\ 



MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 305 



6. Head and thorax polishctl. 



Anteniui' and lei^s hlac]<, pcdird nliont as long a« the lirst anil second liinichir 

 joints nuited, jialc at tip. tho iirst small, the st-cond a little cnrvod, 

 club O-jointed, the joints, except the last, a little longer than thick, 

 the last coue-shaped, one-third larger thau the penultimate. 



P. CULOlJADKN.SIS. 



Autenua- aud legs rufo-piceous. 



I'edicel uot as long as the tirst aud second iuniclar joints unittMl, the second 

 large, dilated, curved, the joints of cluh long' r thau wide, the last 

 twice as long as the penultimate P. filicohnis. 



Pedicel as loug as the first and second Iuniclar joints united, the second 

 swollen, the joints of the club twice as loug as thif^k, the last uot 

 twice as long as the penultimate P. califokmicus. 



Polygnotus salicicola, si>. uov. 



S 9 . Length, O.SO to 1.40""". Polished black ; head thrice as wide as 

 thick aiitero posteriorly, the vertex posteriorly strougly transversely 

 aciculated, face smooth. Anteniue 10-joiiited, black, the tlagvlluiii not 

 <]uite twice as long as the scape; pedicel as long as the tirst and second 

 iuniclar joints together but stouter, the tip pale; joint 1 of funicle 

 very small, yellowish, not as long as thick; vsecond scarcely twice as 

 long as thick, third shorter, fourth no longer than the third but a little 

 stouter, rounded basally; club joints, except the last which is longer 

 than the preceding, as wide as long, truncate at tips and rounded bas- 

 ally. Thorax ovoid, the collar anteriorly slightly microscopically sha- 

 greened, mesonotal furrows most frequently entirely wanting, seldom 

 slightly indicated posteriorly, the base of the parapsides, just in front 

 of tlie scutellum, delicately punctate and sparsely pubescent. Scutel- 

 lum transversely highly, convex, polished. Metapleura nearly bare, 

 delicately sculptured. Tegula' black. Wings hyaline, iridescent, pu- 

 bescent. Legs black, the tibia* and tarsi i)iceous or brown-black. 

 Abdomen very slightly larger than the thorax, jxdished, the petiole 

 fluted at base, the second segment with two slight foveohe at base 

 which are faintly aciculated. 



The S is usually the smaller, the abdomen being scarcely as long as 

 the thorax, and broadly rounded behind, while the differences in the 

 anteunai readily distinguish it. The tlagellum is covered with a rather 

 dense, short, white pubescence; the ])edicel oval, not longer than the 

 second funiclar joint; tirst funiclar joint moniliform; second thickened 

 at tip, and longer than any of the club joints except the last; club joints, 

 except the last, not longer than thick, the hist pointed, fusiform, twice 

 as long as the peuultinuite. 



Habitat. — Los Angeles, Cal. 



Types in National Museum. 



3red by A. Koebele fi'om a Cecidomyiid gall on the midrib of willow. 



21899— No. 15 L'O 



