182 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



costa. From the angle extends a more or less distinct slightly curved series of irreg- 

 ular diffuse dark spots to the inner angle ; this is usually represented by a faint shade. 

 Discal dots alike in each wing, being small and black. Hind wings with the single 

 line in the middle of the wing straight, with the outer series of diffuse spots as on the 

 fore wings. Expanse of wings, 2 to 2.10 inches. 



254. Metanema quercivoraria Guen^e. 



(Larva, PI. Ill, fig. 8.) 



Feeding on the oak, a pale green span worm, marked with red, changing to a 

 brownish-gray chrysalis, from which a beautiful sickle- winged moth comes. 



In Georgia it was observed by Abbot on the oak and poplar in April ; 

 it pupates at the beginning of May, and the moth appears at the end 

 of the same month. We have raised this from the oak, the moth issuing 

 on May 3. 



Larva. — Pale green, with the sutures and sides reddish, a double angle bordered 

 ■with reddish on the second segment behind the head ; another more salient on the 

 sixth, and finally another on the tenth: the fifth segment has on each side a small 

 pointed tubercle. Head and feet concolorous. 



Pupa. — Reddish horn-brown, with the abdominal sutures reddish; caudal spine 

 acute, large and flat. Length 13™"". 



Moth. —Body and wings pale whitish ash. Wings thickly covered with fine speckles. 

 Fore wings with three lines, the usual inner and outer lines, and a third wavy sub- 

 marginal hair-line. The two inner lines distinct, of even width, a little oblique, not 

 waved ; the innermost line situated exactly on the inner third, the outer line on the 

 outer third of the wing. Costal edge stained with reddish on the end of the outer 

 line. Submarginal hair-line wavy, sinuate, reddish, situated half-way between the 

 outer line and the edge of the wing, and disappearing below the second median 

 venule, scalloped between each venule, much more distinct below than above. On the 

 hind wings a single brown line, aud traces of a submarginal wavy line. Beneath paler 

 than above, with the lines reproduced beneath and dull colored ; the third submar- 

 ginal line on both wings partially obsolete, but clearer than above ; fringe reddish. 

 Expanse of wings 1.50 inches. It ranges from Maine southward. 



255. Nematocampa filamentaria (Guen^e). 



The singular caterpillar of this species is found on the oak, maple, 

 as well as the currant and strawberry, in June, becoming a chrysalis 

 in New England by the 20th of the month, the moth appearing early 

 in July and flying about through the summer. Its habits in Missouri 

 have been thus described by Professor Riley : 



June 1, 1870. — LarviB were found at St. Louis, Mo., on thorn and laurel oak. One 

 changed to pupa June 4, hanging between a few threads on a twig. The moth issued 

 June 12. One larva was also received .Juue 26, 1883, from J. H. Clark, of New York, 

 which he found feeding on a rose-bush. It changed to pupa in a slight web of 

 thread June 27, and the moth issued July 5, 1883. 



Some larvie of this insect are infested by Tachinids, the eggs of which were de- 

 posited at the side between the fourth and fifth segments. (Unpublished notes.) 



Larva. — Body cylindrical ; head large, with two unequal pairs of long, slender, 

 fleshy filaments situated on the third and fifth abdominal segments, the posterior 

 pair shorter than the others, curled at the end and finely tuberculated. Head pale 

 rnst-red, full, slightly bilobed, flattened in front ; marbled with a still paler hue. 



