Terrilimosina corrivalis ( Villeneuve, 1918 )

Roháček, Jindřich, 2012, Wing polymorphism in European species of Sphaeroceridae (Diptera), Acta Entomologica Musei Nationalis Pragae 52 (2), pp. 535-558 : 548-549

8. Terrilimosina corrivalis ( Villeneuve, 1918)

( Figs. 35–37 )

Material examined. 80 specimens (44 JJ 36 ♀♀, with only l J macropterous, 2 JJ 2 ♀♀ submacropterous, others slightly to strongly brachypterous) from Czech Republic, Slovakia, Ukraine – localities listed by ROHÁČEK (1975c, 1983, 1984, 1994b, 1995) and ROHÁČEK & BARTÁK (2001) – all as Limosina or Terrilimosina sudetica and by ROHÁČEK (2001, 2009a). Additional localities: CZECH REPUBLIC: MORAVIA: Hrubý Jeseník Mts.– Velká kotlina glacial cirque ( V. Kavalcová leg.). SLOVAKIA: Velká Fatra Mts. – Rakša res., Malá Fatra Mts. – Šútovská dolina, Nízke Tatry Mts. – Donovaly 3 km E, Vysoké Tatry Mts – Popradské pleso (J. Roháček leg.). ROMANIA: Banat, Sfânta Elena – Kulhavá skála rock, at Vranovec cave, sifting decayed leaves by stream, 1.vi.2008, 1 J (f. macroptera) (J. Roháček leg.).

A rather poorly known species. Originally described as slightly to distinctly brachypterous ( VILLENEUVE 1918; ROHÁČEK 1975c – under the synonymous name Limosina sudetica Roháček, 1975 ), later the submacropterous form was recorded (ROHÁČEK 1983, as T. sudetica ) and recently more strongly brachypterous ( Fig. 37 ) and almost fully winged specimens ( Fig. 35 ) were found. Thus, its wing polymorphism with prevailing brachypterous form and continual transition to rare macropterous form seems to be similar to that of Spelobia pseudonivalis . Venal mutants seem to be rather rare in the brachypterous form of T. corrivalis – only two specimens (1J 1 ♀) with posterior cross-vein lost were found in the Hrubý Jeseník Mts. ( Czech Republic). Terrilimosina corrivalis is a terricolous species associated with leaf-litter, moss and other decayed vegetation in mountain forests of Central Europe; hitherto it has only been recorded from Switzerland, Germany, Czech Republic, Slovakia, and Western Ukraine (ROHÁČEK et al. 2001). It is newly recorded from Romania (new southernmost distribution limit).

Figures

Figs. 35–37. Terrilimosina corrivalis (Villeneuve, 1918), male wings. 35 – almost macropterous (Romania: Banat, Sfânta Elena – Kulhavá skála); 36 – usual brachypterous (Slovakia: Bukovské vrchy Mts.– Stužica res.); 37 – strongly brachypterous (Slovakia: Poľana Mts.– Hrončecký Grúň res.). Scale: 0.5 mm. Photo by J. Roháček.