Strongylogaster filicis (Klug, 1817)

Macek, Jan, 2010, Taxonomy, distribution and biology of selected European Dinax, Strongylogaster and Taxonus species (Hymenoptera: Symphyta), Acta Entomologica Musei Nationalis Pragae 50 (1), pp. 253-271 : 263

Strongylogaster filicis (Klug, 1817)

( Fig. 5 )

Material examined. CZECH REPUBLIC: BOHEMIA bor.: Bělá u Děčína (5251), 14.vi.1957, 2 spec., Z. Bouček lgt .; České Švýcarsko NP: Vlčí potok brook (5052), 23.v.2006, 1 spec., M. Trýzna lgt. ( MT) ; all J. Macek det. ( NMPC) .

Notes on identification. MUCHE (1969a) provided a diagnosis for adults. They are easily distinguished from the other Strongylogaster species by the short ovipositor sheaths, which are swollen at middle and not divided and lobed at apex, and the presence of a crossvein in the anal cell of the fore wing.

Bionomics. Univoltine. Flight period from May to June. Host plant: Pteridium aquilinum (Dennstaedtiaceae) ( LACOURT 1999).

Distribution. Palaearctic Region (Europe, Siberia, Korea, Japan) ( LACOURT 1999); distribution in central Europe: Austria, Czech Republic, Germany ( TAEGER & BLANK 2008). Very rare in the Czech Republic, recorded only twice from northern Bohemia ( MACEK 2006).

Figures

Figs. 2–7. Strongylogaster Dahlbom, 1835, adults: 2 – S. macula (Klug, 1817); 3 – S. baikalensis Naito, 1990; 4 – S. mixta (Klug, 1817); 5 – S. filicis (Klug, 1817); 6 – S. multifasciata (Geoffroy, 1785); 7 – S. xanthocera (Stephens, 1835). Scale: 10 mm.