RHODOSOMA. 343 



Genus RHODOSOMA Butler. (Fig. 89). 



Butler, 1877 A, p. 534 ; Roths. & Jord., 1903, p. 601 ; id., 1907, 

 p. 113. 



Genotype : triopus (Westw.). 



Imago. — ** <$Q. Genal process large, triangular, reaching tip 

 of pilifer. Head with an indication of a mesial crest, smoothly 

 scaled like thorax and abdomen. Eye lashed. Palpus broad but 

 rather short, obtuse, resembling the palpus of Macroglossum, 

 but not pointed. Antenna long and slender, setiform, cylindri- 

 cal in §, hook gradually curved ; end-segment short, conical, 

 with a number of long bristles, not produced into a filamentous 

 process. Abdomen flattened, stumpy, appearing truncate, 

 segments short, especially the last ones, sternites emarginate ; 

 spines flat, very strong on tergites and sternites, those of the 

 first row about half as long again as broad, rounded, this 

 armature approaching that of Macroglossum. Merum of mid- 

 coxa not angulate or carinate ; tibiae simple, spurs unequal, 



Fig. 89. — Rhodosoma Butl. 

 A, R. triopus (Westw.) ; B, penis-sheath. 



longer terminal one of hind tibia less than half the first tarsal 

 segment ; this as long as segments 2 to 4 together ; hind tarsus 

 with additional externo-lateral spines ; spines of comb of 

 mid-tarsus slightly prolonged, stout ; pulvillus and parony- 

 chium normal. Wings entire ; hind wing short, cell about half 

 as long again as apically broad, cross-veins oblique, R 2 before 

 centre, R 3 and M 1 almost from a point. 



; ' $. Tenth segment elongate, slender, tergite scarcely 

 curved, apex rounded ; sternite a little broader than tergite 

 and somewhat shorter, with almost parallel sides, apex 

 rounded, the apical edge curved a little upwards and 

 appearing feebly sinuate in distal aspect. Clasper little curved, 

 apex rounded, no friction-scales ; harpe of same type as in 

 Bethera and Cizara, the process nearly as broad as in Cizara 



