North-Western Palaearctic species of Pristiphora (Hymenoptera, Tenthredinidae)
Author
Prous, Marko
Author
Kramp, Katja
Author
Liston 1, Veli VikbergAndrew
text
Journal of Hymenoptera Research
2017
59
1
190
http://dx.doi.org/10.3897/jhr.59.12565
journal article
http://dx.doi.org/10.3897/jhr.59.12565
1314-2607-59-1
598C5BB321364D91B522FA14D8874A52
Pristiphora alpestris (Konow, 1903)
Figs 65, 88, 203, 233, 235
Pachynematus
alpestris
Konow, 1903: 380 (key). Lectotype ♀ (GBIF-GISHym3921; here designated) in SDEI, examined. Type locality: Switzerland.
Lygaeonematus karvoneni
Lindqvist, 1952: 116-117, syn. n. Holotype ♂ (DEI-GISHym20888) in MZH, examined. Type locality: Pasila-Moor, Helsinki, Finland.
Similar species.
The most similar species is
P. pseudocoactula
, from which it can be distinguished by usually having paler coloration (yellow clypeus, labrum, metafemur, and valvula 3) and different lancet and penis valve (see the Key). The holotype of
karvoneni
Lindqvist is not separable from
P. alpestris
(Figs 233, 235) and the figure of the penis valve given for
karvoneni
by
Lindqvist (1952)
is misleading: the valvispina is drawn close to the ventral margin of paravalva (Fig. 51 in
Lindqvist 1952
), while in
alpestris
and in the holotype of
karvoneni
it is distinctly removed from the ventral margin (Figs 233, 235). Furthermore, the reported host plant (
Betula pendula
) of
karvoneni
is also used by
P. alpestris
(Kangas, 1985).
Genetic data.
Based on COI barcode sequences,
P. alpestris
belongs to the same BIN cluster (BOLD:AAK9467) as
P. pseudocoactula
(Fig. 5). Maximum distance within the BIN is 1.62% and minimum between species distance is 0.00%. The nearest neighbour to BOLD:AAK9467, diverging by a minimum of 4.69%, is BOLD:ACO1401 (
P. euxantha
). Based on nuclear data (one specimen; NaK), the nearest neighbour is 0.7% different (
P. pseudocoactula
).
Host
plants.
Betula pendula
Roth (
Adam 1973
,
Kangas 1985
, ex ovo rearing experiments by VV),
Betula pubescens
Ehrh. (Kangas, 1985).
Rearing notes.
Ovipositing experiment no. 3/1983: Finland, Janakkala, Kalpalinna. One captured female laid eggs on 7.V.1983 in pockets on undersides of the young leaves of
Betula pendula
, the egg pockets are attached to side veins. Larvae hatched on 11.V.1983, four larval instars were observed. They grew rapidly and prepupae were seen on 20.V.1983 and the next days. No extra moult after feeding.
Distribution and material examined.
West Palaearctic. Specimens studied are from Finland, Germany, Sweden, and Switzerland.