NO. 1140. NORTH AMERICAN NOCTUIDAE— SMITH AND DYAR. 9 



Secondary hairs are abseut. Most of the si)ecies are black or brown 

 and are low feeders like Arctians. (Group anrieoma.) 



Four larvae, not belonging- to Acronycta, are known, which have 

 nearly the same characters as the Acronyctids. They comprise the 

 genera Bemas, Charadra, Panthea, and Harrisimemna. Raphia, Feralia, 

 and BryopMla have not these characters, while Moiuophana, Dipkthera, 

 Cerma, Polygrammate,^ Cyathissa, and Chytonix, usually associated here, 



1 Since this article was sent to the printer, I have bred Polygrammate heiraicam. 

 The larva is an Acronyctid, but only a portion of the warts are maiiy-haired. It is 

 nnlike all the other species, the only suggestion of affinity being in the habit of 

 pupation, which suggests Harrisimemna. The following are the characters: 



LARVA. 



Slage I. — Whitish, the body a little green tinted at the end of the stage; width 

 of head, 0.2 mm. Warts small, but apparently as in the following stage: I, tAvo- 

 haired ; III, several haired. The length reaches 2 mm. The exact details of stage I 

 and true number of stages not determined. 



Stage II. — Flattened, the warts as in the following stages : III, large and many 

 haired; width of head, 0.3 mm.; length, 4.8 mm. Whitish, with a green tint. 



Stage III. — Head round, green, width, 0.5 mm. Body flattened, wart I, two 

 haired; II, single; III, many haired. Green, a trace of a white subdorsal line. The 

 body tapers behind and the feet are normal. Length, 6.5 mm. 



Stage IV. — Head green, width, 0.9 mm. Wart I, two haired; II, lY, and V, sin- 

 gle; III and VI, many haired. Wart III is very prominent, projecting from the 

 sides. Green, a narrow white subdm-sal line, below wart II and small interseg- 

 mental dorsal dots. Length at end of stage. 8.5 mm. 



Stage V. — Green; head, 1.6 mm. Warts as before, the hair fine and pale. A 

 single dorsal and paired addorsal white dots; subdorsal line on joints, 3 to 13; 

 white, just below wart II. Anal feet divergent, as seen from above. Length, It mm. 



Stage VI. — Head rounded, whitish greeu, mouth white; a tiny black dot in the 

 middle of each lobe before; width, 2.2 mm. Body appears much less hairy than 

 before. Wart I still has several hairs, but the tuft is so small as only to be seen by 

 the lens; II has a single strong hair; III a strong hair and a few small, weak ones; 

 IV a tiny hair; V a strong hair; YI several small hairs. The thoracic warts are 

 similarly reduced. Color clear green, the dorsal intersegmental white dots elon- 

 gated, addorsiil ones ronud ; subdorsal line straight, yellowish white ; wart III shin- 

 ing; spiracles reddish ; clasjiers of abdominal feet elongate. In some, the spiracles, 

 warts Y and VI of abdouien and III, IV-fV, and YI of thorax are surrounded nar- 

 rowly by red-brown. Dorsal hair dusky, subventral hair pale. Later the ground 

 color is more whitish, less clear green, joint 2 and head a little yellowish, the mark- 

 ings less contrasted. At the end of the stage a marked change in color takes place. 

 Head shaded with purplish leaving blotches of white dots confluent in groups over 

 the faces of the lobes; ground color in front and on clypeus still greenish. Body 

 grayish white over the back to wart Y, all the warts orange color. White dorsal 

 and lateral lines, the stigmatal region all white, broken obscurely by greenish in 

 the incisures of the faint annulets. A series of numerous purple-brown spots in an 

 irregular geminate row of four dorsally, the second single; before wart I, behind 

 wart II, above and below the subdorsal line, small, diffuse; before and behind wart 

 III ; over most of the subventral space, forming a sharp lower border to the white 

 stigmatal space, cut on the segmental incisures. Dorsum faintly purplish shaded. 

 Setae all dark. 



After acquiring this coloration the larvae left the leaves where they had hitherto 

 rested anil finally bored in soft wood to pupate, in the manner of Harrixmemna, 

 throwing out the chips united by threads into small irregular balls. 



Fupa. — Cylindrical, slender, light brown, slightly shining. The cases are smooth, 



