrast to N. montisanimae sp. nov. with the posterior angles not or only faintly protruding. The elytra are less elongate than in N. montisanimae sp. nov.

Distribution ( Fig. 41 View Fig ): Known only from the type locality in the Ganesh Himal in western Central Nepal.

Habitat: Not noted.