Lathrobium (Lathrobium) celiki sp. n.

(Figs. 10−18; Map 1)

urn:lsid:zoobank.org:act: 1F5801B7-4423-4DEA-8F21-AEC5154DE128

Type material. Holotype: Turkey: ♂, “TR. Amasya province, Hamamözü, Tekçam 1 km SE, 1562 m, 40°42’50’’N, 35°06’12’’E, 27.IV.2021, leg. Anlaş, Kacar & Çelik. / Holotypus ♂, Lathrobium (Lathrobium) celiki sp. n. det. S. Anlaş 2021” (AZMM) . Paratypes: 1♂, 2♀, same data as holotype (AZMM) .

Description. Habitus as in Figure 10. Body 5.7−5.9 mm long. Colouration: forebody uniformly reddish brown, head and pronotum slightly darker than elytra, abdominal segments III–VI blackish, abdominal segments VII–X reddish brown; appendages somewhat lighter than body.

In general appearance similar to L. kacari, but it can be distinguished as follows: colouration of body darker than L. kacari; head approximately 1.05 times as long as wide (Figs. 10−11), punctation slightly denser and much more distinct than that of L. kacari, antennae 1.88−1.94 mm long; pronotum longer than wide, approximately 1.20−1.25 times as long as wide, punctation slightly denser and much more distinct than that of L. kacari (Figs. 10−11); elytra broader than pronotum, 1.17−1.24 times as wide as pronotum (Figs. 10−11); abdomen wider than elytra (Fig. 10), approximately 1.15 times as wide as elytra.

♂: in general appearance similar to sternite VII and sternite VIII of L. kacari but sternite VII with emargination slightly smaller and region with modified setae extending further anteriad (Fig. 12); posterior margin of sternite VIII with triangular median emargination slightly smaller (Fig. 13). Aedeagus larger than that of L. kacari (Figs. 16−18), approximately 1.15−1.20 mm long, ventral process longer, basally broader and increasingly narrowed apically in ventral view; apical sclerotized structure of internal sac in lateral view protruding in two parts apically and basally curved, in ventral view oblique oval shaped (Figs. 7−8).

♀: in general appearance very similar to tergite VIII, sternite VIII, tergite IX and tergite X of L. kacari; with only very few differences in tergite VIII and sternite VIII (Figs. 14−15); sternite VIII increasingly narrowed, with convex projection, and fine and dense micro-pubescence in median posterior area (Fig. 15).

Comparative notes. This new species is distinguished from other congeners in Turkey particularly by the distinctive shape of the sclerotized structure of internal sac, and also the different shape of the apex of the ventral process of the aedeagus in both ventral and lateral view (see key to the microphthalmous Lathrobium species of Turkey).

Etymology. The species is dedicated to Mutlu Çelik, Manisa, who collected some of the type specimens of this new species.

Distribution and bionomics. The species was collected at only one locality in Amasya province in central northern Anatolia. The type specimens were collected under stones in grassland at an altitude of about 1560 m.