NEW CALIFORNIA AND GEORGIA THYSANOPTERA. 15 



a. Head about as long as wide; wings not unusually long, shaded gray-brown, 

 with small transparent area near base; segments 5, 6, 7, and 8 of abdomen 

 without comblike arrangement of spines along posterior margin; color 

 iiniform yellow to gray-brown; segment 3 of antennae not pedicellate. 



Anaphothrips zese Moulton . 



a'. Head noticeably wider than long; wings not unusually long, transparent; 

 segments 5, 6, 7, and 8 of abdomen with conspicuous comblike arrange- 

 ment of spines; color of head and prothorax yellowish or orange-yellow, 

 abdomen brown; segment 3 of antennae pedicellate. 



Anaphothrips tricolor Moulton. 



o''. Head noticeably wider than long; wings very long, light brown, with clear 

 area near base; abdominal segments without comblike arrangement of 

 spines on posterior margin of abdominal segments; color brownish yellow 

 to yellowish white; segment 3 of antennae pedicellate. 



Anaphothrips longipennis Crawford. 

 3. Antennae with 8 segments; one stout spine on each posterior angle of prothorax; 

 head noticeably wider than long; species saltatory. 



a. Color imiform yellow; first longitudinal vein with ten or eleven spines, hind 

 longitudinal vein with three spines; ocelli subapproximate, with reddish- 

 orange crescents; ovipositor extending past tip of abdomen; segment 

 3 of antennae pedicellate (Scirtothrips) Anaphothrips ruthveni ShuW. 



a' . Color translucent white, tinged yellowish brown; first longitudinal vein with 

 nine spines, second longitudinal vein with two; ocelli approximate, 

 crescents light brown; ovipositor not extending past tip of abdomen; 

 segment 3 of antennae not pedicellate.. J^?ia/)Aoi/inps aZ6us new species. 



The genus Scirtothrips was erected by Shull ^ for the species 

 rutJiveni on the characters "Head is shorter than broad and shorter than 

 prothorax, one spine of moderate length is home hy each posterior angle 

 of the prothorax. Species of this genus have the power of springing." 



Since then Anaphothrips zese, A. tricolor, and A. longipennis 

 have been described and now A. albus, all of which have long spines 

 on the posterior angles of the prothorax. In A. tricolor, A. longi- 

 pennis, and A. albus the head is also noticeably wider than long, 

 while A. albus possesses the power of springing; the latter also does 

 not have an oblique division of segment 6 of the antennae. I am 

 positive that the last four species belong to the genus Anaphothrips, 

 and if such is the case the genus Scirtothrips can not hold upon the 

 characters for which it was erected. 



DESCRIPTION OF NEW FORMS AND SPECIES. 



Anaphothrips zese Moulton. 



Female, Forma brachyptera: Length 1.53 mm. Similar to Forma 

 macroptera except that it is longer and the abdomen, which is larger 

 in proportion to the rest of the body, is much wider than the ptero- 

 thorax. 



Described from two specimens taken on weeds, May 21, 1910, at 

 Visaha, Cal. (P. R. Jones). 



This form of Anaphothrips zese resembles Aptinothrips rufus 

 (GmeUn) superficially. 



1 Ent. News, vol 20, no. 5, p. 222, 1909. 



