Astrenis nigrifacies Vikberg, 2000

Varga, Oleksandr, 2023, The genera Astrenis Förster, 1869 and Phrudus Förster, 1869 (Hymenoptera, Ichneumonidae: Tersilochinae) in the Ukrainian Carpathians, Zootaxa 5315 (6), pp. 584-592 : 586-587

Astrenis nigrifacies Vikberg, 2000 ( Fig. 2 )

Material examined. UKRAINE: Ivano-Frankivsk Reg .: 1 ♀, Bogorodchany Distr., Gorgany, m. Igrovets , 7 km SW of Stara Guta, 48.598571, 24.130344, 1375 m, border between coniferous forest and subalpine zone, Malaise trap, 2–20.vii.2014 ; Transcarpathian Reg.: 1 ♀, Rakhiv Distr., Svydovets , 2–3 km NW of Kvasy, 48.144694, 24.270809, 750 m, beech forest, Malaise trap, 24.vi–14.vii.2013 ; 1 ♁, 4 ♀, idem, 7.v–5.vi.2014 ; 3 ♀, idem, 5–29.vi.2014 ; 4 ♀, idem., 29.vi–15.vii.2014 ; 1 ♀, idem, 15.vii–10.viii.2014 ; 1 ♀, Tyachiv Distr. , 6.5 km N of Mala Ugolka, 48.259464, 23.619672, 600 m, beech forest, Malaise trap №4, 13.vi–8.vii.2015 ; 2 ♀, idem, 8.vii–6.viii.2015 ; 1 ♀, Vynogradiv Distr., Vynogradiv , 280 m, oak forest, 48.138338, 23.073689, Malaise trap №1, 17.v–10.vi.2017, leg. O. Varga ( SIZK) .

Diagnosis. The Ukrainian specimens of Astrenis nigrifacies are characterized by the combination of the following characters: fore tarsal claw strongly pectinate to the middle, the last tooth is the longest ( Fig. 2B ); antenna with 15–16 flagellomeres, flagellomeres 3–6 each with a white tooth-like projection on apical half of flagellomere; mesoscutum without a longitudinal carina; fore wing with vein 3rs-m absent; second metasomal tergite with a lateral fold ( Fig. 2C ); face black; all femora from red to weakly brownish.

Distribution. North-West Europe ( Vikberg & Koponen 2000); first record from Ukraine.

Figures

FIGURE 2. Astrenis nigrifacies Vikberg, 2000, female. A. Lateral view of habitus. B. Lateral view of fore tarsal claw. C. Lateral view of second metasomal tergite.