72 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. 7& 



abdomen more broadly, black; vestiture, sculpture, and the head di- 

 mensions, as described for female. 



Type localit'if. — Gaviota, Calif. 



ry;?^.— Female, U.S.N.M. No. 42246. 



Remarks. — The known material of this species consists of the type., 

 the allotype, and 11 female paratypes; the first two, with three para- 

 types and the front wing of a female paratype on a slide, are depos- 

 ited in the collection of the United States National Museum, and the 

 remainder are in the collection of the writer. All these specimens 

 were reared by Doctor Kinsey from the galls of Andricus pomifor^nu 

 rossi (Kieffer) on California live oak {Querent agrifolia) at Gaviota, 

 Calif., the gall makers issuing on March 5, 1920. 



29. DECATOMA QUERCI-LANAE (Fitch) 



Plate 2, Figueb 26 



Spalangia querci-lanae Fitch, Ann. Rep. New York State Agr. Soc., p. 816, 1859 ; 



5th Rep. Nox. Ins. New York, p. 36, 1859. 

 Decatoma querci-lanae Ashmead, Trans. Amer. Ent. Soc, vol. 14, pp. 196, 197, 



1887. 

 Decatoma hyalipennis Walsh, Amer. Ent. and Bot., vol. 2, no. 10, p. 301, 1870. — 



Provancheb, Additions k la faune hymenopterologique, p. 193, 1887. 

 Decatoma simplicistigma Walsh, Amer. Ent. and Bot., vol. 2, no. 10, p. 301, 



1870. 

 Decatomu fiavicollis Walker, Ent. Mag., vol. 2, p. 156, 1834. Original descrip- 

 tion. A European species. — Mate, Verb. Zool. Bot. Ges. Wieu, Band 55, 



pp. 532-534, 1905. Redescribed. 

 Decatoma fiavicollis Ashmead, Trans. Amer. Ent. Soc, vol. 12, p. xiii, 1885. An 



American species. 

 Decatoma fioridana J. B. Smith, Ent. Americana, vol. 2, p. 19, 1886. New name 



for fiavicollis Ashmead. 

 Decatoma micJiigamca Giba-ult, Proc U. S. Nat. Mus., vol. 58, p. 209, 1920. 



Similar to foliatae Ashmead in size, form of the head, and number 

 of setae on the submarginal vein, but differs from it in having even 

 the coxae all yellow and the thorax with a more or less developed 

 irregular dorso-median longitudinal black band, while foliatae has 

 most of head, the prescutum, scutel, propodeum, and most of abdomen 

 black. Specimens having scapulae more or less black are being 

 regarded as foliatae. 



Fenidie. — ^Length, 2.5 to 3.5 mm., mostly about 3 mm. ; fairly robust, 

 colors yellow, brownish yellow, and black, relative degrees of each 

 variable; head and thorax honey yellow; scape almost concolorous 

 with head, basal two-thirds of pedicel brown-black, its apex honey 

 yellow, flagellum chestnut-brown ; head with only vertex and occiput 

 black ; black of vertex narrowly, or sometimes barely, inclosing ocelli, 

 or sometimes extended to include disk of vertex but very rarely 

 reaching eyes laterad or farther than apex of antennal scrobe or 



