100 C. p. GILLETTE. 



Synergiis laiise (Fitcb). 



Ci/nips (jiierciis lann' Fitch, Fifth Rep. Ins. N. Y. IS.ig. p. 814. n. 316. 

 Cyuips querc.us lanx O. S., Proc. Eiit. Soc. Phila. i, 1861. p. 62, ii. 10. 

 Oynips quercus lanse O. S., Stettin. Ent. Ze.tg. xxii. 1861, p. 409. n. 9. 

 Cynips qnereus lana O. S.. Proc. Va\X. Soc. Phila. iv, 186", p. ;5o9, n. 4.5. 

 Andrieus lana Ashmead. Trans. Am. Ent. Soc. xii, 1885, p. 295. 

 Sj/iiergns lana Cresson, Synop. Am. Hymen. 1887, p. 180. 

 Si/nergus lanse De Dalla Torre, Cat. Hymen, ii, 1893, p. 111. 



Fitch's very brief description of this species is as follows : 



"Small black flies with white or straw-colorerl heads, antennte and legs, and 

 with shininor smoky yellow abdomens, having a black or blackish cloud occu])ying 

 their hack and sides, the females with Lo-jointed antennje, and their length 0.09." 



I liave two appai'ently typical specimens of this species which I 

 bred from the galls of Andrienx jioccl at Ames, Iowa. 

 To Fitch's description I will add the following : 



The only black on the head is on the vertex and the tips of the mandibles; the 

 only light coloration upon the thorax is along the parapsidal grooves themselves, 

 which are rufous; the mesonotum is moderately shining and very finely and 

 evenly sculptured ; the f.)vese of the scutellum are rather large and shining; the 

 abdomen is black, shading into smoky brown posteriorly and beneath, and is as 

 broad as long and rounded otf posteriorly, not prolonged in a point: the second 

 segment m>t quite covering the third and fourth, the second segment without 

 punctures, the ovipositor sheaths and ventral valve ])romiuently exposed. 



Kyii<'r<;ii<ii villo!«iis (4ill. 



Si/iicnjiis vilhsxs Gillette, Hull. 111. Lab. Nat. Hist, iii, 1890. p. 202, ?. 

 Sj/nerqu.s villofnis De Dalla Torre, Cat. Hymen, ii, 1893, ]). 114. 

 ■'The front, above the insertion of tiie antennge. the vertex, a broad stripe ex- 

 tending over the occiput to the collar, the entire thorax, a broad blotch on the 

 second abdominal segment extending far down at the sides, the tips of the man- 

 dibles, and a spot upon the tergum of the fifth abdominal segment black ; feet, 

 including the coxse, light yellow, orbits and antennae sliglitly rufous, other parts 

 light yellow. Head : face rather finely striate, vertex and (xriput with numerous 

 coarse punctures on a microscopically sculptured surface, antennae 15-jointed, 

 nearly as long as the body. Thorax : mesonotum with fine trnnsverse ridges, the 

 furrows between lieariug coarse, but shallow and somewhat confluent punctures, 

 parapsidal grooves very distinct, median groove narrow and extending but a short 

 distance, parallel lines and lateral furrows not very distinct, pleui-je coarsely 

 aciculatcd below, finely above and with a smooth median spot; scutellum bifo- 

 veate. rather coarsely sculptured, foveas shallow, the sculpturing somewhat ob- 

 scured by pubescence. Abdomen : first joint, as well as petiole of metathorax, 

 fluted, second segment occupying nearly the entire surface of the abdomen, venter 

 rather prominent. Wmgs hyaline, areolet rather indistinct. 



" Described from two specimens ( 9 ) hred from the galls of Acra.'<- 

 pis villosus Gill, taken in Towa." 



