On the Staphylinidae of the Greek island Samothraki (Insecta Coleoptera) Assing, Volker Linzer biologische Beiträge 2019 2019-12-20 51 2 881 906 8XWXZ Assing 2019 [151,455,1042,1064] Insecta Staphylinidae Cephennium GBIF,CoL Animalia Coleoptera 18 899 Arthropoda species samothracicum  E t y m o l o g y: The name (adjective) is derived from Samothrace. D e s c r i p t i o n: Body length 0.93 mm. Habitus as in Fig. 20. Coloration palereddish with yellowish legs and palpi. Whole body with extremely fine punctation barely visible even at a magnification of 100 x and without microsculpture. Pronotum and elytra relatively weakly convex in cross-section. Anophthalmous, without traces of eyes. Antenna 0.4 mmlong, with antennomeres IX-XI forming a distinct club; antennomeres IX-X strongly transverse and XI barely 1.5 times as long as broad. Pronotum weakly transverse, barely 1.15 times as broad as long and 1.75 times as broad as head, broadest anteriorly and weakly tapering posteriad; lateral margins nearly straight. Elytra slender, 1.8 times as long as pronotum and 1.5 times as long as combined width, with narrow, but distinct humeral keel of approximately one-third the length of elytron. All tibiae distinctly dilated in apical two thirds. ♂: aedeagus ( Figs 21-22) 0.21 mmlong, with broadly house-shaped ventral process in ventral view; internal sac with three pairs of sclerotized spines of distinctive shapes. C o m p a r a t i v e n o t e s: Since the subgeneric concept currently in use is problematic (JALOSZYŃSKI & STEVANOVIĆ 2015),  C. samothracicumis not assigned to any of the six subgenera represented in the Palaearctic region.  CephenniumMÜLLER & KUNZE, 1822 is represented in the Greek mainland and the Aegean islands by numerous species, many of them anophthalmous or subanophthalmous and locally endemic, but mostly undescribed (MEYBOHM pers. comm.). The new species is distinguished from the four described species from the Greek mainland and Corfu currently assigned to the subgenus PhenneciumNORMAND, 1912 (  C. granulumREITTER, 1884, C. ionicumHOLDHAUS, 1908,  C. lesinaeREITTER, 1881,  C. puncticolleREITTER, 1885), as well as from other described and undescribed species of the Aegean islands and West Turkeyby the morphology of the aedeagus (short parameres; shapes of the ventral process and of the internal structures). D i s t r i b u t i o n a n d n a t u r a l h i s t o r y: This anophthalmous and most likely island-endemic species was found in the northeast of Samothraki. The holotypewas sifted from litter and roots between rocks in the shade of large rocks and beneath an old oak tree at an altitude of 900 m( Fig. 35). 2594760103 2019-04-11 T, V 900 40.460835 Ano Meria 19 25.642221 Samothraki 18 899 903 902 holotype