Zorochros dilatatus Nasserzadeh & Platia & Parsi & Serri 2018, sp. n.

Zorochros dilatatus Nasserzadeh & Platia sp. n.

(Figs. 3–4, Map 8)

Type locality. 3 km South of Darreshahr, Ilam Province, Iran.

Type material. Holotype ♂ (HMIM): Ilam province, Abdanan to Darreshahr road, 3 km S Darreshahr, 33°06'10"N 47°21'13"E, 810 m, 6.V.2008, leg. Nas. / Nem. / Montreuil. Paratypes: 2 ♂♂, 6 ♀♀ (HMIM): same data as holotype; 2 ♂♂, 10 ♀♀ (HMIM): Hamedan province, S Hamedan, Oshtoran to Karzan road, 1 km NW Karzan, 34°36'24"N 48°19'43"E, 1910 m, 2.VI.2007, leg. Nas. / Zahiri / Mont; 4 ♂♂, 5 ♀♀ (HMIM): Kermanshah province, Javanrood to Tazehabad road, 13 km W Javanrood, Aliabad, 34°47'57"N 46°23'54"E, 1130 m, 29.V.2007, leg. Nas. / Zahiri / Mont.; 5 ♂♂, 18 ♀♀ (HMIM, CPG): Kermanshak province, Kerend to Sarpo-e Zahab road, 22 km W Kerend, 34°21'25"N 46°06'25"E, 1405 m, 24.V.2007, leg. Nas. / Zahiri / Mont; 6 ♂♂, 11 ♀♀ (HMIM, CPG): Kermanshah [province], Sarmast to Eslamabad-e Gharb road, 34 km SE Kerend, Beyg-Rezaii Village, 34°04'26"N 46°21'56"E, 1530 m, 23.V.2007, leg. Nas. / Zahiri / Mont; 4 ♂♂, 18 ♀♀ (HMIM): Lorestan province, 15 km N Oshtorinan, 34°04'38"N 48°36'30"E, 1880 m, 31.V.2007, leg. Nasserzadeh, Zahiri, Montreuil

Diagnosis. A species without yellow spots on elytra and posterior angles of pronotum; pronotum carinated, similar to Z. recellentus Dolin, 1995, distinguished by the slenderer body, elytra proportionally longer than pronotum, longer antennae, finer punctuation of pronotum, distinctly more dilated protibiae in male.

Description. Male: Body piceous black dorsally, shiny; apical third of the first and second antennomeres rufotestaceous, third antennomeres rather rufous; legs rufo-testaceous with darkened coxa and femura, the latter rufotestaceous at distal and proximal ends; covered by short, very fine, whitish pubescence.

Head: frons flat, with semicircular anterior margin, entire surface moderately granulated.

Antennae exceeding apicis of posterior angles of pronotum by one antennomere; slightly serrated from fourth antennomere; second and third longer than wide, equal in length and subequal to first; fourth antennomere slightly longer than third; fourth to six subtriangular; six to tenth triangular, antennomeres two times longer than width; last longer than penultimate, ellipsoidal.

Pronotum 1.1 × wider than the length, widest at middle; convex; sides arcuate, from posterior third narrowing to and distinctly sinuated before the posterior angle, the latter acute, divergent and not carinate; entire surface is punctured-granulated, punctures distributed regularly coarse, granules distributed coarser and denser on the central anterior part of the disk.

Scutellum as long as wide, slightly sinuated at apex, convex and very finely punctured.

Elytra 1.9 × longer than pronotum, apical margin slightly narrower than pronotom at middle/or at widest length; flat on the central part, abruptly sloping at sides; sides parallel from apical base to posterior third, then converging to the apices; eight striae regularly marked, the three lateral ones not complete, interstriae flat and densely punctured.

Tibiae straight, dilated from middle, widest at distal end.

Aedeagus as in Fig. 1 (length 0.75–0.80 mm).

Female: Separated by straight tibia, average body length slightly larger.

Size: Length 2.6–3.5 mm; width 0.8–1.1 mm.

Etymology. The name of species refers to the dilated protibiae in males.

Habitat. River bank, in gravel/under stones.

Climate types. Sub-humid, semi-arid with cool to cold winter and warm to very warm summer.