378 



BEDrviiD.^:. 



Genus RIHIRBUS. 



Rihirbus, SfSl, Step. cut. Zeit. xxii, p. 129 (1861); id. Hem. Afr. 

 iii, p. 49 (1865) ; En. Hem. iv, p. 9 (1874). 



Type, R. trochantericus. Stal. 



Distribution. Oriental Region. 



Head a little shorter than pronotum, with a spine behind, the 

 base of each antenna ; first joint of antennae almost as long as 

 head, pronotum, and scutellum together ; rostrum \\\t\\ the tirst 

 joint a little longer than the other two joints together ; anterior 

 lobe of pronotum posteriorly obtusely bi-tuberculated, lateral 

 angles of posterior lobe distinctly straightly toothed ; anterior 

 trochanters tumid ; apices of the anterior tibia) incurved and 

 armed with a long tooth. 



1312. Rihirbus trochantericus, StSl, Stett. ent. Zeit. xxii, p. 132 

 (1861) ; id. Of v. Vet.-Ak. Fork. 1870, p. 677. 



Rihirbus dentipes, Moi/i; Verh. z.-b. Ges. Wien, xv, p. 437 

 (1865). 



Vars. niger, scutellaris, ruficeps, vufipenuis, rufidorsis, tibialis, 

 semiflavus, luctuosus, Stal, Ofv. Vet.-Ak. Fiirh. 1870, p. 677. 



Var. testaceus, Rent. Act. Soc. Sc. Fenn. xii, p. 279 (1881). 



" Black, sparingly greyishly seri- 

 ceous ; head beneath and collar 

 near middle, two basal tubei-cles 

 and a spot on each side of an- 

 terior pronotal lobe, lateral and 

 posterior margins of posterior 

 pronotal lobe, apex of scutellum, 

 some indeterminate spots behind 

 middle of corium, trochanters, two 

 obsolete and incomplete annula- 

 tions to anterior femora, sternum, 

 and abdomen pale reddish-testa- 

 ceous ; prosternum, large lateral 

 spots to meso- and metasterna, 

 and lateral fascias to abdomen 

 beneath, anteriorly terminating 

 in a greyish-sericeous line, black." 

 This is Stal's description of a 

 typical Ceylonese specimen. The 

 vars. in this fauna, which I have examined, are : — 



Var. a. Sanguineous ; head (excluding base and under surface), 

 antennae, rostrum, legs, lateral areas of meso- and metasterna, 

 and transverse fasciae to abdomen black ; intermediate and pos- 

 terior femora with a distinct ochraceous annulation. 



Var. b. Luteous, a spot behind eyes, antenna;, apical angles of 

 corium, membrane, apices of femora, tibiae and tarsi, apex and 

 apical lateral margins of abdomen black. 



Fig. 240. — Eihirhtis frochantericus 



