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A New Genus and Two New Species of Peloridiidae (Homoptera) from New Zealand

Genus Oiophysa, nov

Genus Oiophysa, nov.

Head strongly deflected and indexed, broadly, roundly excised between the eyes, the excision filled by a short laminate membrane, without a large hyaline areolae in each side, and its anterior margin bi-arcuate and very shortly ciliate; eyes stylated, slightly convergent anteriorly, subglobose; ocelli absent; hind portion moderately thick, with median ridge, becoming subcylindrical laterally and directed a little obliquely anteriorly; anterior membrane distinctly notched at middle, at no place more than one-half as long as rest of head. Rostrum very long, stout. Antennae inserted on ridge beneath and between eyes, three-segmented, the terminal segment longest, the ridge distinctly grooved laterally from base of antennae to eyes; antenniferous tubercles conical.

Pronotum strongly narrowed anteriorly, indistinctly punctate and carinate on disc, the sides and behind coarsely punctate, some places almost areolate in appearance, the hind margin roundly excavated, the front margin straight. Paranota long, wide, slightly reflexed, not produced in front or behind, usually composed of short, wide, rectangular cells, sometimes irregularly divided into smaller cells.

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Tegmina (sub-brachypterous form) abruptly widened at base, strongly narrowed posteriorly beyond middle, narrowly produced at apices, only slightly passing apex of abdomen, meeting within a straight line, slightly overlapping a little before apices; moderately convex on disc, the amplicated costal margin wide in front, there biseriate, thence posteriorly uniseriate and slightly reflexed. Cells large, more or less hyaline, the veins thick, raised, prominent. Wings greatly reduced or absent. Legs nearly cylindrical, moderately large; mesoscutum usually partly visible.

Genotype, Oiophysa ablusa n.sp., from New Zealand.

This genus may be separated from Peloridium Breddin (1897), Xenophyes Bergroth (1924), and Hemiodoecus China (1924) by the very short, non-areolate frontal membrane of the head, the anterior margin of which is shortly ciliate. The pronotal margins are not produced anteriorly. The hind margin of frontal membrane is composed of a row of tiny areolae (visible under high power).