SUBFAMILY IX. — PHYLIN^. 941 



1058 ( — ). Plagiognathus debilis sp. nov. 



Greenish-yellow, thickly clothed above with conspicuous inclined yel- 

 lowish hairs; tylus, cheeks and lone dark brown, shining; pronotum 

 wholly fuscous-black, male, front half only fuscous-black, female; scutel- 

 lum of the same hue, its extreme tip pale; inner half of clavus and a 

 large ill-defined spot on inner apical half of corium more or less fus- 

 cous; cuneus and embolium pale yellowish-translucent, the former rarely 

 with a vague median fuscous spot; membrane fuscous, veins yellowish; 

 legs dull yellow; hind femora with black dots as in dd of key; front and 

 middle femora each with two rows of small vague brown dots ; tibiae 

 with conspicuous black spots at base of spines; third joint of tarsi and 

 claws fuscous; under surface blackish-bronzed, shining. Joint 1 of an- 

 tenna? black, three-fifths as long as width of vertex, its apical incisure 

 yellow; 2 dull yellow, basal sixth black, apex dusky, three and half times 

 as long as 1 ; 3 and 4 dusky yellow, 3 one-half as long as 2, 4 two-fifths 

 the length of 3. Beak reaching apex of middle coxa?. Length, 3.5 — 

 3.7 mm. 



Marion Co., Ind., June 16 — July 15. Frequent on the sand- 

 bar willow, Salix fluviatilis Nutt. 



1059 ( — ). Plagiognathus punctatipes Knight, 1923, 450. 



Black, moderately shining, clothed with grayish- or pale yellowish 

 pubescence; membrane uniformly fuscous, veins paler; legs pale yellow 

 to fulvous, coxa? fuscous, hind femora with spots as in g of key, spots at 

 base of tibial spines small, obsolete toward apex; under surface fuscous- 

 black, clothed with very fine pale pubescence. Joint 1 of antenna? black, 

 two-thirds as long as width of vertex; 2, yellowish, basal sixth blackish, 

 four times as long as 1; 3 pale yellowish, two-thirds as long as 2; 4 

 dusky, three-fifths the length of 3. Beak reaching middle of hind coxa?. 

 Length, 3.6 — 3.8 mm. 



Ithaca, N. Y., June 27 {Minn. Univ. Coll.) . Recorded only 

 from there and Bloomfield, Pa. 



1060 (— ). Plagiognathus dispar Knight, 1923, 451. 



Fuscous-black, thinly yellowish pubescent; vertex yellowish; cuneus 

 as in key; membrane pale fuscous, paler at middle and near apex of 

 cuneus, veins yellowish to dusky; legs straw-yellow, hind coxa?, except 

 tips, fuscous; front face of hind femora with two rows of minute fus- 

 cous spots, a group of similar spots on apical third of posterior face, 

 spots at base of tibial spines very small; under surface black, fine'y 

 pubescent. Antenna? as in punctatipes, joint 1 three-fourths as long as 

 width of vertex. Length, 3.3 — 3.5 mm. 



Dixon, 111., May 31 (///. Nat. Hist. Surv. Coll.). Ranges from 

 southern New England west to Michigan and Illinois, occurring 

 on hickory. Described as a variety of punctatipes, but afterward 

 (1926, 11) raised by Knight to specific rank on account of 

 slight differences in male genitalia. 



