Dineura, Dahlbom, 1835

Macek, Jan, 2015, Descriptions and key to larvae of Central European Dineura (Hymenoptera: Symphyta: Tenthredinidae), Acta Entomologica Musei Nationalis Pragae 55 (2), pp. 787-796 : 791

Key to the larvae of Central European Dineura

1 The setae on annulets trichoid, very short, shorter than width of the annulet; warts absent (Fig 9a). Setae on subspiracular lobe very short (Fig. 9b). Host plants: Betula spp. ............................................................................. D. virididorsata ( Retzius, 1783)

– The setae on annulets truncate, bifid or spatulate, placed on more or less prominent warts. Setae on subspiracular lobe long ( Figs 7b, 8b ). Host plants: Rosaceae (shrubs and trees). ..................................................................................................................... 2

2 The setae on annulets truncate, shorter than the length of the annulets, placed on the inconspicuous, flat warts ( Figs 7a ). Subspiracular lobe with 3 setae and one glanduba ( Fig. 7b ). .................................................................................... D. stilata ( Klug, 1816)

– The setae on annulets emarginate or spatulate, longer than the length of the annulets, placed on prominent conical warts ( Figs 8a ). Subspiracular lobe with 5–6 setae and one glanduba ( Fig. 8b ). ............................................................. D. testaceipes ( Klug, 1816)

Figures

Figs 7–8. Dineura Dahlbom, 1835, 3rd abdominal segment of larvae (a – dorsal section, b – subspiracular lobe): 7 – D. stilata (Klug, 1816), 8 – D. testaceipes (Klug, 1816), 9 – D.virididorsata (Retzius, 1783). Scale bar: 0.05 mm.