Pristiphora armata (Thomson, 1863)

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 : 63-64

Pristiphora armata (Thomson, 1863) Figs 16, 57, 193, 263

Nematus crassicornis Hartig, 1837: 204-205. Primary homonym of Nematus crassicornis Stephens, 1835 [= Cladius (Cladius) pectinicornis (Geoffroy, 1785)]. 3 ♀♀ and 13 ♂♂ possible syntypes belonging to P. armata and P. leucopus in ZSM, examined. Type locality: Germany according to the title of the publication.

Nematus armatus Thomson, 1863: 619. Seven possible female syntypes belonging to P. armata and P. leucopus in MZLU, examined. Type locality: Bohus Län ( Bohuslän), Stockholm, and Skåne, Sweden. Note. Because of difficulties separating P. armata from P. leucopus (see Prous et al. 2016), we refrain from selecting a lectotype at this stage.

Nematus crataegi Brischke, 1883b: pl. I(7), 6. Syntype(s) possibly destroyed ( Blank and Taeger 1998). Type locality: not stated, but probably in former East Prussia (now Kaliningrad Oblast of Russia, or Poland). Synonymised with P. crassicornis by Konow (1905).

Nematus Fletcheri [sic!] Cameron, 1884: 26. Syntype(s) possibly in BMNH, not examined. Type locality: Worcester and Clydesdale, United Kingdom. Synonymised with P. crassicornis by Konow (1905).

Nematus melanostomus Zaddach in Brischke, 1884: 140-141. Holotype ♀ possibly destroyed ( Blank and Taeger 1998). Type locality: Bautzen, Saxony, Germany. Synonymised with P. crassicornis by Konow (1905).

Nematus ensicornis Jacobs, 1884: XXIII. Syntype(s) ♀ possibly in IRSNB, not examined. Type locality: near Brussels, Belgium. Synonymised with P. crassicornis by Konow (1905).

Nematus nigricollis Cameron, 1885: 66. Syntype(s) possibly in BMNH, not examined. Type locality: Worcester, United Kingdom. Synonymised with P. crassicornis by Konow (1905).

Similar species.

The most similar species is P. leucopus . Differences between these two species, which unfortunately are not very strong, were discussed by Grearson and Liston (2012) and Prous et al. (2016).

Genetic data.

Based on COI barcode sequences, P. armata belongs to the same BIN cluster (BOLD:AAQ2302) as P. leucopus (Fig. 4). Maximum distance within the BIN is 2.41% and minimum between species distance is possibly 0.00%. The nearest neighbour to BOLD:AAQ2302, diverging by minimum of 2.76%, is BOLD:AAG3568 ( P. aphantoneura , P. bifida , P. confusa , P. luteipes , P. opaca , P. pusilla , P. staudingeri , and P. subopaca ). Based on nuclear TPI sequences, P. armata (one specimen) and P. leucopus (two specimens) cannot be separated either. The P. armata specimen is identical to one of the P. leucopus specimens when ambiguous positions due to heterozygosity are excluded.

Host plants.

Crataegus species (Brischke 1883, Grearson and Liston 2012).

Distribution and material examined.

West Palaearctic. Specimens studied are from Belgium, Finland, France, Germany, Italy, Luxembourg, and Sweden.