It belongs to the Siphonella genus group (Kanmiya 1983), with the following characters: head much wider than long; face concave, with a linear median carina; gena narrow; frons speckled, thickly clothed with short setulae, and sparsely microtomentose universally or in reticular-form; scutum as long as wide, convex, minutely or weakly shagreened, glossy or entirely microtomentose in both sexes; male surstylus highly specialized, incrassate and semi-globose, larger than epandrium in lateral view; gonites not well demarcated; hypandrium
closed (Sabrosky 1980; Kanmiya 1983; Merz 2008).
First flagellomere shorter than scape 3 and pedicel combined; hypandrium
not as below --.
Congomochtherus rufinota: Tomasovic 2006: 148 (figs 6 epandrium, 7 gonocoxite & dististylus, 8 hypandrium
, 9 aedeagus).
Arista dorsal; hypandrium
with 12 broad lateral process 11'.
1C, D): With hypandrium
narrow, straight; gonostyle 1.
6-10): syntergosternite slender, semicircular, epandrium wide; surstylus wide rounded with a triangular inner process; hypandrium
narrow; pregonites short narrow subuliform and postgonites in form of a pair of long broad knife-like sclerites, decussate apically; phallus with a W-shaped sclerite and 2 pairs of slender subuliform processes in ventral view; phallapodeme short claviform and oblique backwards.
Male abdomen: Pleuron with large dome-like differentiated area on segment 4 (occupying approximately ventral 3A of pleuron 4); hypandrium
with a very short anterior plate and strong posterodorsal arms connecting to phallic plate, dorsolateral margin of posterodorsal arm with a prominent lobe (Fig.
distinctly longer than wide, with subtriangular apical process.
Hypopygium largely brown, with yellowish brown anal tube; right lobe of hypandrium
Epandrium short (less than half as long as broad in dorsal view), hardly separated into two lobes distally; proctiger well-developed, jutting out far beyond epandrium; gonocoxites well-developed, oval in shape (lateral view), distomedial lobe well-developed, with three sharp medially directed claw-like processes (ventral view); gonostyli well-developed, elongate, straight; hypandrium
slightly shorter than wide (ventral view), broad proximally, tapering to somewhat truncate, slightly bilobed distal end; aedeagus largely hidden from view, straight, weakly sclerotized.
with wide tuft of loose setae; dorso-apical corner of clasping cercus obtuse 3
Epandrium and hypandrium
much elongated and rather large, subequal in length.