Pristiphora micronematica Malaise, 1931

Prous, Marko, Kramp, Katja & Liston 1, Veli VikbergAndrew, 2017, North-Western Palaearctic species of Pristiphora (Hymenoptera, Tenthredinidae), Journal of Hymenoptera Research 59, pp. 1-190 : 51-53

Pristiphora micronematica Malaise, 1931 Figs 207, 305

Pristiphora micronematica Malaise, 1931: 58-59. Lectotype ♀ (NHRS-HEVA000003865; here designated) in NHRS, examined. Type locality: Lake Azhabachye ( Ажабачье) near Nizhnekamchatsk ( Нижнекамчатск), Kamchatka Krai, Russia.

Lygaeonematus (Lygaeophora) leucostoma Lindqvist, 1952: 108. Holotype ♀ (DEI-GISHym31675) in MZH, examined. Type locality: Munksnäs, Uusimaa, Finland.

Similar species.

Species limits in the micronematica group are still unclear.

Genetic data.

Based on COI barcode sequences, specimens of the micronematica group belong to the BIN cluster BOLD:ACG2488. Maximum distance within the BIN is 2.45%. The nearest neighbour to BOLD:ACG2488, diverging by a minimum of 4.1%, is BOLD:ACO1401 ( P. euxantha ). Based on nuclear data, maximum divergence within the group is 2.5% (based on four specimens and TPI) and the nearest neighbour is 4.7% ( P. nigella , only TPI) or 0.6% different ( P. siskiyouensis , only NaK).

Host plants.

Salix caprea L. ( Verzhutskii 1981), S. phylicifolia L. ( Kangas 1985, ex ovo rearing experiments by VV), S. pentandra L. ( Kangas 1985).

Rearing notes.

Ovipositing experiment no. 1/1973: Finland, North Karelia, Joensuu, Purola. One female was captured and buds of Salix phylicifolia and young leaves of Betula pubescens were offered her. On 18-19.V.1973 several eggs were laid in buds of Salix , the egg pockets were on undersides of leaves near the leaf margin. Four larval instars were observed, their development was rapid and on 28.V.1973 several prepupae were seen. No extra moult after feeding.

Distribution and material examined.

Palaearctic, Nearctic. Specimens studied are from Finland and Russia (Kamchatka Krai).