No. 2317. FIVE TRIBES OF ICHNEUMONINAE—ROHWER. 415 



apically; onychia prominent; nervellus reclivous, broken at about 

 the middle. 



The species of Grotea are all very closely allied and the only means 

 of distinguishing them are slight differences in color. There are, 

 however, some differences in the shape and size of the basal area 

 and it may be that when more specimens are available it will be 

 possible to state definitely if these differences can be considered as 

 specific. It would not, however, be surprising if more material would 

 prove that all the species should be combined. The following key is 

 based entirely on the females, as males of only one of the forms are 

 in the collection. 



TABLE TO THE SPECIES. 



1. Abdomen brownish doraally, especially apically, wings without a dusky spot. 



anguina Cresson 

 Abdomen uniformly ferruginous, not darkened apically 2 



2. A dusky spot along apex of radial vein .fulva Cameron 



No dusky spot along apex of radial vein 3 



3. Length 12 mm.; uniformly pale honey-yellow; wings clear hyaline with contrast 



ing black venation mexicana Cresson 



Length 17 mm. ; with some yellowish and blackish markings on a ferruginous sur- 

 face; wings very slightly dusky californica Cresson 



GROTEA ANGUINA Cresson. 



Grotea anguina GressO':-:, Proc. Ent. Soc. Phila., vol. 3, 1864, p. 398.— Graenicher, 

 Ent. News, vol. 16, 1905, p. 44. 



Type.— Cat. No. 1533, Acad. Nat. Sci. Philadelphia. 



In the type of this species the basal area is about twice as long as 

 the basal width and narrows apically. This is the shape of the basal 

 area of all the specimens in the national collection, but in the para- 

 type female (No. 1533.2) which comes from New York, the basal area 

 is fully twice as wide as long and not convergent posteriorly. 



Distribution. — Grotea anguina is represented in tlie National collec- 

 tion by females only. These come from the following localities: 

 Falls Church, Virginia (N. Banks) ; Beltsville, Maryland (J. R. Mal- 

 loch) ; Ocean Grove, New Jersey; New York; Hartford, Connecticut; 

 St. Louis, Missouri (Phil Rau) ; Brownsville, Texas (C. H. T. Town- 

 send). Cresson records the species from New Jersey (type locality) 

 and New York, while Graenicher records it from Wisconsin. 



Host. — In the original description Cresson records the rearing of 

 this species "from a Rasberry stem, together with a small species of 

 Grahro" and in an interesting paper in 1905 Graenicher ^ records it as 

 a parasite of Ceratina dupla Say. According to Graenicher this 

 species is both carniverous and phytophagus as it consumes both 

 bee larvae and the ''bee-bread" stored by the mother bee. Graen- 

 icher also notes that the Grotea larva destroys two or three bee cells. 



> Ent. News, vol. 16, 19C5, p. 44. 



