Metrotyphlus (Agnotyphlus) samothracicus, Assing, 2019

Assing, Volker, 2019, On the Staphylinidae of the Greek island Samothraki (Insecta Coleoptera), Linzer biologische Beiträge 51 (2), pp. 881-906: 897

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Metrotyphlus (Agnotyphlus) samothracicus


Metrotyphlus (Agnotyphlus) samothracicus   ASSING nov.sp. ( Figs 15-19 View Figs 9-18 View Figs 19-26 , 33)

T y p e m a t e r i a l: Holotype ♂: "GR – Samothraki [27], Therma, 40°29'40''N, 25°36'05''E, 110 m, Platanus forest , soil wash., 12.IV.2019, V. Assing / Holotypus ♂ Metrotyphlus samothracicus   sp.n. det. V. Assing 2019" (cAss). GoogleMaps  

E t y m o l o g y: The specific epithet is an adjective derived from Samothrace.

D e s c r i p t i o n: Body length 1.3 mm; length of forebody 0.5 mm. Habitus as in Fig. 15 View Figs 9-18 . Tarsal formula 2, 2, 2 ( Fig. 19 View Figs 19-26 ). Reliably distinguished from other species of the genus only by the male sexual characters.

♂: sternites III-VIII with shallow, but extensive median impressions; sternite VIII ( Fig. 16 View Figs 9-18 ) weakly oblong and nearly symmetric, posterior margin with a large median excision; aedeagus ( Figs 17-18 View Figs 9-18 ) 0.15 mm long and, except internal structures, symmetric; internal structures of distinctive shapes.

C o m p a r a t i v e n o t e s: Metrotyphlus   COIFFAIT, 1959 previously included twelve species in two subgenera, four in the nominal subgenus and eight in the subgenus Agnotyphlus   COIFFAIT, 1972 (SCHÜLKE & SMETANA 2015). Those assigned to Agnotyphlus   had been recorded from the Alpi Apuane and across the southern Alps southeastwards to Istria ( Croatia). Thus, the record of M. samothracicus   expands the known range of both the genus and the subgenus southeastwards by a distance of more than 1,000 km and suggests that at least Agnotyphlus   is far more widespread and diverse than presently known.

The new species differs from other Agnotyphlus   species by the distinctive male primary and secondary sexual characters, particularly the internal structures of the aedeagus. For illustrations of the previously described species see COIFFAIT (1972) and PACE (1997).

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: Metrotyphlus samothracicus   is most likely endemic to Samothraki. Despite extensive soil washing in numerous localities, only a single male was found. It was collected in the north of the island in a moist Platanus forest at an altitude of 110 m. The locality is illustrated in Fig. 33 View Figs 33-34 .


Tavera, Department of Geology and Geophysics


Royal British Columbia Museum - Herbarium