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



°E. pullatus Howard. 



Male: length 1.39 mm.; mostly shining black; antenna! pits 

 and the immediate region of the mouth parts honey-yellow ; all 

 coxse and femora black, except tips of femora, which are yellow- 

 brown ; anterior tibiae yellowish, tarsi dusky ; mid and hind tibiae 

 at tip yellow-brown, tarsi dark. 



Possibly a parasite of the trumpet leaf-miner of the apple 

 ( Tisch eria m alifoliella ) . 



°E. atratus Howard. 



Female: length 1.6 mm.; mostly black and shining; face and 

 vertex with punctures; antennae with joints of funicle subequal 

 in length and about as long as wide, club slightly flattened ; pro- 

 notum and mesonotum regularly scaly, with some hairs, scutel 

 finely shagreened and shining, pleurae and hind coxae shining, 

 the latter finely scratched, thorax with a faint metallic luster; 

 front and middle tibiae dusk}^ rather lighter at base; abdomen 

 smooth, rather longer than the head and thorax combined. 

 Male: differs from female only as follows: antennal branches 

 dusky and reaching to base of club. 



Parasitic on Apantcles hyphantrics, A. delicatus and (Lhnneri- 

 um) Campoplex ( ?) validus. 



°E. tischeriae Howard. 



Female : differs from varins as follows : scape of antennae 

 light yellow; metanotum metallic green; front coxae dirty white, 

 tibiae and tarsi the same, mid and hind coxae nearly black, honey- 

 yellow at either end ; veins slightly dusky, not dark brown ; abdo- 

 men with its first segment metallic green, with a continuous longi- 

 tudinal black stripe above, rest of abdomen honey-yellow. 



Bred from larvae of Tischcria solidaginifoUella. 



elachertid;e 



Key to Genera. 



1. Abdomen with a more or less distinct petiole 2 



Abdomen subsessile 4 



2. Prothorax subconical 3 



Prothorax acute Euplectrus p. 467 



3. Posterior tibiae with two spurs; body not metallic; scutel 



without dorsal lines Miotropis p. 465 



Posterior tibiae with one spur; scutel with two dorsal lines; 

 body with at least the head metallic Elachcrtus p. 466 



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