Three new genera and three new species of Nearctic Lasiopteridi (Diptera: Cecidomyiidae: Cecidomyiinae) from Asteraceae and Caprifoliaceae, and the tribe Rhopalomyiini subsumed under Oligotrophini Author Gagné, Raymond J. text Zootaxa 2016 4158 3 403 418 journal article 10.11646/zootaxa.4158.3.6 f703d70e-e971-44dd-bec8-2eccedb22f06 1175-5326 263699 216AD21E-D9CC-4BD6-A0A9-A7C7F679FAF1 Chiosperma turgidum Gagné , new species Figs 6 , 32–41 . Description. Adult : Wing ( Fig. 8 ) length: male 5.6–6.0 (n=7, avg.=5.7); female 4.7–5.3 mm (n=6, avg.=5.1). Head as in Fig. 33 , palpus 1- or 2-segmented, antennal flagellomeres as in Figs 34–35 . Acropods as in Figs 36–37 . Male terminalia as in Figs 41 –42. Female postabdomen as in Figs 32 , 39 . Pupa . Anterior segments ( Fig. 38 ) as in the generic description. Larva , third instar . Spatula lacking. Length of the one poor specimen, ca. 2.5 mm . Material examined . HOLOTYPE : male, from Symphoricarpos albus , Spokane , Washington , 25.iv.1997 , D. Kinateder . Paratypes : 5 males , 6 females , 3 pupae and 1 larva, same data as holotype . Etymology . The specific name turgidum (Latin for swollen) refers to the enlargement of host's buds caused by this species. Life history . This species is responsible for an elongate, swollen bud gall ( Fig. 3 ) on Symphorocarpos albus . Buds are enlarged, about 5 mm wide by 8–10 mm long, and do not open.