MONOGRAPH OF THE NORTH AMERICAN PROCTOTR i PID.«. 107 



TRICHOSTBRESIS Fiirstor. 



Hyiii. Stua., n, p. itT (1X56). 

 riiUhoneurn Tlioins., Ofv., 1858. 



(Type T. glabra Boh.) 



Head transverse, the face, seen from before, not longer than wide, 

 the occipnt margined; oeelii 3 in a curved line; eyes broadly oval, not 

 hairy. 



Antenna* inserted just above the clypeus, 11-jointed, subfiliform, the 

 scajte 3 or 4 times as long as tlie first funiclar joint, the ])edi('el longer 

 than thick, the joints beyond the third short. 



Maxillary palpi 5-jointed; labial palpi 3-jointed. 



jVIandibles bidentate. 



Thorax ovoid, the prothorax not visible from above: mesonotum not 

 or scarcely narrowed anteriorly, with 3 distinct impressed lines; scutel- 

 luni large, subconvex, longer than wide, rounded posteriorly; meta- 

 thorax short, rounded posteriorly, unarmed, the spiracles large, orbi- 

 cular. 



Front wings entirely bare, without pubescence, with a large oval 

 stigma and a short, almost straight, stigmal vein, which is usually 

 sliorter than the stigma; no parastigma. 



Abdomen ovate, smooth, the second segment the largest, occupying 

 about half the length of the abdomen. 



Legs not pilose. 



The non-pubescent wings will distinguish the genus from Lygocerns 

 an<l Megaspilu.s, with which it is most closely allied. 



Only one species, closely resembling the European T.ylaher Boheman, 

 is known in our fauna. 



Trichosteresis floridanus Ashm. 



(PI. VI, Fig. 5, 9.) 



Ent. Am. in, p. 98; Cress. Syn. Hym, p. 313. 



5 . Length 2.5""". Black, shining, finely alutaceous. Antennae 

 11 jointed, dark brown, the first flagellar joint a little longer than the 

 pedicel, the following joints, except the last, scarcely longer than thick, 

 the last c<mic. Legs piceous black, the trochanters, knees, tips of 

 tibiic, an«l the tarsi dai-k honey-yellow or reddish. Wings clear hyaline, 

 without pubescence, the stigma large, semirotund, brown, the stigmal 

 vein not quite as long as the stigma. 



Habitat. — Jacksonville, Fla. 



Type in Coll. Ashmead. 



LYGOCERUS Forster. 



__=,_ „L__^.__-:^;. Hym. Stud., n, p. 97 (1856). -_.I^__„-^_^_^ _,,_'...^ ■ 



rprai>/iro» ThoniH., 5fv. 1858, p. 287. 



(Type L. ramiconiln Boh.) 

 Head transverse, seen from before, the face broader than long, the 



