Genus Susua Lugo-Ortiz & McCafferty 1998

(Figs 1–110)

Susua Lugo-Ortiz & McCafferty 1998: 24 .

Type species Afroptilum niandanensis Wuillot in Wuillot & Gillies 1993b .

Diagnosis. Tergalius I is sharply different from others, petiolate, i.e. narrow in proximal part and widened in distal part (Figs 20, 41, 72). The same in Dabulamanzia and Cheleocloeon, but not in Crassabwa, whose tergalius I is wide in proximal part, but is bent in such a way that looks like petiolate (Kluge et al. 2017: Figs 13, 84). Each tergalius I–VII with costal and anal ribs on costal and anal margins, with distal margin not bordered by rib (Figs 20–26, 72–76).

At least tergalii II–VII are unable for rhythmical respiratory movements: in S. niandanensis only tergalii of 1 st pair make respiratory movements, in S. sigiensis all tergalii are unable for respiratory movements.

Cuticular coloration of abdominal terga is similar in both species: cuticle of terga VII–VIII and X either colorless, or with brown pigmentation less intensive than on terga III–VI and IX (Figs 3, 12, 79, 81).

Maxillary palp 2-segmented, with 2nd segment very soft and delicate (Wuillot & Gillies 1993b: Fig. 21) (in contrast to Crassabwa, whose 2nd segment is widened).

Muscle-abductor of 2nd segment of labial palp is attached at base of submentum (Fig. 5) [in contrast to Crassabwa, where it is attached at median groove of submentum (Kluge et al. 2017: Fig. 5)].

Larval abdominal terga II–VI either without denticles, or with irregular denticles alternating with scales (Fig. 37) [in contrast to Crassabwa, whose abdominal terga I–X have regular row of pointed denticles on posterior margin (Kluge et al. 2017: Fig. 20)].

Larval cerci with small denticles on lateral sides of all segments (Fig. 10) (in contrast to Crassabwa, whose cerci and paracercus have prominent denticles enlarged on each 2nd segment).

Postsubalar sclerite has posterior-dorsal corner stretched to a process with convex dorsal margin (Figs 49, 102). The same in many other taxa, but in contrast to Crassabwa, whose posterior-dorsal process is thinner, with concave dorsal margin (Kluge et al. 2017: Figs 36, 98). Postsubalare has the same shape in imago and subimago, being well visible on subimaginal exuviae due to contrasting cuticular coloration.

Composition. The genus Susua includes two species, S. sigiensis (Gillies 2001) and S. niandanensis (Wuillot in Wuillot & Gillies 1993) . Two species which Salles, Gattolliat & Sartori (2016) reported as «aff. Susua sp. 1» and «aff. Susua sp. 2», were subsequently moved to the genus Crassabwa and described as Crassabwa ameliae Kluge et al. 2017 and C. ludmilae Kluge et al. 2017 correspondingly (see below).