Lorestania gracilis, Anichtchenko, 2011

Anichtchenko, Alexander, 2011, A new genus and species Lorestania gracilis gen. n., sp. n. from Iran (Coleoptera: Carabidae: Lebiini), Baltic Journal of Coleopterology 11 (2), pp. 197-201 : 198-200

Lorestania gracilis sp. n.

Type material. Holotype: Male - Iran (Lorestan), 50 km N Ardimeshk, 2000 m, Sar Takht, 3-4.V.07, Anichtchenko A. leg. ( ZIN) ; Paratypes: 4 Males, 3 Females - same label data (cAA, MNHN, ZIN) .

Description. Habitus ( Fig. 1). Overall body length 2.5-2.8 mm, width 0.8-1.0 mm. Colour of dorsal side of head and pronotum aeneous. Elytra aeneous-brown. Mandibles reddish brown, except black scrobe. Antennae and palpi almost black, legs and ventral side aeneous-black, except paler trochanters.

Head wide, almost equal to pronotum across eyes; microsculpture consisting of strong isodiametric meshes. Antennae long, length 1.5 mm; second segment with two irregular rows of setae, one row on tip, another in middle of segment; from third segment antennae pubescent. Second supraocular seta located just anterad the posterior margin of eye; subocular setae absent. Labrum hexasetose, one pair of smaller setae in middle, two pair of longer setae anteriolaterally. Ultimate palpomere of labial palpi swollen. Mentum with median tooth ( Fig. 2 ).

Pronotum 1.04-1.1 times as wide as head, 1.26– 1.38 times as wide as long, widest near marginal setae. Anterior angles effaced to faintly marked, posterior angles indistinct; sides bisetose, strongly and almost straightly convergent from lateral seta to base; constriction behind posterior angles inconspicuos; lateral border very narrow; median line very deep, long; basal foveae obsolete; front and basal transverse impression obsolete; base of pronotum strongly lobate ( Fig. 3). Microsculpture of pronotal disc consisting of strong isodiametric meshes. Anterior margin of prosternum with six long setae ( Fig. 5).

Elytra narrow, 1.4-1.5 times longer than wide; flat; widest at apical fourth; sides almost parallel; shoulders square, apex of elytra straightly truncate, sutural and external angle rounded; elytral striae 1-5 wide and moderately deep on the disc, external striae indistinct; odd intervals of elytra with 3-4 extremely tiny, irregularly situated setae. Marginal channel very narrow. Discal pores indistinct. Scutellar pore present. Umbilical series consisting of 10 setigerous pores, four subhumeral, three fairly wide spaced pores in intermediate group, and three in subapical group. Epipleura visible from above in apical part of elytra, enlarged and explanate on angle of elytra. Microsculpture of elytra strong, isodiametric.

Hind wings fully developed.

Abdomenal sternites glabrous, last visible sternite bisetose in males and females. Microsculpture transverse.

Legs rather long, metatarsomere 4 in males narrower then 3th, slightly cordate. Claws smooth. Aedeagus ( Fig. 6), length 0.5 mm. Median lobe of aedeagus moderately broad, median shaft even ly ar cuate, apex elon gate, sligh tly downturned at narrowly rounded apex. Internal sac without apparent spicules or microtrichial patches. Stylomer 1 without lateral apophyse, stylomere 2 big and short, not pointed at apex, without setae ( Fig. 7), as in typical members of subtribe Lionychina .

Distribution and habitat. Known only from the type locality. The specimens were collected on sand and gravel bank of a small river ( Fig. 8 ).

Etymology. The species epithet is derived from the Latin gracilis , referring to the gracefully slender body of the new species.

Figures

Fig. 2. Mouthparts of Lorestania gracilis gen. n., sp. n.

Fig. 8. Habitat of Lorestania gracilis gen. n., sp. n.