Il6 ENTOMOLOGICAL NEWS. [April, '04 



Two Species of Hydroptilidae. 



BY NATHAN BANKS. 



The following two species of Hydroptilidse occur commonly 

 around Washington, D. C., and will be included in list of local 

 forms. The form described by Chambers as a Tineid moth 

 under the name of Clymene (Zgerifasciella has been referred to 

 this family ; it is, however, I think, a Hydropsychid, and has 

 four spurs on the middle tibiae, and the hair of wings is not erect. 



Orthotrichia americaua n. sp. 



Head with a dense tuft of snow-white hair between eyes, a broad 

 white median stripe on the thorax, and the anal region of forewings gray- 

 white ; so that when the wings are closed 

 there is a median white dorsal stripe the 

 entire length. Antennae wholly pale 

 whitish ; legs pale, unmarked, spurs o, 3, 

 4 ; hind tibiae with long white fringe be- 

 hind. Wings acute, anterior pair brown, 



ORTHOTR.CH.A AMERICANA, genitalia. with Some white hairs ' mostl y forming 



several white spots near costal margin 



toward tip. Hind wings narrow, with long pale-gray fringe ; hair of 

 abdomen long and appressed. The male shows the long, two-jointed 

 penis, as in the common European species, and a black ventral plate, 

 hid in dense hair. Expanse, 4.8 mm. 



Many specimens from Washington, D. C., in July and Aug. 



Allotrichia macnlata n. sp. 



Head with tufts of white hair over bases of antennae and on the vertex ; 

 also on the lateral lobes of thorax. Ocelli present. Antennae pale on 



t basal half, then wide black band, then a 

 narrow white band, then a broad black 

 one, with a narrow white tip. Legs pale, 

 anterior tibiae and tarsi marked with 

 brown on the outer side ; hind tibiae with 

 long white fringe behind ; spurs o, 3, 4. 

 Wings dark brown, a white spot on costal 

 third, one at pterostigma, a smaller one 



ALLOTRICHIA MACULATA, genitalia. near lhe tj P. three on posterior margin. 



one near middle, and one on apical 



fourth ; there are black spots adjoining most of the white ones ; and two 

 other black patches, one at tip, and one on posterior margin near tip. 

 Hind wings with gray fringe, black around the tip. Expanse, 5 mm. 



Specimens from Falls Church, Va. , in August and vSeptember. 



