... Troctomorpha Features of Troctomorpha are 1 2- to 17-segmented antennae, with some flagellar segments secondarily annulated; 2- or 3-segmented tarsi; 2-segmented labial palps; pterostigma not thickened; ... Heteroptera Phylogeny and classification are discussed by Hennig (1 981 ), Hamilton (1 981 ), Popov (1 981 ), Schuh (1 986 ), Wootton and Betts (1 986 ), Wheeler et al (1993), Campbell et al (1994), Sorensen et ... Hemiptera-Fulgoromorpha and Hemiptera-Cicadomorpha, R Entomol Soc Handb Ident Br Insects 2(3):1– 68; 2(2):1–64, 65–1 48 Macan, T T., 1965, A revised key to the British water bugs (Hemiptera-Heteroptera),...