Pristiphora (Pristiphora) thalictri ( Kriechbaumer, 1884 ), 1998

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 : 791-793

Pristiphora (Pristiphora) thalictri ( Kriechbaumer, 1884)

( Figs 3 , 6 , 9 , 12 )

Nematus thalictri Kriechbaumer, 1884: 105–106 (original description).

Pristiphora thalictri: KONTUNIEMI (1960) : 90 (host plant); TAKEUCHI (1949): 49 (host plant); OKUTANI (1967):92 (host plant); LISTON (1995): 131 (host plant); TAEGER et al. (1998): 115 (host plant); PSCHORN- WALCHER & ALTENHOFER (2006): 1624 (host plant).

Material examined. CZECH REPUBLIC: BOHEMIA mer.: Šumava NP, Černý Kříž (7149), 7.vi.2014, 6 larvae on Thalictrum aquilegifolium ; 19.vi.2015, 18 larvae on Thalictrum aquilegifolium , all J. Macek lgt. & det. ( NMPC) .

Description of the last instar larva. Body length 12–13 mm. Colour. Head yellow brown, with brownish reticulate pattern on vertex; trunk yellow green with narrow translucent dark blood vessel.

Discussion. The larva was shortly descibed and its host plant, Thalictrum aquilegifolium , recorded by KRIECHBAUMER (1884, as Nematus thalictri ). Subsequently this host species was also mentioned by KONTUNIEMI (1960), TAEGER et al. (1998), LACOURT (1999), and PSCHORN- WALCHER (2006). Additionally, TAEGER et al. (1998) noticed larvae of an unrecognized species feeding on Thalictrum minus on a xerotermic site in Kyffhäuser (Fränkischer Jura, Germany), which might refer to P. sareptana . Additional food plants from Japan, Thalictrum thunbergii (OKUTANI 1956) and T. minus ( TAKEUCHI 1949) , are not evaluated here, and need confirmation.

Distribution. Palaearctic: Albania, Austria, Belgium, Croatia, Czech Republic, France, Germany, Great Britain, Italy, Japan, Latvia, Romania, Russia, Slovakia, Switzerland, Ukraine ( TAEGER & BLANK 2011).

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 –