738 Cecidomyiidae 



I. hartmania Felt. Albany, Ap 15, near a decaying hickory stump. ; 

 I. hudsoni Felt. Poughkeepsie, Ap 19, on red cedar. 



I. infirma Felt. Albany, Je 15, on Syringa. I 



I. nixoni Felt. Albany, Jl 6, on New Jersey tea. 1 

 I, opuntiae Felt. Reared from discolored, more or less decaying areas on various 



species of Opuntia collected in the NY Botanical Gardens at Bronx Pk. ' 



I. paucifila Felt. Albany, Je 15, on Deutzia. 



I. piperitae Felt. Nassau, Sep 4, reared from small, enlarged terminal buds on 



peppermint (Mentha piperita). 

 I. pugionis Felt. Nassau, May 4, reared from chestnut and maple bark infested 



with numerous Miastor americana Felt larvae. 

 I. putrida Felt. Reared from decaying birch wood inhabited by numerous larvae 



of BoUtophila cinerea Meign. 

 I. quercina Felt. Albany, Je 21, on swamp white oak. 

 I. ramuli Felt. Albany, May 25, reared from a small, monothalamous, almost 



imperceptible, twig enlargement on Cornus paniculata. 

 I. recurvata Felt. Poughkeepsie, Je 21, in a trap lantern. 

 I. ruricola Felt. Nassau, Je 15, on sedge. 

 I. sanguinia Felt. Nassau, Je 24, on fern. 

 I. setariae Felt. Albany, Aug 25, reared from seeds of the common fox-tail grass 



(Alopcciirtis pratensis). 

 I. spiraeaflorae Felt. Albany, Aug 27, reared from slightly enlarged, reddened 



flowers of Spiraea salicifolia. 

 I. tecomiae Felt. Albany, reared from larvae distorting and rolling leaves of the 



trumpet vine. 

 I. terrestris Felt. Poughkeepsie, Je 21, in a trap lantern. 

 I. tolhurstae Felt. Albany, Je 30, on sumac. 



I. tritici Felt. Presumably the wheat midge, a well-known pest of wheat in earlier 

 years and one widely distributed in this State and probably throughout the 

 wheat-growing areas of the US. Belle Isle (NYS Rept 15). 



I. verbenae Bt. Karner, JI 20, from rolled terminal leaves of Verbena urticaefolia. 



Retinodiplosis Kieffer 



R. albitarsis Felt. Round L., Je 24, reared from Pinus strobus. 



R. inopis O.S. Produces obscure, subcortical swellings in the smaller branches of 

 scrub pine (Pinus rigida and P. virginiana) . Common in vie. of Albany. 

 Presumably widely distributed. 



R. resinicola^ O.S. The Pitch Midge. The common, widely distributed species 

 inhabiting exuding masses of pitch. The larvae are remarkable because of 

 their living within this resinous medium. Karner; Mechanicville, Sep. 



Odontodiplosis Felt 



O. americana Felt. Albany, Jl 3 on alder, Jl 24 on low blackberry. 



O. karnerensis Felt. Karner, May 16. 



O. montana Felt. Newport, Jl 27, on hemlock, Yg. 



