272 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



43. Apatela griaea (Walker). 



The caterpillar has been reared by Mr. Elliot from the elm. 



Larva after third molt. — Pale apple greeu, the dorsal region elevated into a ridge 

 and marked with a broken brown dorsal line, broadest on segments 2, 3, 8, 9, and 10; 

 the brown patch on 2 with cream-colored edges ; head pale green in center, brownish 

 on the sides, with paler marblings. Segments 3, 4, 5, 6, 7, and 12 have small raised 

 tubercles bearing spines, and on second segment bunches of long hairs. Lateral 

 region wholly pale green with whitish irrorations. Spiracles cream color, edged 

 with black. Thoracic and abdominal legs concolorous. Length 15""™ (.60 inch). 



Fallgroivn larva. — ^Head dull chestnut brown, with some darker markings; body 

 wholly yellowish green with a slight brownish tint. On segments 7 and 8 is abroad 

 brown triangular patch, the mark being continued, slightly reduced in size, to the 

 anal segment. Each of the segments bears brownish tubercles, with short, spinous 

 hairs; those of No. 5 have six tubercles, those of 8 and 9 three each, and the rest 

 only two ; there is a faint subdorsal brownish line broken up iuto patches ; the spira- 

 cles are brown, with redder brown patches above and below them. When at rest seg- 

 ments 3, 4, 5, and 6 are very much elevated into a hump. Ail the tubercles bear 

 short, sharp hairs, and there is also a series along the lower lateral region. Length, 

 when at rest, 25'""' ; when feeding, 32'"™ (1.28 inches). (Hy. Edwards & Elliott.) 



Moth. — Cinereous; abdomen and hind wings white. Fore wings rather short and 

 broad, hardly oblique along the exterior border, with two irregular black discal 

 ringlets, with a widely interrupted black stripe, and with two black bands, each of 

 which forms a distinct X' where it traverses the stripe ; interior band undulating, 

 interrupted ; exterior band zigzag ; expanse of wings 14 to 16 lines. (Walker. ) 



44. Apatela morula Grote & Robinson. 



Mr. R. Thaxter has found the eggs of this moth on the elm. They 

 hatched July 12. The larva molts six times, the sixth time August 2. 

 With the last molt there is a change of color and with this a change 

 of habits, for the caterpillar instead of resting on the upper surface of 

 the leaves, on which it spins a slight web, as in the preceding stages, 

 betakes itself to the crevices of the bark, where it becomes almost invis- 

 ible. 



The cocoon is spun under loose bark or in the crevices, and can often 

 be found on the trunks of old elms, though the moth is somewhat rare. 

 The present brood began to spin August 9, producing a single imago 

 in confinement September 7 ; the moth usually appears in June and 

 July. A larva also occurred on the linden September 15. "In their 

 early stages the larvae of A. morula, furcifera, radcUffii, and clarescens 

 can hardly be distinguished at a glance, and all except the last species 

 produce striking changes of color after the last molt." (Papilio, iii, 13.) 



Eggs. — Very small, much flattened, whitish. 



Young larva. — Dirty greenish white, without marks; a few white hairs, a subdor- 

 sal row black, head tinged with brown. 



After first molt. — July 1.5. Light green; legs and setiferous tubercles white; a 

 subdorsal white band ; a few anterior and posterior hairs very long. Head light green 

 with a few longitudinal dark streaks. Length, 2. .5""". 



After second molt. — July 19. Brighter green. Subdorsal band more distinct, inter- 

 rupted on segments 1 and 10. A transverse median dorsal red band on segments 4, 

 7, 11. Form more tapering abruptly anteriorly and gradually posteriorly from seg- 

 ment83and4. Length, 6""". 



