Part 24

(11) Thecla calanus Hübner, Plate LXXXIV, Fig. 1, ♂ (The Banded Hair-streak).

On the upper side resembling T. edwardsi, but warmer brown in color; on the under side wings are marked by fine white lines on the outer half, which are not broken as in T. edwardsi, but form continuous bands. Expanse 1.15 inch.

The larva feeds on oaks. The insect ranges from Quebec to Colorado and Texas, and is common in western Pennsylvania.

(12) Thecla liparops Boisduval & Leconte, Plate LXXXIV, Fig. 2, ♀, under side (The Striped Hair-streak).

Dark brown on the upper side. On the under side the lines are arranged much as in T. edwardsi, but farther apart, quite narrow, and scarcely defining the darker bands between them. The spots at the anal angle are obscure and blackish. Expanse 1.15 inch.

The larva feeds on oaks, willows, wild plum, and many other plants. The insect ranges from Quebec through the northern Atlantic States as far west as Montana and Colorado, but is never common.

(13) Thecla damon (Cramer), Plate LXXXV, Fig. 2, ♂, under side; var. discoidalis Skinner, Plate LXXXV, Fig. 1, ♂, upper side (Olive Hair-streak).

In our plate we have given in Fig. 1 a representation of the upper side of the form called discoidalis, which in the central part of the fore wing is broadly marked with reddish fulvous. In Fig. 2 we have a representation of the under side of typical T. damon. With the help of these figures the student may recognize both forms of the species.

The caterpillar feeds on the red cedar (Juniperus virginiana). It is double-brooded in the North and triple-brooded in the South. The species ranges from Ontario to Texas over the whole eastern half of the United States.

(14) Thecla simæthis (Drury), Plate LXXXV, Fig. 3, ♂ under side (The Brown-margined Hair-streak).

Closely resembling in many respects the preceding species, especially on the upper side, but the white band on the hind wings is straight and the outer margins are heavily marked with bright reddish brown. Expanse 0.85-1.00 inch.

This pretty species ranges from Texas well into South America.

(15) Thecla augustus Kirby, Plate LXXXV, Fig. 4, ♀ (The Brown Elfin).

Brown above, paler below. The fore wings on the lower side are marked by a straight incomplete median band; the hind wings by an irregular curved median band. Back of these lines toward the base both wings are darker brown. Expanse 0.90 inch.

The insect is found in New England, thence northward and westward into the British possessions.

(16) Thecla niphon (Hübner), Plate LXXXVI, Fig. 1, ♀, under side (The Banded Elfin).

Our cut gives an excellent idea of the markings of the under side. On the upper side the insect is plain reddish brown. Expanse 1.10 inch.

The caterpillars feed upon pines. The insect ranges from Nova Scotia to Colorado in the Northern States, and is only found in pine woods, but is never very abundant.

(17) Thecla irus (Godart), Plate LXXXVI, Fig. 2, ♂ (The Hoary Elfin).

Grayish brown on the upper side, on the under side of the same color, but paler on the outer margins and darker toward the base; small crescents appear on the outer margins of the hind wings below, or they may be absent. Expanse 1.10 inch.

The larva feeds on young wild plums just after the petals of the flower have dropped away. The species ranges from the Atlantic to the Pacific in the latitude of New England.

(18) Thecla henrici Grote & Robinson, Plate LXXXVI, Fig. 3, ♀ (Henry’s Hair-streak).

Very much like the preceding species, but with the outer half of the wings laved with reddish brown. The hind wings on the under side are blackish brown; on the basal half of the outer margin paler, the division between the dark and light shades being irregular and sharply defined. Expanse 1.00-1.10 inch.

This species, like the preceding, feeds on young plums. It ranges from Maine to West Virginia, and is not very common.

(19) Thecla læta Edwards, Plate LXXXVI, Fig. 4, ♂ (Early Hair-streak).

Wings brown glossed with bright blue on the upper side; on the under side pale fawn, with a band of pale red spots on both wings about the middle, and a few similar spots on the outer and inner margins of the hind wings. Expanse 0.75-0.85 inch.

The species ranges from Quebec to southern New Jersey and westward and southward to West Virginia and Arizona. It is a rare species, and appears in the early spring.

(20) Thecla dumetorum Boisduval, Plate LXXXVII, Fig. 1, ♂, under side (The Green White-spotted Hair-streak).