Metrotyphlus 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

publication ID

https://doi.org/ 10.5281/zenodo.3738343

DOI

https://doi.org/10.5281/zenodo.3811303

persistent identifier

https://treatment.plazi.org/id/039B879B-FFE7-FFB5-DACC-FDE7FC56FA64

treatment provided by

Valdenar

scientific name

Metrotyphlus samothracicus
status

 

Metrotyphlus (Agnotyphlus) samothracicus View in CoL 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 .

T

Tavera, Department of Geology and Geophysics

V

Royal British Columbia Museum - Herbarium

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