140 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Parker, July 14, 1909, C. A. H., 1 female. All specimens, with 

 the exception of the single female from Olney, which was taken 

 on an apple leaf, were found on the under surface of hickory 

 leaves, sometimes in abundance. 



Type locality ; Parker, Illinois. 



The antennal coloration is distinctive. Superficially the 

 species bears a close resemblance ioBaliothrips basalts Shull. 



SUBORDER TUBULIFERA HALIDAY. 

 FAMILY PHLCEOTHRIPID^E UZEL. 



Zygothrips pallidus, new species. (PI. VI, figs. 1, 2.) 



Female (forma brachyptera). Lengthabout 1.6 mm. Color clear, bright 

 lemon-yellow, with antennal segments 7 and 8 shaded with brown, and 

 apical three-fourths of tube abruptly nearly black. (By reflected light the 

 legs and antenna? appear darker, due to the absence therefrom of the 

 yellow hypodermal pigment, which is very dense in the other regions of 

 the body.) 



Head about 1.4 times as long as wide, very slightly broadest at basal 

 fourth, thence evenly narrowing to eyes and base; vertex elevated, al- 

 most overhanging, evenly declivous; dorsal and lateral surfaces without 

 sculpture, the spines few and very inconspicuous; postocular bristles short, 

 two-thirds as long as eyes, blunt but not capitate. Eyes about one-third 

 as long as head, slightly protruding, nearly prominent. Anterior ocellus 

 scarcely overhanging, the posterior pair opposite anterior third of eyes. 

 Antennae slightly more than one and one-half times as long as head, rather 

 stout; segment 1 nearly as broad at base as long; 2 stout, globose; 3 much 

 narrower than 2, stout, swollen just beyond the abrupt pedicel; 4 clavate, 

 longest in entire antenna, nearly as stout as 2; 5-7 clavate, sucessively 

 decreasing in length and breath; 8 conical, twice as long as wide, more than 

 two-thirds as wide at base as apex of 7; sense cones short, weak, transparent, 

 barely visible. Mouth cone blunt, much shorter than width of head, reach- 

 ing about to middle of prosternum; labrum not attaining labium. 



Prothorax about as long as width of head and (inclusive of coxae) about 

 one and two-thirds times as wide as long; surface smooth; anterior marginal 

 and midlateral bristles wanting, others short and blunt (scarcely capitate), 

 the two pairs near the posterior angles subequal in length and longest; 

 coxal bristle similar to and nearly as long as thelatter. Pterothorax slightly 

 wider than prothorax, sides nearly straight and parallel. Legs rather 

 stout, of moderate length; fore tarsi armed with a very small, acute tooth; 

 color lemon-yellow, without shading even on femora. 



Abdomen (greatly distended in the type) of apparently normal form. 

 Tube about half as long as head, less than twice as long as basal width, 

 and about half as wide at apex as at base; terminal bristles "brown, very 

 slightly longer than tube; all other abdominal bristles clear yellow. 



