TROCHILIUM. 139 



T. cucurbitae Harris. 



Fore wings opaque, lustrous olive brown; hind wings transpa- 

 rent, with the margin and fringe brown ; antennas greenish-black ; 

 palpi pale yellow, with a little black tuft near the top ; thorax 

 olive; abdomen deep orange, with a transverse basal black band, 

 and a longitudinal row of five or six black spots; tibias and tarsi 

 of the hind legs thickly fringed on the inside with black and on 

 the outside with long orange-colored hairs ; spurs covered with 

 white hairs. Expands from thirteen to fifteen lines. 



Larva similar in form and color to those of other species. Lives 



in the pith of squash and pumpkin vines. Forms in the ground a 



cocoon composed of grains of earth cemented by a gummy matter. 



Pupa almost entirely excluded from the cocoon during the last 



transformation. 



North America. 



Harris. 



T. caudata Harris. 



Brown. Male with the fore wings transparent from the base to 

 the middle ; hind wings transparent, with a brownish border, fringe, 

 and subcostal spot; antennae, palpi, collar, and tarsi tawny yellow; 

 hind legs yellow ; end of the tibias and first tarsal joint fringed with 

 tawny yellow and black hairs; tail slender, cylindrical, nearly as 

 long as the body, tawny yellow, with a little black tuft on each 

 side at base. The female differs from the male in having the fore 

 wings entirely opaque; the hind legs black, with a rusty spot in 

 the middle of the tibiae, and fringed with black; caudal tuft of the 

 ordinary form and size. Expands from one inch to one inch and 

 three lines. Larva inhabits the stems of our indigenous currant, 

 Ribes jloridum. 



Harris. 



T. syringae Harris. 



Brown. Fore wings with a transparent line at base; hind wings 

 transparent, with a brown border, fringe, and subcostal spot; an- 

 tennas, palpi, collar, first and second pairs of tarsi, and middle of 

 the intermediate tibiae rust red ; middle of the tibias and the tarsi 

 of the hind legs yellow. Expands one inch and two lines. Larva 

 lives in the trunks of Syringa vulgaris, the common lilac. 



Harris. 



