Pristiphora malaisei (Lindqvist, 1952)

Prous, Marko, Liston, Andrew, Kramp, Katja, Savina, Henri, Vardal, Hege & Taeger, Andreas, 2019, The West Palaearctic genera of Nematinae (Hymenoptera, Tenthredinidae), ZooKeys 875, pp. 63-127 : 63

Pristiphora malaisei (Lindqvist, 1952)

Notes.

A single larva was obtained in northern Sweden by combing through the leaves of an isolated clump of Dryas octopetala , under which an inverted frisbee was held. The plant was growing on an otherwise bare patch of soil at the edge of a road. Gene sequences of the larva are nearly identical to those of Pristiphora malaisei imagines collected in the same area. Although the specimen ( Fig. 74 ) is small (approx. total length 3 mm), and has been conserved in 96% ethanol, it seems to resemble the larva of P. dasiphorae as described by Zinovjev (1993) much more closely than the larva of P. malaisei (see Fig. 86 ) described in the same paper [under the name Pristicampus incisus (Lindqvist), synonymised with malaisei by Prous et al. (2017)], in having only three annulets on abdomen segments [six, as described by Zinovjev for incisa, on Potentilla fruticosa ] and very long body setae [much shorter as described by Zinovjev]. Note that dasiphorae , so far only associated with Potentilla fruticosa as a host and in Europe known only from the Swedish island of Öland, is genetically clearly separable from malaisei ( Prous et al. 2017). The larva from Dryas cannot, therefore, belong to dasiphorae . Zinovjev (1993) based his description of the larva of malaisei (as incisus ) on specimens collected in the East Palaearctic (Siberia). Efforts should be made to obtain mature larvae of malaisei from northern or subarctic-alpine areas, in order to check the morphology of the larva, and to test the host association with Dryas .

Specimen examined.

Sweden: Torne Lappmark: 1 larva (DEI-GISHym83704), from Dryas octopetala , Abisko National Park (380 m), 68.35300N, 18.76300E, 06.08.2017, leg. Liston & Prous (SDEI).

Figures

Figures 69 - 76. Larvae of Nematinae 69 Mesoneura opaca 70 - 71 Pseudodineura clematidis; ventral, dorsal 72 - 73 Platycampus luridiventris 74 Pristiphora malaisei from Dryas octopetala 75 Cladius compressicornis 76 Cladius pectinicornis.

Figures 77 - 87. Larvae of Nematinae 77 Cladius grandis 78 Euura sp. amentorum group 79 Nematinus acuminatus 80 Nematinus luteus 81 Nematinus steini 82 - 83 Anoplonyx albitarsis 84 Hoplocampa crataegi 85 Stauronematus platycerus 86 Pristiphora malaisei from Potentilla fruticosa 87 Hemichroa crocea.