oc 



PROCEEDINGS OF THE 



ENTOMOLOGICAL SOCIETY OF WASHINGTON 



VOL. 20 FEBRUARY, 1918 No. 2 



THREE NEW CHALCIDOID EGG-PARASITES. 



BY A. B. GAHAN. 



In this paper will be found descriptions of two species of My- 

 maridae and one species of Trichogrammatidae. 



Family MYMARIDAE. 

 Tribe Gonatocerini. 

 Gonatocerus ornatus, new species. 



This species should be easily recognized by the pallid lines on 

 the head and thorax. No other species known to the writer is 

 thus ornamented. 



Female. Length .9 mm. Head and thorax smooth and polished, only 

 the face below the antennae weakly sculptured; abdomen apparently 

 smooth (wrinkled somewhat in drying). Antennae not quite as long as 

 the body; scape flattened, slightly swollen beyond the middle and rounded 

 at apex, narrowly spatulate in outline; pedicel very slightly longer than 

 broad at apex; funicle gradually thickening fpom base to club; joints one 

 and two of the funicle subequal, slightly longer than broad, together about 

 equal in length to the pedicel and approximately one-third as thick as the 

 pedicel at apex; funicle joint three about one and one-half times as long 

 as thick, shorter than joint four which is twice as long as thick; joints 

 five, six, and seven subequal and each distinctly longer than four; joint 

 eight slightly shorter than seven; club solid and a little longer than the three 

 apical joints of funicle combined; face below antennae with a distinct 

 fold extending from the base of each antenna to the clypeus and converg- 

 ing slightly anteriorly; antennal grooves narrow and shallow but distinct 

 and well separated below, converging above at the front ocellus; pa- 

 rapsiclal grooves impressed; propodeum apparently smooth; forewing 

 moderately broad with dense evenly distributed cilia, the longest marginal 

 cilia equal to less than one-fourth the greatest breadth of wing; subinarni- 

 nal vein with a single stiff bristle basad of the middle; abdomen rather 

 robust, longer than the head and thorax, the ovipositor sheaths extending 

 very slightly beyond the apex of abdomen. General color shining black: 

 the antennal grooves, a narrow line on vertex from lateral ocellus to eye- 



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