Pristiphora (Pristiphora) sareptana Kuznetzov-Ugamskij, 1924

Macek, Jan, 2016, Descriptions of larvae of the Pristiphora thalictri group of the Czech Republic (Hymenoptera: Symphyta: Tenthredinidae), Acta Entomologica Musei Nationalis Pragae 56 (2), pp. 785-794 : 786-789

Pristiphora (Pristiphora) sareptana Kuznetzov-Ugamskij, 1924

( Figs 1 , 5 , 7 , 11 )

Pristiphora sareptana Kuznetzov-Ugamskij, 1924: 11–12 (original description).

Pristiphora moravica Gregor, 1940: 19–20 (original description); ZHELOKHOVTSEV & ZINOVYEV (1988): 156 (synonymy).

Material examined. CZECH REPUBLIC: BOHEMIA centr.: Český kras PLA, Karlštejn NNR, Doutnáč (hill), (6051), 433 m a.s.l., 20.v.2012, 38 larvae on Thalictrum foetidum, J. Macek lgt. & det. ( NMPC). MORAVIA mer.: Pouzdřany env., Pouzdřanská step NNR (7065), 13.vi.2015, 16 larvae on Thalictrum minus, J. Macek lgt. & det. ( NMPC).

Description of the last instar larva. Colour. Head yellow green, with brownish reticulate pattern on vertex and black spot on frons; trunk green with translucent dark blood vessel margined with white strips of fat body; setae on thorax, postspiracular, subspiracular, and suprapedal lobes on dark pigmented, slightly protruding basal rings; base of thoracopods with black narrow stripe.

Morphology. Body length 12–13 mm. Head with scattered upraised setae; clypeus with four setae, labrum symmetrical and deeply emarginated anteriorly, with four setae; mandibles with one seta; stipes with no setae; palpifer with two setae; second segment of palpus with one seta. Trunk cuticle finely granulose; prothorax (four annulets): first annulet with 3+3 setae, second annulet with 12 setae, fourth annulet with 6 setae, lateral lobe with 5 setae, suprapedal lobe with 3–4 setae; mesothorax (four annulets): first annulet with 6 setae, second annulet with 14 setae, lateral lobe with 6–7 setae, suprapedal lobe with 3–4 setae; metathorax (four annulets): first annulet with 4 setae, second annulet with 6 setae, third annulet with 12 setae, lateral lobe with 6–7 setae, suprapedal lobe with 3–4 setae; abdominal segments (III–VII) (six annulets): second annulet 10–12 setae, fourth annulet 8 setae, first postspiracular lobe with 3 setae, second postspiracular lobe with 3 setae, subspiracular lobe with 4–5 setae, suprapedal lobe with 4–6 setae, supraanal and subanal lobes with scattered long setae.

Notes on identification. Larvae of Pristiphora sareptana differ from the larvae of P.rufipes and P. thalictri in the presence of black rings surrounding the base of setae on the thorax and lateral lobes of abdominal segments ( Figs 7a,b ).

Bionomics. Habitat: xerotermophilous species, inhabiting tall and low xeric shrubs and termophile deciduous forests; bivoltine/trivoltine; flight period from April to September; larval period from May to September. Host plants: Thalictrum minus (first record), Thalictrum foetidum (first record). Mature larvae build a solid cocoon covered with soil particles, in which they also hibernate.

Distribution. Pristiphora sareptana is a West-Palaearctic species known from the Czech Republic, Finland, Kazakhstan, Poland, Russia (European part), Slovakia, and Turkey ( TAEGER & BLANK 2011). In the Czech Republic it was first recoded from southern Moravia by GREGOR (1940), who described it as a new species, Pristiphora moravica , which was, however, later synonymized by ZHELOKHOVTSEV & ZINOVYEV (1988) with P. sareptana . New record for Bohemia.

Figures

Figs 1–3. Live last instar larvae: 1 – Pristiphora sareptana Kuznetzov-Ugamskij, 1924; 2 – P.rufipes Serville, 1823; 3 – P. thalictri (Kriechbaumer, 1884). Scale bar: 10 mm.

Figs 4–6.Adults reared from larvae (a – female, b – male): 4 – P.rufipes Serville, 1823; 5 – P. sareptana Kuznetzov- Ugamskij, 1924; 6 – P. thalictri (Kriechbaumer, 1884). Scale bar: 5 mm.

Figs 7–9. Mounted last instar larvae from alcohol (a –, anterior part, b – 2nd and 3rd abdominal segment): 7 – P.sareptana Kuznetzov-Ugamskij,1924; 8 – P.rufipes Serville,1823; 9 – P.thalictri (Kriechbaumer, 1884). Scale bar:3 mm.

Figs. 10–12. Genitalia of reared adults (a – penis valve, b –