740 Cecidomyiidae — Mycetophilidae 



C. poculum O.S. Produces a moderately common, circular, flat stem gall on the 

 leaves of post oak. Millbrook, Aug 24; NYC, Oct. 



C. pudibunda O.S. Inhabits a red-tinged leaf fold on hornbeam. The gall is 

 common and widely distributed. 



C. serotinae O.S. Transforms the terminal buds on young shoots of wild cherry 

 into globose, red-tinted swellings about the size of a cherry. Moderately 

 common and widely distributed; LI: Fishers I., Jan 19, on gall. 



C. tuba Stebb. Vic. Albany, scarce. Inhabits a slender, curved tube 10 to 16 mm. 

 long and about 2 mm. in diameter, occurring on the leaves of Cornus amomum. 



C. urnicola O.S. Produces an urn-shaped, subsessile, pale green, semitransparent, 

 succulent leaf gall on Urtica gracilis. Ithaca ; Trenton Falls, Probably widely 

 distributed. 



C. venae Stebb. Probably identical with Lobopteromyia venae Felt, a species 

 recorded from Nassau. 



C. verrucicola O.S. Produces a subglobular, green or brown, leaf gall on linden. 

 Highland Falls, Nov 14; PNewport, Jl 23. Widely distributed, and occasion- 

 ally very abundant. 



C. sp. Little Falls, Sep 10, galls on Eupatorium ageratoides. 



C. viticola O.S. Produces an elongate, conical, reddish or green leaf gall on wild 

 grape. Canandaigua, Oct 5 ; Highland, rather common. Probably widely 

 distributed in the State. 



C. sp. Hudson Falls, Jl 6, producing gall on Laportea canadensis. 



Family MYCETOPHILIDAE 



SUBFAMILY BOLITOPHILINAE 



BOLITOPHILA Meigen 



B. cinerea Meig. Buffalo, May (MCV) ; Ithaca, May, Sep (Joh) ; Albany, Ap- 

 May (Yg). 



B. disjuncta Lw. Albany, May (Yg). 



B. hybrida Meig._ Wells, Jl (Yg) ; Little Valley, Jl (MCV); Albany, May; Mc- 

 Lean, Je, Sih (Joh). 



B. montana Coq. Ithaca, Sep (Joh). 



Palaeoplatyura Meunler 

 P. johnsoni Joh. Ithaca, Je (Joh). 



Symmerus Walker 

 S. lautus Lw. N. Evans, Jl (MCV) ; Little Valley, Je (MCV) ; Ithaca, Aug (Joh). 



SUBFAMILY DIADOCIDIINAE 

 DiADOCIDIA Ruthe 



D. ferruginosa Meig. Wells, Jl (Yg) ; Erie Co, May-Aug (MCV) ; Ithaca, Aug 



(Jn). 



