Part 22

This interesting species has been taken at Wellington by Messrs. Hawthorne and Norris.

The expansion of the wings is 1-3/8 inches. The fore-wings are very pale brownish-cream-colour; there is a large irregular dark brown patch on the dorsum from about one-eighth to about two-thirds, another smaller patch at the tornus, and another still smaller on the termen a little above the middle; there are two very obscure transverse lines; the orbicular is finely outlined in brown; the reniform contains two very dark brown dots, and is rather strongly outlined in brown towards the base. The hind-wings are dark grey. The cilia of all the wings are grey with a paler line.

The perfect insect appears in November.

MELANCHRA USTISTRIGA, Walk.

(Xylina ustistriga, Walk., Noct. 630. X. lignisecta, ib., 631. Mamestra ustistriga, Meyr., Trans. N. Z. Inst. xix. 26.)

(Plate V., fig. 20 , 20A .)

This beautiful insect has occurred commonly at Wellington in the North Island, and in the South Island, at Blenheim, Christchurch, and Lake Coleridge.

The expansion of the wings is about 1¾ inches. The fore-wings, head, and thorax are pinkish-grey in the male, pale grey in female; the orbicular spot is rather large, nearly round, finely outlined in black; the reniform is very large, margined with black towards the base of the wing, and usually touching the orbicular spot or connected with it by a short black line; the claviform is triangular, also black margined; there is a cloudy oblique line below the reniform, and an irregular line between the reniform and the termen. The hind-wings and abdomen are pale pinkish-grey in male, dull grey in female; the cilia are white with a cloudy line.

{27}This insect varies slightly in size, especially in the female. The larva is dull greyish-brown, with the subdorsal and lateral lines darker. It feeds on honeysuckle during the summer months.

The pupa state is spent in the earth.

The moth is very irregular in its appearance. I have captured specimens in January, February, March, April, July and September. It appears to pass the winter in both the pupa and imago states. It is very partial to light, and in consequence often enters houses.

MELANCHRA PRIONISTIS, Meyr.

(Mamestra prionistis, Meyr., Trans. N. Z. Inst. xix. 27.)

(Plate V., fig. 21 .)

This species is common at Wellington in the North Island. In the South Island it has been taken at Rakaia.

The expansion of the wings of the male is 1-5/8 inches, of the female 1¾ inches. The fore-wings are rather pale yellowish-brown, with numerous irregular longitudinal grey streaks; there are several very obscure jagged transverse lines, and the stigmata are almost invisible; a very broad blackish longitudinal band is situated on the dorsum. The hind-wings are brownish-grey; the cilia are grey tipped with white. The head and thorax are grey tinged with yellowish-brown; there is a conspicuous blackish streak on each side of the thorax.

In this species the dorsal band is often considerably paler, but otherwise there is no variation.

The perfect insect appears from November till April. It comes freely to sugar, and occasionally to light. It is also sometimes met with at rest on trees in the daytime, where its colouring is protective. I have noticed that this moth is much commoner in some years than in others.

MELANCHRA PHRICIAS, Meyr.

(Mamestra temperata, Meyr., Trans. N. Z. Inst. xix. 27 (nee Walk.). Mamestra phricias, Meyr., ib., xx. 46.)

(Plate V., fig. 22.)

This species has occurred in the Manawatu district in the North Island. In the South Island it has been found at Christchurch and Lake Coleridge.

The expansion of the wings is about 1½ inches. The fore-wings are pale silvery-grey; there are several obscure blackish marks near the base, two dark, shaded, transverse bands, one just before the orbicular, and one between the orbicular and the reniform; the orbicular is round, nearly white, with a faint greyish ring in the middle; the reniform is large, oblong, margined first with white and then with black; there is a series of black crescentic marks near the termen, and another smaller series on the termen; the cilia are dark grey. The hind-wings are dull brownish-grey, the cilia are grey tipped with white. The terminal joint of the palpi is elongated.

The perfect insect has been taken in December, February, March and June, and is attracted by light. It is rather a rare species.

MELANCHRA CUCULLINA, Gn.

(Xylocampa cucullina, Gn., Ent. Mo. Mag. v. 40. Agrotis mitis, Butl., Proc. Zool. Soc. Lond., 1877, 383, pl. xlii. 5. Mamestra cucullina, Meyr., Trans. N. Z. Inst. xix. 28.)

(Plate V., fig. 23 .)

This species has occurred at Mount Arthur, and at Rakaia.