118 Bulletin 223. 



Four of these little parasites are little Ichneumon flies and two are 

 Braconids. Four of them were not new to science, but one, and 

 possibly two, proved to be new species. The one which we reared in 

 largest numbers and which thus seems to be the most effective check 

 on the grape-berry moth has been burdened with our name. It is 

 now known to science as Thymaris sling erlandana Ashm. and is shown 

 much enlarged in Fig. 23. Dr. Ashmead reports that this is the first 

 American species to be described in this genus. 



The following notes regarding these parasitic enemies of the grape- 

 berry moth are worth recording: 



In 1869, Riley found two maggots destroying the caterpillars in Missouri, 

 but he failed to breed the adult parasite. We find no other record of any enemy 

 of the insect in America. Riley's description of the habits of this parasite does 

 not fit any of those we have seen, but comes nearest to one of the Braconids. 



Bracon scrutator Say. (Boston Journ. Nat. Hist., I, 254). The maggot of this 

 little Braconid parasite seems to feed externally on the nearly full-grown cater- 

 pillars of the second brood at work in the green fruit in August. Their little, 

 white cocoons are spun in the infested berries. The adults emerged in about 

 two weeks on the following dates: Aug. 28, Sept. 1, 4 and 10. 



Bathymetis sp. near terminalis Ashm. We reared two females of this com- 

 paratively large parasite (Fig. 12, p. 103) from hibernated pupa; on May 31. The 

 grape-berry moth caterpillar had pupated and the parasite's cocoon filled that 

 of its host. Dr. Ashmead reports our specimens as probably undescribed, but 

 possibly terminalis, which was described from a male only. 



Glypta animoso Cress. (Trans. Am. Ent. Soc, III, 154). One specimen of 

 this Ichneumon emerged from an over-wintered cocoon on June 4. It spun a 

 very thin cocoon and had evidently killed the caterpillar, as no trace of a pupa 

 was found. The recorded hosts of this parasite are Paedisca scudderiana, two 

 other Tortricids and a Pyralid. 



Glypta vulgaris Cress. (Trans. Am. Ent. Soc, III, 157). Two specimens of 

 this common parasite emerged on August 25 and 27 from thin, white cocoons 

 nearly filling their host's cocoon in a wild grape. Like Glypta animosa, this 

 species evidently kills the caterpillar, but it works on the summer brood. It 

 is also parasitic on a species of Gelechia and on a Pyralid {Margaronia quadri- 

 stigmalis) . 



Urogaster canarsiae Ashm. (Ent. Soc. Wash., IV, 127, with figure). Found 

 the cocoons of this probable parasite in the webbed blossoms where grape-berry 

 moth caterpillars had worked. Two specimens emerged on July 3 and 7. Evi- 

 dently parasitic on the first or spring brood. Its other known host is the Pyralid 

 {Canarsia hammondi). 



Thymaris slingerlandana Ashm. (Can. Ent., XXXVI, Nov., p. 333). From 

 August 15 to 27, we reared 17 specimens of this Uttle back Ichneumon with 

 orange-colored, light yellow-banded legs from the cocoons of the grape-berry 

 moths working in both wild and cultivated grapes. Its cocoon occupies about 

 half the space inside the host's cocoon, and evidently the caterpillar was its 

 victim. 



IJThe European grape-berry moth {Polychrosis botrana) is preyed upon by eight 

 Ichneumons closely alUed to our American parasites, one Dipteron, one spider 

 and two fungous diseases (Nuove Relazioni R. Stazione di Entomologia Agraria 

 di Firenze, Serie Prima, No. 1, p. 152-162). 



