566 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



men longer than the head and thorax together. Length 2.5-3 

 mm. 



This species is parasitic on the drone-fly or chrysanthemum 

 fly (Eristalis tenax). 



Waterbury, 28 July, 1879, 18 May, 1884 (W. H. P.). 



Ashmeadopria Kieffer. 



A. carinata Thomson. 



Black, more or less woolly. Antennae, mandibles, coxae, and 

 thickened parts of femora and tibiae piceous or brown-black ; rest 

 of legs rufous. Abdomen not longer than the head and thorax 

 united. Length 2.5 mm. 



Trichopria Ashmead. 

 Key to Species. 



1. Antennal club 5-jointed 2 



Antennal club 4-jointed 4 



Antennal club 3-jointed 7 



2. Antennae black carolinensis 



Antennae reddish or rufous at base 3 



3. Scutellum unifoveate pentaplasta 



Scutellum bifoveate rufipes 



4. Antennae and legs in great part piceous or black 5 



Antennae except club, and legs, rufous or yellowish 6 



5. Abdominal petiole not or scarcely longer than thick popenoei 



Abdominal petiole distinctly longer than thick colon 



6. Antennal club entirely black virginica 



Only the three terminal joints of the club black tetraplasta 



7. Legs uniformly reddish yellow erythropus 



Legs piceous, tarsi and joints lighter agromyzae 



T. pentaplasta Ashmead. 



Black. Antennae, except the club, and legs reddish yellow. 

 Pedicel a little shorter than the first flagellar joint. Antennal 

 club black, the first joint oblong, second, third and fourth quadrate, 

 equal, the fifth longer but not thicker. Length 1.5 mm. 



T. popenoei Ashmead. 

 Black and shining, including antennae ; legs with trochanters, 

 base of tibiae, and- tarsi pale rufous or piceous; antennal club of 

 female with first joint small, rounded ; second larger, cup-shaped ; 

 third quadrate. Length 1.5 mm. 



