Pristiphora pallida (Konow, 1904)

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 : 56

Pristiphora pallida (Konow, 1904) Figs 8, 125, 171, 276

Lygaeonematus pallidus Konow, 1904a: 195, 204. Lectotype ♀ (GBIF-GISHym3906; here designated) in SDEI, examined. Type locality: Thüringen, Germany.

Lygaeonematus Stecki [sic!] Nägeli, 1936: 218-219. No type specimens were found in ETHZ by Michael Greeff. Type locality: Bülach, Switzerland. Synonymised with Lygaeonematus pallidus by Forsslund (1939).

Similar species.

The most similar species is P. subarctica . For females, there might be small differences in basal annuli of the lancet: in P. pallida , the gap between basal serrulae is smaller and setae are more numerous on basal three annuli than in P. subarctica . Additional differences mentioned by Forsslund (1939) are even smaller or do not seem to be reliable. For example, the lancet is supposed to be more bent in P. pallida (dorsally convex and ventrally concave) than in P. subarctica (somewhat evident also in Figs 171-172), but this difference seems to be absent according to drawings by Wong (1975: figs 17-18). Penis valves are also almost identical, the only difference being possibly the absence ( P. pallida , Fig. 276) or presence ( P. subarctica , Fig. 278) of a depression on the apical part of valvispina. More studies are needed to decide if P. pallida and P. subarctica are distinct species.

Genetic data.

Based on COI barcode sequences, P. pallida forms its own BIN cluster (BOLD:AAX8150). Maximum distance within the BIN is 0.69%. The nearest neighbour to BOLD:AAX8150, diverging by minimum of 2.44%, is P. subarctica (no full barcode available, but possibly belonging also to BOLD:AAX8150). Based on nuclear data (one specimen and NaK), the nearest neighbour is 1.1% different ( P. parva ).

Host plants.

Picea abies (L.) Karsten ( Boevé 1990, Pschorn-Walcher and Altenhofer 2000).

Distribution and material examined.

West Palaearctic. Specimens studied are from Germany.