Pomona College Journal ok Entomoloov 703 



AI'TKHOIS VIVII-AKlirs KK.MAI.K ( I'l^irc ti'^.S U) 



Length of nnkcd body '2.!* iiiiii., width I ..i iiiiii. Wlini covcrrd with thr long 

 HoorulciuT tlic mcasurciiu-nts ari' lu-arlv Iwii-c as jjrt-at. W<«/.i/ Knlirrly covt-rcd 

 with lonj; white or bluish-while floeeuleliee. I'ret'ailinf; color — Naked ImmIv of living 

 specimens dull green, of mounted speeimens rieli y<'llow. llrad — Light green with 

 inedinn brown spot on the frontal between the nntennif, somewhat triangular in 

 shape with base widest and the front straight, but narrow. K^rt — Kaeh com- 

 posed of a grou)) of three ocelli which resemble a compound eye, the background 

 of which is red (Figure ii'2.S, !•). Antennnc — (Figure '2'i.S I).S). Keaching nearly 

 to the middle of the abdomen, slightly imbricated, with very few hairs, brown 

 throughout witli articulations lighter, (in mounted specimens they appear brown 

 or even amber). I.engtlis of articles: I, 0.11 nmi. ; 11, 0.15 mm.; Ill, 0..S2 mm.; 

 IV, 0.17 mm.; V, O.'2'i mm.; \'I, 0.2 1 unn. (spur 0.04 mm.); total I.2I mm. 

 .Article II is usually longer than I in the apterous form, being nearly a fourth 

 longer; III is the longest, being more than twice as long as II. and nearly three 

 times as long as I, but not twice as long as IV, though very nearly so; IV is 

 shorter than III, V or VI; V is much longer than IV and nearly as long at W. 

 The spur or unguis of the apterous female composes about one-sixth of the article. 

 .Sensoria at the apical end of V and in the process of VI. Rostrum — Reaches to 

 or slightly beyond the third cox», light green or yellow, with brown base and tip. 

 I'rothorai — Green with a brown marginal spot on the front side, little wider 

 than the head. Mesothorax — With a similar brown spot on eacli front margin. 

 Kntire thorax otherwise green. Abdomen — .'smooth, light green. Entire l>ody 

 traversed by four longitudinal rows of large oval glandular spots, which are con- 

 colorous with the bod_v. These occupy nearly all of each abdominal segment on 

 the dorsum. Anal plate sometimes jjrojecting beyond tip of abdomen, brown. 

 Cnrnirlrs — Wanting. Legs — As in the winged form. Sti/le — (Figure 'Zi^. ,S). 

 Hlunted. base innch wider than the length, brown. 



Young — Covered with the long white flocculence from a very early stage, 

 a few may be seen to be naked. The l>ody is a pale light green. 



IIo.ll — This insect feeds on the California Wild Buttercup (lianunrulu.t 

 californicus Benth) and collects in great numlx-rs on the stems, at or slightly 

 below the surface of the ground. In a few cas«-s individuals were observed feed- 

 ing on the stems a few inches above ground and on the undersides of the older 

 leaves which lay on the ground. They are usually grouped in quite large colonies 

 which are easily recognized by the large surplus of the white flocculence which 

 has been rubbed from various individuals. .As soon as disturbed each insect 

 inunediately lets go its hold and seeks shelter among the particles of earth fir 

 leaves. .Small, white, elong.-ited eggs wi-re also obs<'rved on various |>arts of thi- 

 stems. 



/-orn/iV I/Collected by tlie writer on a small hill where the buttercups wen- 

 growing plentifully under the shade of the live oak trees, near NordhofT. Cal.. 

 at an .'iltitude of i,')0 feet. W. M. Davidson has collected this insect in the vicinity 

 of .St.inford I'niversity, Palo .\lto, Cal. 



Date of Collection— \])r\\ 2!), I'd 1. .Serial number .U. 



