Pantolyta flaviventris ( Thomson, 1858 ), 2021

Pantolyta flaviventris ( Thomson, 1858) ,

comb. nov.

( Figs 5A, 6A, 11H, 15A–C, 16B)

Cinetus flaviventris Thomson, 1858: 165 .

Anectata dispar Brischke, 1891: 28 . Synonymised by Huggert (1979).

Acropiesta flaviventris : Kieffer, 1909: 595.

Xenotoma gracilicornis Kieffer, 1910: 614 . Synonymised by Nixon (1957).

Material examined. Ukraine: Zakarpattia Prov., Carpathian Biosphere Reserve, 7–8.VIII.1989, A. Kotenko leg., 3 males; Ternopil Prov., Berezhany, 31. V.1952, Mesnyaev leg., 2 males; Kyiv, Holosiivskyi Forest, 27. VI.1993, A. Kotenko leg., 1 female; Kyiv Prov., Irpin, 27. V.1984, A. Kotenko leg., 1 male. Russia: Kaliningrad Prov., Curonian Spit National Park, 55°09′16.83″N 20°51′27.03″E, Rybachiy Vill.,, 24.VII–4.VIII.2006, V. Kolyada leg., 1 female ( ZMUM); Leningrad Prov., Semrino, 22.VII.1972, D. Kasparyan leg., 1 male; Moscow: Krylatskoe, Rublevskiy forest, VI.2004, V. Kolyada leg., 3 females ( ZMUM); same locality, VII.2004, V. Kolyada leg., 1 female ( ZMUM); Bitsa Park, 23. VI.1993 and 1– 10.VII.1994, V. Kolyada leg., 2 females ( ZMUM); Moscow Prov.: Malinki Vill., 18. V.1973, E. Antonova leg., 2 females ( ZMUM); Pavlovskaya Sloboda Vill., 3.VII.1993, V. Kolyada leg., 2 males ( ZMUM); Karachay-Cherkess Republic, Teberda, 10–15.VII.1976, D. Kasparyan leg., 1 female; Chechen Repiblic, Itum- Kale Vill., 8. VI.1972, D. Kasparyan leg., 1 female; Komi Republic, 40 km W of Labytnangi, 17.VIII.1972, D. Kasparyan leg., 1 male; Tyumen Prov., Krasnosel’kup, 11–13.VIII.1992, D. Kasparyan leg., 1 female; Krasnoyarsk Terr., Eniseysk Distr., Nazimovo, 11– 13.VII.1988, D. Kasparyan leg., 1 female; Sakhalin Prov.: Sakhalin I., vicinity of Novoaleksandrovka, V.G. Chemyreva & V.A. Kolyada. Taxonomy of Acropiesta , Anommatium , Erasikea and Pantolyta

5.VII and 7.X.1973, D. Kasparyan leg., 1 male, 1 female; Noyba River , 10 km from Bykovo , 10– 20.VIII.1991, V. Zherikhin leg., 1 male ( ZMUM); Primorskiy Terr. , Shkotovskiy Distr., Peyshula , 25.VII.1972, V. Kuslitzky leg. 1 male; 10 km SE of Ussuriysk , 12–19.VII.2001, S. Belokobylskij leg., 1 female; Lazovskiy Nature Reserve , 9–17.VII.2008, A. Khalaim leg., 1 female. Crimea : Crimean Nature Reserve , 21.VI.1976 and 20.VI.1978, A. Kotenko leg., 3 males; same locality , 28. VI .1976 , S. Kononova leg., 3 males. Georgia, Arsiani Mts , Goderdzis Pass, 3.VII.1967, D. Kasparyan leg., 1 male.

Variation. Female with antenna yellowish brown to dark brown; A3 1.0–1.2 times as long as A15; petiole weakly transverse to quadrate. Male with antenna shorter to longer than body; metasoma posterior to petiole 0.92–1.1 times as long as head, mesosoma and petiole combined; petiole 1.5–2.15 times as long as wide. Both sexes with radial cell 1.75–2.45 times as long as marginal vein; marginal vein 0.85–1.1 times as long as distance from it to basal vein.

Distribution. Western, northern and eastern Europe, * Georgia, Russia (European part, *Siberia, *Far East), * Ukraine.

Hosts. Trichosia caudata (Walker, 1848) ( Diptera : Sciaridae ) ( Tuomikoski, 1957; Hellén, 1964) and Sciara ligniperda ( Brischke, 1891) ( Diptera : Sciaridae ) living in rotten alder wood ( Brischke, 1891).