302 FAUNA HAWAIIENSIS 



DiRANCHis Forster. 

 1869. Diranchis Forster, Verh. zool.-bot. Gesell. Wien, xix, p. 360. 



Polished black. 



Legs dark red, the coxae and sometimes more or less of the femora, especiall)' 



basally, black ; marginal cell open all along the front margin (/) D. mojtticola. 



Legs, including coxae, red, the hind tarsi fuscous ; marginal cell along the 



apical half or more open (2) D. rufipes^ 



( I ) Diranchis monticola, sp. nov. 



$. Length 2-4 to 2-6 mm. Polished black, the legs dark red, the coxae and 

 sometimes more or less of the femora, especially basally, black ; wings hyaline, or at 

 most with a faint tinge, the veins brown, the marginal cell open all along the front 

 margin. 



The antennae are 13-jointed, very sparsely pilose and reach to the base of the 

 abdomen, the flagellum being very slightly thickened toward the apex ; flagellar joints 

 3 to 10 moniliform, fluted, the third the smallest joint a little shorter than the second, 

 the first joint being long, subcylindrical and nearly as long as 2 and 3 united, the last 

 joint ovate and longer than the penultimate. The scutellum is striate at the sides, the 

 cup being large oval, its disk not flat, but subconvex, with a round fovea posteriorly. 

 Metathorax rugulose with a median carina, above bare, at the sides pubescent. The 

 abdomen is not longer than the thorax, blunt at apex and with a distinct woolly girdle at 

 base. 



Hab. Molokai Mts. (4000 feet), taken June 15. 



(2) Diranchis riifipes, sp. nov. 



%. Length 2 mm. Polished black, the legs red with hind tarsi fuscous ; wings 

 hyaline, the veins rufo-testaceous, the marginal cell open along the front margin for 

 more than its apical half. 



The antennae are 13-jointed, sparsely pilose and extend to the middle of the 

 abdomen, being somewhat longer than in the preceding species ; the first joint of the 

 flagellum is the longest joint, cylindrical, and about one-third longer than the second ; 

 the second and the following joints are elliptic oval, fluted and not quite thrice as long 

 as thick. 



The scutellum is rugose at the sides, the cup being elongate oval and with a fovea 

 posteriorly and some microscopic punctures along the lateral margins. The metathorax 

 is wrinkled and slightly produced into a little neck posteriorly, its disk being bicarinate. 



