Rhoptromeris strobigena Nordlander & Grijpma, 1991

Costa Baião, Guilherme & Forshage, Mattias, 2018, Revision of the West Palaearctic species of Rhoptromeris Förster, 1869 (Hymenoptera: Figitidae: Eucoilinae), Journal of Natural History (J. Nat. Hist.) 52 (17 - 20), pp. 1201-1224 : 1221-1222

Rhoptromeris strobigena Nordlander & Grijpma, 1991

( Figure 5e,f )

Diagnosis

Most similar to R. koponeni , with which it shares the pronotal fovea fused into a continuous furrow, large compound eyes and broad wings. It can be distinguished by the antennae, shorter on females and with shorter flagellomeres on males, as well as by the more strongly humped mesoscutum and the shorter marginal cell with vein Rs longer than 2r (veins subequal in R. koponeni ).

Redescription

Compound eyes relatively large. Male antennae elongate, F1 and F2 lighter than remaining flagellomeres. Female antennae short, pre club flagellomeres light brown to brown, club darker, distinct, 6-segmented. Pronotal fovea fused medially forming a transverse groove. Dorsal scutellar surface costulate, scutellar plate broad. Anteroventral cavity of metapleura present, posterior incision of metapleura absent. Wings relatively broad, marginal with vein Rs longer than 2r.

Distribution

Widespread throughout Europe. Records listed here follow Fauna Europaea and Nordlander and Grijpma (1991), with additions by the authors. EUROPE: Finland, France, Italy, Poland, Spain, Sweden, The Netherlands.

Biology

Rhoptromeris strobigena has been reared from puparia of Gaurax and Hapleginella spp. ( Diptera : Chloropidae ) collected from cones of Abies procera , Larix decidua and Larix kaempferi ( Nordlander & Grijpma, 1991) . The biology and courtship behaviour of the species are discussed by Nordlander and Grijpma (1991).

Figures

Figure 5. Habitus of Rhoptromeris heptoma (a: female, b: male), Rhoptromeris villosa (c: female, d: male), Rhoptromeris strobigena (e: female, f: male), Rhoptromeris nigriventris (g: female, h: male) and Rhoptromeris rufiventris (i: female).