﻿CRAWFORD, SOME NEW THYSANOPTERA FROM SOUTHERN CALIFORNIA 101 



extemling from base to tip; anterior longitudinal connected with ring vem by 

 two distinct cross veins, and with the posterior longitudinal by one large cross 

 vein in center of wing; posterior longitudinal connected with ring vein by two 

 slightly less distinct cross veins ; both longitudinal veins with a row of con- 

 spicuous spines ; twenty-five on the anterior and eighteen on the posterior ; 

 anterior markin a row of stout spines, and a short fringe appearing about the 

 middle of margin and increasing in length toward the tip ; posterior margin 

 with long double fringe ; entire surface covered with microscopic hairs. Fore- 

 wings light brown ; hind wings clear white, and margined on both sides with 

 a long fringe. 



Abdomen ovate, about half as broad as long ; uniform brown ; segments 

 four to seven with a row of short spines on the dorsal surface, and all seg- 

 ments with several longer spines on edges and posterior angles ; last three 

 segments (Fig. 45 B) with numerous very long, stout bristles; three last seg- 

 ments form sheath for large upturned ovipositor. 



Measurements: Head, length, .18 mm. (.1.^ - .21 mm.), width .21 mm.; 

 prothorax, length .15 mm., width ,27 mm.; mesnthorax, width .2f^ mm.: abdo- 

 men, width .32 mm.; totil lengtli 1.46 mm. (1.28 - 1.65 mm.) Antennae: 

 I .025 mm., II .067 mm.. Ill .054 mm., IV .040 mm., \' .041 mm., VI .040 mm., 

 VII .027 mm., VIII .018 mm.. IX .023 mm. ; total, .32 mm. 



Males. — Males somewhat smaller than females ; legs slightly lighter than 

 body; abdomen very dark brown to black, darker than thorax, with a broad, 

 white intersegmental membrane between first and second segments, appearing 

 as a white band across the abdomen. Ninth abdominal segment with four 

 very long bristles (Fig. 45 D), and twenty shorter but extremely stout spines 

 (almost teeth) on dorsal surface; anal segment with a partially covered de- 

 pression on dorsal surface, and two claspers on ventral side ; four very long 

 bristles at tip of abdomen. 



Described from five females and three males. 



Food plant: California laurel (Umbclliilaria) and Cal. lilac (Ccauothus). 



Locality: Canon near Claremont, Cal.: altitude, 5000 ft. (Crawford.) 



Aeolothrips longiceps n. sp. 



Head (Fig. 46 F) as long as wide, rounded in front and slightly elevated 

 between basal segments of antennae ; distance from eye to occiput unusually 

 long; cheeks arched; with many inconspicuous spines on the dorsal surface and 

 several on the ventral. Eyes prominent, pilose, with dark Encircling ring; 

 facets large, well separated. Ocelli present, placed well forward on anterior 

 part of head, posterior ocelli almost contiguous with inner margin of eyes. 

 Mouth cone long, reaching three-fourths the length of the prothorax. subacute ; 

 maxillary palpi three segmented, basal segment large, terminal very small ; 

 labial palpi four segmented. Antennae (Fig. 46 B) nine segmented, a little 

 more than twice as long as head ; light brown, lighter than body, except seg- 

 ments four and five, which are unicolorous with body ; third light lemon yellow 

 with darker area at distal end ; all segments, except two basal ones, thicklv 

 and unif()rn:l\- cloth'.'d with stout spines; basal segments with fewer spine 



