4i8 



ENTOMOLOGICAL NEWS 



[Nov., 'l2 



A new Tropical Gonomyia (Tipulidae, Dipt.). 

 By Charles P. Alexander, Ithaca, X. Y.* 



The species described herein is referable to the manca 

 group of Gonomyia Meigen, which, in a more extensive dis- 

 cussion of the genus published elsewhere, I have recognized as 

 belonging to the subgenus Leiponeura Skuse. This subgenus 

 is represented in America by the following species : manca 

 O. S. ; pleiiralis Will. (Atarba) ; puella Will. (Atarba) ; alexan- 

 deri Johns. (EUiptera), and the present species. 



This form is closest to pleiiralis,'\ from which it differs in 

 coloration and, fundamentally, in hypopygial characters. 



Gonomyia (Leipcneura) amazona sp. n. 



Wings with cord margined with brown ; legs black. 

 9 — 'Length, 5.4-5.5 mm. ; wing, 3.8-3.9 mm. Fore leg, femur, 2.4-2.65 

 mm. ; tibia, 4.2 mm. Hind leg, femur, 3-3.2 mm. ; tibia, 4-4.05 mm. 



$ 5' — Head. — Rostrum and palpi dark brownish-black; antennae, 

 basal segments greatly swollen, orange ; flagellum with the three or 

 four basal segments almost white, apical flagellar segments dark 

 brownish-black. Front, vertex and occiput, pale yellowish white. 



?V? 



^ 



Wing of Gonomyia {Leiponeura) amazona, n. sp. 



Thorax. — Mesonotum, praescutum very light yellowish orange; the 

 lateral margins of the sclerite broadly whitish, separated from the 

 bright color of the dorsum by an indistinct brownish line; scutum 

 brownish-orange, almost concolorous with the prsescutum, scutellum 

 and postnotum very pale, almost white. Pleurae almost white ; a broad 

 band extending across the pleural sclerites, beginning on the gense of 

 of the head, continuing back to the abdomen ; the dorsal and ventral 

 margins of this band are darker, deep brown ; the ventral mark runs 

 through the halteres, the rest of the band suffusing the mesonotal 

 praescutum with light brown ; a narrow, more or less dark colored, 



* Entomological Laboratory, Cornell University. 



t VVilliston, Trans. Ent. Soc, Lond. (.1S96) ; p. 289; pi. 10; lig. 61. 



