Euceros rufocinctus (ASHMEAD, 1906)

Riedel, Matthias, 2025, Notes on some Asian species of Euceros GRAVENHORST, with description of a new species (Hymenoptera, Ichneumonidae, Eucerotinae), Linzer biologische Beiträge 57 (1), pp. 343-349 : 348

Euceros rufocinctus (ASHMEAD, 1906) (figs 6-7)

M a t e r i a l e x a m i n e d China, Jilin province, Da Gu Jia , 20 km SEE Jilin, 43.4733°N 126.4648°E, 350 m, 1♀ 21.VI.2017, leg. E. Jendek & O. Šauša (Linz) ; Laos, Hua Phan Prov., Ban Saleui , Phon-Pan-Mt., 20°13'30 " N 103°59'26 " E, 1350-1900 m, 1♀ 19-21.IV.2016, leg. C .

Holzschuh & natives (Linz). D e s c r i p t i o n: Body length 7.0- 7.5 mm. Flagellum with 30-31 segments, 1st

flagellar segment 4.2-4.8× as long as wide. Distance between lateral ocellus and eye 1.8- 2.3× ocellar diameter. Hind femur 3.8-4.2× as long as wide. 1 st tergite 1.1× as wide as long, latero-median carina in basal 0.5. Structure otherwise as described by BARRON (1978: 355) and KASPARYAN & TOLKANITZ (1999: 347-348).

Color. Chinese ♀ ( Fig. 6 ): black. Palps, inner orbit and spot on upper outer orbit ivory. Mandible reddish medially. 2 nd and 3 rd tergites red. All coxae black; fore and mid trochanters and trochantelli ivory, with black spots; fore and mid femora reddish-yellow, with black stripes; fore and mid tibiae and tarsi reddish-yellow. Hind leg except yellow tibial spurs black. Wings hyaline, pterostigma brown.

Laotic ♀ ( Fig. 7 ): black. Palps, mandible except teeth, clypeus, inner orbit, gena and outer orbit pale yellow. 2 nd and 3 rd tergites red. All coxae black; fore and mid legs otherwise reddish-yellow, its distal tarsomeres brownish; hind leg black, bases of hind tibia and hind metatarsus and tibial spurs yellow. Wings hyaline, pterostigma brown.

Remark. As already stated by BARRON (1978: 355), the color pattern of females of Euceros rufocinctus is variable. The typical morphological features, e.g. the deeply incised median occiput and form of median pronotal process, are similar in the East Palaearctic and Oriental specimens examined here.

D i s t r i b u t i o n: East Palaearctic and Oriental regions, new records for China and Laos.

Figures

Figs 6-7: Heads of Euceros rufocinctus (ASHMEAD), frontal view: (6) ♀ from Northern China, (7) ♀ from Laos.