[Read before the Otago Branch, November 11, 1941; received by the Editor, November 14, 1941; issued separately, March, 1942.]
Hydriomena paucita n.sp.
Wing expanse in males 24 to 25 mm.; females 25 to 26 mm. General colour grey with dark brown markings. Termen of fore-wing rounded. Basal line indistinct. First line more distinct on costa than on lower area. Second line double, strongly waved on terminal edge where it is more distinct. Subterminal line ochreous grey, running parallel to termen. The veins are ochreous grey outlined with black dots. The orbicular appears as a U-shaped mark—in the males the centre lines of this U are distinctly black, but in the females this distinct marking is replaced by an elongate dot. Reniform not very distinctly outlined in darker grey. Vein terminations on the forewings form indentations edged with ochreous grey cilia. Hindwings well marked on dorsum with a series of darker lines which fade out near the centre of the wing. Their termen is strongly indented—cilia greyish-white. The female is slightly more uniform in colouring than the male
Ten specimens from Portobello, Dunedin, taken at light from November to January, with one taken in June, which points to two broods in the year.
This obscure species with its attraction to lighted windows and the character of its flight along with its wing-shape tended to make me first inclined to place it as a Chloroclystis, but Mr. G. V. Hudson kindly pointed out the double areole in the forewing which places it in the Hydriomena.
Selidosema cineracia n.sp.
Wing expanse, 30 mm. Head and thorax ash-grey. Antennae grey-brown. Abdomen ochreous. Forewings pale brownish-ochreous. Strongly arched at base, then almost straight to apex. Termen
slightly bent inwards from centre to tornus. Basal line faintly indicated by a short dark line below centre of wing. First line only just indicated by a dot at centre of wing, with a dark streak below centre outwardly angled towards dorsum. Claviform shows as a slight dot with a surrounding darker suffusion. Reniform faintly shown clouded with dark brown with a small dark dot in centre. Submarginal area very slightly paler—the terminal line indistinct, with a terminal series of small dark dots. Cilia ochreous—very short. Veins faintly indicated in grey. Lower wings pale ochreous without markings and with a definite incurving at about one-third along termen. Cilia light ochreous and very short. Under side evenly ochreous white, the hindwings a shade lighter. No appearance of lunule.
Twelve specimens, all males, and all remarkably even in size, from Moke Lake, Wakatipu District, taken in February on “sugar” and at dusk with the net. No females were taken despite a special search, and it is likely that they will prove to be apterous. The small amount of marking on the forewings and the absence of markings in the hindwings, along with the well-developed incurved area in the latter, make this species easily separated from any other Selidosema.