HYDRIOMENA PRIONOTA, Meyr.
(Arsinoe prionata, Meyr., Trans. N. Z. Inst. xvi. 73. Anachloris prionata, Meyr., ib. xviii. 184.)
(Plate [VI]., fig. 47.)
This species has been taken in the South Island at Mount Arthur, Castle Hill and Dunedin.
The expansion of the wings is rather under 1½ inches. The fore-wings are dull yellowish-brown, with many obscure, wavy, transverse, brown lines, which tend to form two ill-defined bands, one rather narrow near the base and the other much broader near the middle of the wing. The hind-wings are very pale yellowish-brown; there are a few obscure dark lines near the dorsum. The veins are distinctly dotted in black, and the outline of all the wings is deeply scalloped.
The perfect insect appears in January, but is not common.
HYDRIOMENA DELTOIDATA, Walk.
(Coremia deltoidata, Walk. 1321. Cidaria inclarata, Walk. 1411. Cidaria perductata, Walk. 1412. Cidaria congressata, Walk. 1412. Cidaria conversata, Walk. 1413. Cidaria descriptata, Walk. 1414. Cidaria bisignata, Walk. 1415. Cidaria aggregata, Walk. 1415. Cidaria congregata, Walk. 1415. Cidaria plagifurcata, Walk. 1416. Coremia pastinaria, Gn., E. M. M. v. 64. Cidaria inopiata, Feld. cxxxii. 3. Cidaria monoliata, Feld. cxxxii. 8. Cidaria perversata, Feld. cxxxii. 14, 24. Scotosia deltoidata, Meyr., Trans. N. Z. Inst. xvi. 70. Cephalissa deltoidata, Meyr., Trans. N. Z. Inst. xviii. 184.)
(Plate [VII]., figs. 1 to 9 varieties.)
This pretty insect is extremely abundant throughout the country.