300 R. OSTEN SACKEN. 



These galls, collected by me iu September 1867, near Brooklyn, L. I., 

 on SoUdayo altlssima, very soon gave me several specimens of the fly. 



Asphondylia monacha n. sp. — Nigra, tarsorum basi nivea. 



Black, basis of tbe tarsi snow-white. 



Body blackish, clothed with black hairs (dry and somewhat faded sjiecimens 

 look brownish, with an admixture of yellow hairs); feet with a deep black, ap- 

 pressed pubescence; the short first tarsal joint and the basis of the second are 

 snow-white; knees likewise whitish. Wings clothed with blackish hairs, espe- 

 cially dense along the anterior border ; the venation shows nothing extraordin- 

 ary, being like that of Cecidomyia or Diplosis {Monor/raphs etc., 1, page 174, fig. 

 1 and 2), that is, it consists of three veins, the last of which is forked; the second 

 vein is nearly straight and ends almost in the middle of the apex of the wing ; 

 the anterior branch of the fork of the third vein is concealed in a fold, running 

 backwards to the root of the wing, which produces the apjDcarance as if there 

 were four longitudinal veins (somewhat like fig. 5 on the above quoted page of 

 the Monographs) ; in order to perceive the real direction of the anterior branch 

 of the fourth vein a very close examination of a denuded wing is necessary. 

 The antennae are 2 -f- 12 jointed, filiform, pubescent; the joints of the flagel- 

 luni are cylindrical, of nearly equal, gradually diminishing length up to the 

 ninth; the tenth is smaller than the ninth ; the two last joints, the eleventh 

 and twelfth, taken together are about equal to the tenth in length; they are 

 sluirt, button shaped. Halters black. 



I have two male and a female specimens before me, which I regret 

 not to have described when they were alive; I merely took a note rela- 

 tive to the structure of the antennae of one of the specimens, but forgot 

 to observe its sex. As described by me, the antenna of A. monacha is 

 exactly like that of J., sarothamni 9 figured by Winnertz (Liiinsea Ento- 

 mologica Tab' iv, f. 2 h); the antennae of the male of this species have 

 one joint more, that is, 2 -f 13 joints. Owing to the present dry 

 condition of my specimens I am unable to say whether the same differ- 

 ence exists in A. monacha. My female specimen shows, at the end of 

 the body, a long, yellowish, almost cylindrical ovipositor, nearly like 

 that of ^4. sarothamni, figured by Winnertz (1. c. Tab. 1, f. 15). But 

 it does not show the long, needle-shaped, horny organ which appears 

 on Mr. W. figure as protruding beyond the cylindrical joint of the ovi- 

 positor, and is also mentioned iu the description. The character men- 

 tioned by Mr. Winnertz (1. c. p. 185) as belonging to AsphonJi/lia, 

 that " the second longitudinal vein reaches the margin beyond the apex 

 of the wing," does not seem to be essential to the genus, as it is not to 

 be found in A. monacha. 



The pupa, immediately before the exclusion of the fly, extricates it- 

 self from the gall and falls to the ground. In this Asphondt/lia mona- 

 cha SigAm differs from Cec. solklaginis ; the extremely light and fra- 

 gile pupa case of the latter remains hanging on the outside of the gall 



