THE CANADIAN ENTOMOLOGIST. 



181 



AN EGG-PARASITE OF THE TARNISHED PLANT BUG, 



LYGUS PRAT EN SIS L. 



BY C. R. CROSBY AND M. D. LEONARD, ITHACA, N. Y. 



On October 3, 1913, while examining flower-heads of the daisy 

 fleabane, Erigeron ramosus, we found one egg and two egg-shells of 

 the tarnished plant bug, Lygus pratensis, with the tip slightly in- 

 serted in the receptacle. The flower-head was placed in a vial, 

 and in a few days the egg took on an abnormal blackish colour. 

 On October 7 a hymenopterous parasite emerged. From other 

 flower-heads placed in a breeding-cage two other parasites of the 

 same species were obtained on Oct. 21 and 27. This parasite is 

 apparently undescribed. 



Anagrus ovijentatus, n. sp. 



Female. — Length .64 mm., abdomen .36 mm. General colour 

 black; eyes dark red; antennae blackish, except pedicle below and 

 scape at tip, which are dull yellowish. The legs dull yellowish; 

 coxae dusky; femora broadly banded with dusky; middle and hind 

 tibiae dusky except tip and base; last tarsal segments dusky. 

 Abdomen black, very slightly tinged with yellowish at the tip. 





Fig. 20. — A. ovijentatus, wing. 



Fig. 19. — Ana ;i-us ovijentatus. 



The relative length of the antennal segments is indicated by 

 the following ratio: scape 4, pedicle 3, first funicle 1, second 2, 

 third, fourth, fifth and sixth 3, club 5. 



The ciliation of the wing is shown in figure 20. 



Described from three females, Ithaca, N.Y., Oct. 7, 21, 27, 1913 



May, 1914 



