58 



THE CANADIAN ENTOMOLOGIST. 



species, says in a recent letter that he has worked up an in- 

 teresting paper on its economic importance. It is regretted that 

 specimens of P. vejdovskyi could not be secured for comparison 

 with the American form. 



Prosopothrips cognatus sp. nov. Figs. A and B. 



Female. — L ength 

 about 1.2 mm. Head 

 and prothorax dark 

 chocolate brown, nearly 

 black; pterothorax and 

 abdomen orange yellow, 

 the last abdominal seg- 

 ment and the anterior 

 angles of the meso- 

 thorax tipped with 

 brown or gray ; antennae 

 yellow, darkened with 

 brown beyond middle of 

 segment 6; fore legs 

 largely brown, middle 

 and hind legs yellow. 



Head about 1.4 

 times as wide as great- 

 est exposed length, 

 prominently reticulate- 

 rugose, with a dark chitinous line bordering the eyes within; 

 vertex sulcate, two prominent projections overhanging the basal 

 segments of the antennae; cheeks swollen, but without spine-bear- 

 ing tubercle; no macrochaetae present. Eyes not prominent, not 

 protruding, slightly flattened laterally. Ocelli wanting. Antennae 

 one and two-thirds time as long as width of head ; segment 1 

 short, distinctly shorter than 2 and very broad; 2 unusually large, 

 narrowed toward apex and with short, slender pedicel ; 3-5 slender, 

 equal in length, similar in form, each with about four encircling 

 lines of sculpture; 6 slender, longest in entire antenna, with about 

 six encircling chitinous lines; 7 and 8 short and slender, forming 

 a stylus; segment 1 brownish yellow; 2 orange; 3-5 yellow; 6 



Fig. 13. — Prosopothrifis copuatus Hood. A — Head and 

 prothorax, female. B — Right antenna, female. 



