Pristiphora confusa Lindqvist, 1955,

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: 68

publication ID

publication LSID

persistent identifier

treatment provided by

Journal of Hymenoptera Research by Pensoft

scientific name

Pristiphora confusa Lindqvist, 1955


Pristiphora confusa Lindqvist, 1955  Figs 196, 268

Pristiphora confusa  Lindqvist, 1955: 40-41. Holotype ♀ ( in MZH, examined. Type locality: Sipoo [Sibbo], Uusimaa, Finland.

Similar species.

Based on the external morphology, the most similar species are P. albitibia  , P. armata  , P. leucopus  , P. opaca  , P. pusilla  , P. sootryeni  , and P. subopaca  . Pristiphora confusa  is best distinguished by the structure of the male penis valve (Fig. 268). Unfortunately, it is rather difficult to distinguish females from P. armata  , P. leucopus  , P. opaca  , and P. subopaca  , as the differences in lancets are small (Figs 192-193, 196-198). The apical serrulae are more protruding and shorter than in P. opaca  and P. subopaca  (Figs 196-198). Pristiphora opaca  also has a fold at the base of the tangium of the lancet (Fig. 197) that is lacking in other species in the ruficornis  group. Pristiphora opaca  tends also to have a smaller subapical tooth than P. confusa  (Figs 22-23). The pterostigma of P. confusa  is apically brown and basally dark brown, like in P. opaca  (Fig. 40), but unlike in P. subopaca  , in which it is uniformly yellow (Fig. 39). In P. armata  and P. leucopus  , the pterostigma is usually dark brown (Fig. 42), but sometimes the pterostigma can have more or less the same colour as in P. confusa  . In this case, small differences in the lancet can help distinguish P. confusa  from P. armata  and P. leucopus  , as setae tend to be more distinct in P. confusa  (Figs 192-193, 196). Among the males, the most similar penis valves are of P. subopaca  . The valvispina in P. confusa  is barely bent and the pseudoceps is narrower compared to P. subopaca  (Figs 268-269).

Genetic data.

Based on COI barcode sequences, belongs to the same BIN cluster (BOLD:AAG3568) as P. aphantoneura  , P. bifida  , P. luteipes  , P. opaca  , P. pusilla  , P. staudingeri  , and P. subopaca  (Fig. 4). Maximum distance within the BIN is 3.33% and minimum between species distance is 0.00%. The nearest neighbour to BOLD:AAG3568, diverging by minimum of 2.76%, is BOLD:AAQ2302 ( P. armata  and P. leucopus  ). Based on nuclear data, maximum within species divergence is 0.7% (based on two specimens and both genes combined) and the nearest neighbour is 0.0% different ( P. bifida  or P. luteipes  , only TPI). If TPI introns are included, the nearest neighbour is still 0.0% different ( P. bifida  ).

Host plants.

Salix caprea  L. ( Kangas 1985), Salix fragilis  L. ( Benson 1958), Salix phylicifolia  L. ( Benson 1958).

Distribution and material examined.

Palaearctic. Specimens studied are from Estonia, Finland, France, Germany, Russia (Primorsky Krai), Sweden, and Switzerland.