PINE SPHINGES. 



769 



The different piue hawk-moths are of little economic importance, as 

 they are of great rarity both in the caterpillar and moth states ; liut 

 from a scientific point of view these moths present much interest. 

 Beside the pines, we have found the young larvae on the spruce, late in 

 August, at Brunswick, Me. 



Fig. 26i.—Ellema harrisii; a, male; b, female. (The left wings represent the under side). After 



Lintner. 



I found on Pinus strohus, October 2, at Providence, a caterpillar which 

 I refer to this species, as the green checks on the back are obsolete and 

 the face is red, not green as in U. pineum, according to Lintner, and yet 

 the back is checkered on segments 2 to 4 behind the head. The cater- 

 pillar feeds stretched out like other pine larvse, the yellowish-white 

 lines resembling the under side of a reversed needle of the tree in a 

 bunch, which have yellow and white reflections. '•'■Ellema harrisii," 

 writes Mr. Lintner, " is distinct from Ellema bombycoides of Walker." 

 I have an example of the latter, and there can be no doubt in the case. 

 Even the antennsB are quite different. 



Young larva.— Head very large, vertex high, ending in a large cone. Supra-anal 

 plate large, long, triangular, ending in two blunt conical tubercles. Head pale green, 

 tipped with red on the point of the vertex, from which two faint white bands pass 



down by the eyes. Clypeus and labrum honey- 

 yellow, black on the sides. Two dorsal and two 

 lateral continuous linear white lines. A broken 

 substigmatal broad snow-white line. Thoracic 

 feet pale green ; abdominal feet tipped with red. 

 Molted August 30. Length, 20™"^ For numer- 

 ous interesting details, drawn by Dr. Gissler, see 

 Plate XXXIV. 



Larva before the last molt. — Body thick and 

 stout, head triangular, conical, the vertex pro- 

 duced above, green on the sides ; in front red- 

 dish, edged with a V-shaped dark red and ex- 

 ternally a dull yellow band. Labrum pale. 

 Body green, with two dorsal and two lateral 

 distinct whitish-yellow longitudinal stripes. On 

 posterior half of body a broad median dull brick- 

 red band, broken up in front into three reddish 

 spots. Low down, just below the spiracles, a 

 broad white line nearly interrupted at the 

 sutures, with a reddish short stripe, one to each 

 segment and inclosing a distinct black spiracle. 

 Feet pale reddish. Along under side of abdomen a broad dull reddish median band. 

 5 ENT 49 



riG. 265. — Ellema harrisii — a, larva; b 

 pupa. Lintner del. 



