June, ipis-] Hood and Williams: New Thysanoptera. 131 



Described from 8 females and 4 males collected from the stump 

 of an undetermined tree (bay?) in a damp situation near Orlando, 

 Florida, on November 15, 1914, by C. B. Williams. 



Easily recognized by the yellow head and apical abdominal seg- 

 ments. 



SYMPHYOTHRIPS new genus. 

 iavn(j)va, a. 03 growing together; 0pi\f/, a wood worm.) 



Head about as wide as long, vertex evenly declivous, cheeks nearly 

 smooth, sub-parallel. Eyes small or moderate, their interval greater than 

 their width. Antennae seven-segmented, though sometimes with a more or 

 less distinct suture across the last segment, indicating the line of fusion. 

 Mouth cone very long, pointed, attaining middle of mesosternum, tip of labrum 

 exceeding that of labium ; maxillary palpi long, slender, about one-third the 

 length of head, basal segment very short ; labial palpi about half as long as 

 maxillary palpi. Pronotum slightly shorter than head, of normal structure. 

 Fore femora slightly enlarged, fore tarsi with a stout tooth in both sexes. 

 Wings, when present, moderately broad, not narrowed at middle. Abdomen 

 moderately heavy ; tube stout, very thickly chitinized, nearly as long as head 

 and half as broad, much narrowed to apex ; lateral abdominal bristles, espe- 

 cially those on apical segments, unusually stout. 



Type. — Symphyothrips punctafits Hood and Williams. 



Though evidently a close relative of Trichothrips, this genus 

 would appear distinct by the union of the seventh and eighth antennal 

 segments to form a compact mass, and by the stout, heavily chitinized 

 tube. 



Symphyothrips punctatus new species. (Plate IX., figs. 3-6.) 



Female, forma macroptera. — Length about 1.7 mm. Color uniform yel- 

 lowish brown, except for tube, which is orange brown, and a pair of nearly 

 black blotches at base of abdominal tergites 3-8 ; wings pale yellowish brown ; 

 hypodermal pigment orange by reflected light, ocellar pigment bright red. 



Head slightly longer than wide, blunt anteriorly, sides slightly converg- 

 ing behind, occipital region faintly reticulate ; postocular bristles as long as 

 the eye, capitate, stout. Eyes small, one-fifth the length of the head. Ocelli 

 distinct, the anterior one directed slightly forward, the three forming an 

 equilateral triangle with the base on a line with the back of the eyes. An- 

 tennae about 1.8 times the length of the head; segment i tapering to apex; 2 

 longer and narrower ; 3 subconical, rounded at the apex ; 4—6 suboval, pedicel- 

 late ; 7 with very indistinct trace of division about two-fifths from apex ; 6 

 and 7 a little darker than the rest, which are concolorous with the body; 

 sense cones long, slender; formula: 3, i-i ; 4, i— i+i; 5, i-i + i; 6,1-0+1 ; 7 with 

 one at apical two-fifths of dorsal surface. 



