Exeristes longiseta (Ratzeburg, 1844)

Varga, O., 2017, A Review Of The Genus Exeristes (Hymenoptera, Ichneumonidae, Pimplinae) From Carpathians, With An Illustrated Key To Western Palearctic Species, Vestnik Zoologii 51 (1), pp. 9-14 : 12-13

Exeristes longiseta (Ratzeburg, 1844) ( figs 1 ; 2, 2 ; 3 , 2 , 6)

Material. Carpathians. Romania: Brasov Country: Piatra Craiului, 17.08.1960, 1 ♀; Sinaia, 10.12.1960, ex cones, 1 ♀; Neamt Country: Ceahlau, 16.07.1967, 1 ♀; Suceava Country: Poiana Stampei, 17.08.1974, 1 ♀ (Pisica). Ukraine: Ivano-Frankivsk Region: Bogorodchany District: Zhbyr, 400 m, mixed forest, 7–8 km SW of Bogorodchany, sweeping, 21.04.2011, 1 ♀; idem, ex P. mugo (Turra, 1764) cones infested by Pissodes validirostris (Sahlberg, 1834) , collected 17.10.2013, reared 25.10.2013, 1 Ơ, 1 ♀; idem, Malaise trap, 2– 20.07.2014, 1 Ơ; Gorgany, 1500–1600 m, m. Syvulya, subalpine zone, 14–15 km SW of Stara Guta, sweeping, 14.07.2012, 7 Ơ, 2 ♀; idem, sweeping, 1.07.2012, 3 ♀; Nadvirna District: Chornogora, subalpine zone, near Nesamovyte, sweeping, 10– 11.07. 2013, 1 ♀; Transcarpathian Region: Rakhiv District: Chornogora, 2020 m, m. Petros, sweeping, 17.06.2012, 1 ♀ (Varga).

Diagnosis. The female is characterized by the hind coxa black, trochanter yellowish; fore tarsal claws enlarged basally (into lobes); ovipositor tip subapically simple (without tubercle) ( fig. 2, 2 ); metasomal tergites elongated; and hind tarsus with fifth tarsomere weakly shorter than the second tarsomere (as on fig. 3 , 2 ). The male generally resembles female and has yellow scape, pedicel, fore and mid coxae, and all trochanters ( fig. 3 , 2 ).

D i s t r i b u t i o n. Palaearctic Region ( Yu et al., 2012), new record for Ukraine.

Remarks. Only two identified females found in Pisica’s collection, both incorrectly: one female as “ Liotryphon punctulatus (Ratzeburg, 1848) ” and another one as “ Dolichomitus kriechbaumeri (Schulz, 1906) ”.

Figures

Fig. 1. The Carpathian Exeristes spp. distribution map. Yellow circle — E. roborator; red circle — E. longiseta; green circle — E. arundinis.

Fig. 2. Exeristes spp., female. 1 — E. roborator, ovipositor tip (lateral view); 2 — E. longiseta, ovipositor tip (lateral view); 3 — E. arundinis, ovipositor tip (lateral view); 4 — E. denticulator, holotype, ovipositor tip (lateral view); 5 — E. ruficollis, lectotype, ovipositor tip (lateral view); 6 — E. arundinis, fore tarsal claw (lateral view); 7 — E. ruficollis, lectotype, hind femur and tibia (lateral view); 8 — E. denticulator, holotype, hind tibia and tarsus (lateral view); 9 — E. denticulator, holotype, propodeum and tergites I–II of metasoma (dorsal view); 10 — E. roborator, propodeum and tergites I–II of metasoma (dorsal view).

Fig. 3. Exeristes spp., male. 1 — E. arundinis, habitus (lateral view); 2 — E. longiseta, habitus (lateral view); 3 — E. ruficollis, head and mesosoma (lateral view); 4 — E. roborator, clypeus (frontal view); 5 — E. arundinis, hind tarsus (lateral view); 6 — E. roborator, hind tarsus (lateral view).