726 Pomona College Journal of Entomology 



Resembles the style of the genus Callipterus, but is more knobbed than any of the 

 members of the genus Chaitophorus which have been under my observation. 

 Length 0.08 mm., width or diameter of knob 0.045 mm., width of base 0.06 mm. 



APTEROUS VIVIPAROUS FEMALE (Figure 231 B and C) 



Length of body l.-l mm., width of abdomen just in front of the cornieles 

 0.76 mm. A thin, flat and very small species. The entire body is covered witli 

 long and short spines, each of which is situated on a tubercle (Figure 232, 14). 

 Prevailing color — Green and yellow, variegated, or reddish brown and yellow, 

 markings nearly always constant. Head — Broad across the front and nearly rec- 

 tangular in shape, hairy, dusky green or dusky yellow, often with yellow median 

 markings, nearly twice as wide as long. Eyes — Bright red, with lateral marginal 

 tubercle behind. Antennae — (Figure 232, l6 and 17). Arising from near the 

 sides of the head, reaching nearly to the bases of the cornicles, hairj' ; imbricated ; 

 article I yellow, II dusky yellow. III and IV transparently white or yellow, V 

 transparently yellow or wliite with a dusky tip, VI dusky throughout; lengths of 

 articles: I, 0.06 mm.; II, 0. 55 mm.; Ill, 0.295 mm.; IV, 0.16 mm.; V, 0.115 mm.; 

 VI, 0.45 mm. (spur 0.31 mm.) ; total 1.135 mm. I and II are practically sub- 

 equal, III is as long or longer than IV and V together, but shorted than VI or 

 the spur of VI, IV is longer than V, V slightly sliorter or nearly co-equal with 

 the base of VI. The spur of VI not as long as the sum of IV, V and VI. Sen- 

 soria normal on V and VI. Rostrum — Reaches to third coxae, transparently white 

 or yellow with red tip. Prothorax — Of the older and larger individuals dusky 

 green, in the j'ounger reddish females there is a distinct lateral yellow blotcli on 

 each side of the dorsum. Meso- and Metathorax — With irregular green blotch 

 on tlie median dorsum or a large red blotch covering the median third of the 

 dorsal area and a yellow margin on each side in all cases. Abdomen — Flat, widest 

 near the middle, rounded or pointed posteriorly, covered with stout hairs, mark- 

 ings fairly constant and as follows: ground color either dark green or reddish 

 brown (the larger specimens are usually green, while the smaller ones sometimes 

 appear red or brown). In the larger green forms there are two marginal, trans- 

 verse yellow blotches near the base which extend about one-third the width of the 

 .abdomen from each side, in the middle of the dorsum is a large somewhat tri- 

 angular yellow spot, a yellow spot around tlie base of each cornicle, and a median 

 quadrangular or diamond-sjiaped yellow spot at the posterior end including the 

 pygidiuni. In the smaller reddish individuals the markings are nearly the same, 

 but lack the lateral yellow transverse spots near the base. These are partly 

 included in tlie large yellow spots on the sides of tlie meso- and metathorax. The 

 median dorsal spot is distinctly triangular, and the posterior yellow spot is sliglitly 

 dusky near the extreme end. The anal plate is slightly, but distinctly bifurcate 

 as in the winged forms and covered with long stout spines, color of the ventral 

 body surface which is yellowish or greenish. Cornicles — (Figure 232, 15). In 

 general shape, size and color they resemble those of the winged individuals, but 

 perhaps a trifle shorter and wider at the base. Legs — Normal, hairy, transparently 

 white or yellow, with femora slightl}' amber and tibia- and tarsi dusky amber. 





