Descriptions of larvae of the Pristiphora thalictri group of the Czech Republic (Hymenoptera: Symphyta: Tenthredinidae) Author Macek, Jan text Acta Entomologica Musei Nationalis Pragae 2016 2016-11-15 56 2 785 794 journal article 10.5281/zenodo.5306285 0374-1036 5306285 9A4655BC-F868-4494-ACCB-406BF595B684 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. Figs. 10–12. Genitalia of reared adults (a – penis valve, b – 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 ).