Figure 7: Hemitrochostoma species, external female genitalia. 28–31Hemitrochostomaaltilabris Bergroth, 1913 32Hemitrochostomarutabulum sp. n. 28, 32 terminalia, posteroventral view 29 individualized segments VIII–XI, lateral view 30 same, anterodorsal view 31 spermatheca. Lettering: cod = common oviduct, gy = gynatrium, im7-8 = intersegmental membrane between segments VII and VIII, lt9 = laterotergite IX, rc = rectum, rs = ring sclerite, sth = spermatheca, t8 = tergite VIII, t10-p, t10-d = proximal and distal portions of tergite X, respectively, t11 = tergite XI, vf8 = valvifer VIII. Scales in mm.

Mentions: Pregenital abdomen (Figs 9, 26) distinctly broader than long; connexival segments distinctly separated, intersegmental sutures running to lateral margin of abdomen; posterolateral angles of segments IV and V minutely, obtusely, protruding; dorsal laterotergites present in segments III–VI, rather broad; ventral laterotergites greatly fused with the respective sternites (these ventral plates of composite origin are termed ventrites), lateral portions of ventrites III–VII demarcated by a longitudinal furrow, spiracles III–VII situated close to this furrow mesally and about halfway between anterior and posterior margin of each segment; segments III–VII each with 2 pairs of longitudinally arranged trichobothria situated posteriad and somewhat mesad of the respective spiracles in an oval impression; median lengths of ventrites III–VI subequal, that of ventrite VII somewhat longer (female); posterior margin of ventrite VII of female deeply, subtriangularly emarginate (cf. Figs 26, 28, 32); tergite VIII (Fig. 27: t8) short, narrowly desclerotized along midline.