Lathrobium

Anlaş, Sinan, 2021, On the microphthalmous Lathrobium Gravenhorst species of Turkey II. Two new species, a new synonymy, and an updated key to Turkish species (Coleoptera: Staphylinidae: Paederinae), Zootaxa 5052 (1), pp. 117-127 : 126

Key to the microphthalmous Lathrobium species of Turkey

The keys to Turkish microphthalmous species in Assing (2001, 2007) and Anlaş (2018) are modified as follows:

1. Eyes strongly reduced, without ommatidia................................................................. 2

- Eyes weakly reduced, with> 30 ommatidia................................................................. 4

2. Eyes completely reduced, without ommatidia or pigmentation; aedeagus almost symmetrical ( Assing, 2001: figs 30−36).................................................................................. L. brignolii Bordoni, 1980

- Eyes barely visible in dorsal view, without distinct ommatidia, but with pigmentation; aedeagus strongly asymmetrical... 3.

3. Head with pronounced microreticulation; pronotum narrower in relation to head; aedeagus smaller, 0.60–0.65 mm ( Assing, 2007: figs 1−12)................................................................. L. distortum Assing, 2007

- Head with shallow microreticulation; pronotum broader in relation to head; aedeagus larger, approximately 0.9 mm ( Assing, 2007: figs 13−22)................................................................. L. deforme Assing, 2007

4. Micro-pubescence on median posterior area of female sternum VIII absent; area with modified dark setae of male sternum VII confined to posterior median emargination; apical sclerotized structure of internal sac of the aedeagus shaped like a spoon apically in lateral view ( Figs 1-10 )............................................................ L. kacari sp. n.

- Micro-pubescence on median posterior area of female sternum VIII present; area with modified dark setae of male sternum VII extending further anteriad.............................................................................. 5.

5. Apical sclerotized structure of internal sac in the aedeagus shaped like a hook or a barb in lateral view................. 6.

- Apical sclerotized structure of internal sac in the aedeagus shaped like a straight spine or protruding as two parts in lateral view............................................................................................... 7.

6. Male sternum VIII with pubescence present along median line, with slightly smaller apical emargination; apical sclerotized structure of internal sac of the aedeagus shaped like a barb in lateral view ( Assing, 2001: figs 17−21; Anlaş, 2018: figs. 18−24)........................................................................ L. uncinatum Assing, 2001

- Male sternum VIII without pubescence along median line, with larger apical emargination; apical sclerotized structure of internal sac in the aedeagus shaped like a hook in lateral view ( Assing, 2001: figs 8−16; Anlaş, 2018: figs. 11−17).................................................................................. L. bodemeyeri Bernhauer, 1903

7. Lighter colouration of the forebody; aedeagus smaller (0.9 mm long); apical sclerotized structure of internal sac of the aedeagus shaped like a straight spine in lateral view ( Anlaş, 2018: figs. 1−10)........................... L. newtoni Anlaş, 2018

- Darker colouration of the forebody; aedeagus larger (1.15−1.20 mm long); apical sclerotized structure of internal sac of the aedeagus protruding as two parts in lateral view ( Figs. 10-18 )....................................... L. celiki sp. n.

Figures

FIGURES 1–9. Lathrobium kacari sp. n. 1—habitus; 2—forebody; 3—male sternite VII; 4—male sternite VIII; 5—female tergite VIII; 6—female sternite VIII; 7, 8—aedeagus in lateral view; 9—aedeagus in ventral view. Scale bars: 1.0 mm (Figs. 1−2); 0.2 mm (Figs. 3−9).

FIGURES 10–18. Lathrobium celiki sp. n. 10—habitus; 11—forebody; 12—male sternite VII; 13—male sternite VIII; 14— female tergite VIII; 15—female sternite VIII; 16, 17—aedeagus in lateral view; 18—aedeagus in ventral view. Scale bars: 1.0 mm (Figs. 10−11); 0.2 mm (Figs. 12−18).