Strongylogaster macula

Strongylogaster macula (Klug, 1817)

(Figs. 2, 10, 14)

Material examined. CZECH REPUBLIC: BOHEMIA bor.: Jizerské hory PLA: Rybí loučky NR (5158), 5.–14.v.2003, 1 spec., Vonička lgt. (MT); Josefův Důl, Jedlová brook (5257), 670 m a.s.l., 19.–30.v.2005, 3 spec., P. Vonička lgt (MT); České Švýcarsko NP: Bílý potok brook (5052), 23.v.2006, 1 spec., J. Macek lgt. (MT); ‘ U Eustacha’ forest (5052), 2.vi.2008, 1 spec., M. Trýzna lgt. (MT); Brtnický potok brook (5052), 18.v.2004, 1 spec., J. Macek lgt. (MT); Vlčí potok brook (5052), 23.v.2006, 1 spec., M. Trýzna lgt. (MT); Pryskyřičný důl gorge (5052), 22.v.2006, 2 spec. (MT); Limberk (5052), 22.v.2006, 2 spec. (MT), 25.v.2007, 2 spec., all M.Trýzna lgt. BOHEMIA mer.: Šumava NP: Nová Pec env., Smrčina Mt. (7429), 1200 m a.s.l., 26.vi.2007, 8 spec., J. Modlinger lgt. (MT). BOHEMIA occ.: Sokolov distr.: Kynšperk nad Ohří (5841), 23.v.2006, 1 spec., J. Macek lgt.(MT); Počerny (5742), 12.v.2005, 1 spec., J. Macek lgt. (MT); Bukovany (5841), 23.v.2006, 1 spec., J. Macek lgt.(MT); Horní Nivy (5741), 10.vi.2004, 1 spec., J. Macek lgt. (MT); Svatava (5841), 19.v.2003, 1 spec., J. Macek lgt.(MT). BOHEMIA or.: Orlické hory PLA: Bukačka NR (5664), 26.iii.2007, ex larva on Athyrium, J. Macek lgt; Trčkovská louka NR (5664), 15.–31.v.1997, 1 spec., J. Hájek lgt. (MT); Litice nad Orlicí, Litický oblouk meander (5964), 27.iv.–31.v.1997, 1 spec., J. Hájek lgt. (MT). Železné hory PLA: Polom NR (6160), 12.vi.1997, 1 spec., F.Bárta lgt. (MT); Krkanka NR (6160), 2.vi.2004, 1 spec., F. Bárta lgt. (MT); Slávická obora game preserve (6160), 31.v.2006, 2 spec., F. Bárta lgt. (MT); Hubský pond (6160), 12.v.2000, F. Bárta lgt.; Včelákov (6161), 4.vi.2006, 3 spec., F. Bárta lgt. (MT). Králický Sněžník NNR, prameny Moravy springs (5866), 17.vi.2003, 1 spec., P.Chvojka lgt. (MT). MORAVIA mer.: Bílé Karpaty PLA: Velká Javořina Mt., Hubertka hunting-lodge (7171), 19.v.2006, 1 spec., J. Macek lgt. (MT); all J. Macek det. (NMPC).

Notes on identification. MUCHE (1969a) provided a detailed description of the adults. This species differs from the similar S. baikalensis by an extensive colour pattern on the abdomen, with orange-yellow marks extended laterally and thus merging with yellow spots on laterotergites; the abdomen of males is mostly orange yellow. Male genitalia as in Fig. 14. The larva was described by LORENZ & KRAUS (1957). It differs from the larva of S. baikalensis by a uniformly green ground colour without mottling. The host plant in Central Europe is also different (see below).

Bionomics. Univoltine. Flight period from late April to mid June; larval period from May to June. Host plants: Dryopteris (= Aspidium) spp., Dryopteris carthusiana, D. dilatata, Polystichum (Dryopteridaceae), Athyrium filix-femina (Woodsiaceae), Pteridium aquilinum (Dennstaedtiaceae) (TAEGER et al. 1998) and Arachnoides miqueliana (Dryopteridaceae) (NAITO 1996). I collected the larvae exclusively on A. filix-femina.

Distribution. Holarctic Region (Central and Northern Europe, Siberia, China, Japan, Korea, North America) (NAITO 1996). Scattered occurrence in the Czech Republic from uplands to highlands.