Pristiphora dochmocera (Thomson, 1871)

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 : 77-79

Pristiphora dochmocera (Thomson, 1871) Fig. 220

Tenthredo flavipes Zetterstedt, 1838: 350-351, syn. n. Primary homonym of Tenthredo flavipes O.F. Müller, 1776 [= Hymenoptera non- Symphyta, 1758]. Holotype ♀ (DEI-GISHym20851) in MZLU, examined. Type locality: Senja Island, Troms, Norway.

Nematus dochmocerus Thomson, 1871: 93. Lectotype ♀ (NHRS-HEVA000003757; here designated) in NHRS, examined. Type locality: Dalarna, Sweden.

Nematus congener W.F. Kirby, 1882: 394, syn. n. Replacement name for Tenthredo flavipes Zetterstedt, 1838.

Pristiphora thomsoni Lindqvist, 1953: 223-224, syn. n. Holotype ♀ (MZLU2015172) in MZLU, examined. Type locality: Norrland, Sweden.

Similar species.

The small differences in the length of antennae and coloration of the legs among the primary types of flavipes Zetterstedt, dochmocerus Thomson, and thomsoni Lindqvist do not allow clear separation of these taxa. The legs are darkest in thomsoni (trochanters, trochantelli, and metafemur are more or less completely black), palest in flavipes Zetterstedt (trochanters, trochantelli, and metafemur are more or less completely pale), and dochmocerus Thomson differs from flavipes only by having a slightly darker metafemur (black in basal 1/3). The lancets of the types are very similar (Fig. 220) and therefore we treat these taxa as a single species. The only difference from P. thalictrivora is the black tegula (extensively pale in P. thalictrivora ).

Genetic data.

Based on COI barcode sequences, specimens of the rufipes group are divided between five BIN clusters (BOLD:AAI2590, BOLD:AAU8834, BOLD:ABU9175, BOLD:ABV4437, and BOLD:ACW1774), four of which are found in Europe (BOLD:AAU8834 is so far known only from Canada) (Fig. 5). Minimal distances between these clusters are 3.06-4.35%. Because of unresolved taxonomy, it is not yet clear how different species are divided among these BIN clusters. Based on nuclear data, maximum divergence within the group is 1.4% (based on eight specimens and TPI) and the nearest neighbour is 1.0% ( P. cincta , both genes combined) or 0.4% different ( P. cincta , only NaK).

Host plants.

Unknown. Based on the structure of the lancet (Fig. 220), the host is probably Thalictrum , as the other closely related species feeding on Thalictrum have similar or identical lancets.

Distribution and material examined.

West Palaearctic. Specimens studied are from Norway and Sweden.