Diaphyta Bergroth, 1891

Diaphyta Bergroth

Diaphyta Bergroth 1891: 214 ; Kirkaldy 1909: 141; Gross 1976: 486.

Periboea Stål 1867: 521; name preoccupied.

Vandiemenia Distant 1910: 588; Kirkaldy 1909: 141 (syn.).

Type species. Cuspicona pulchra Stål 1867 , by monotypy.

Diagnosis. Described by Gross (1976). Elongate-oval to elongate species. Lateral angles of pronotum shortly truncate. Male genitalia: claspers F-shaped, theca squat with 1 pair of membranous conjunctival appendages. Median penial lobes present, ejaculatory duct short. Female genitalia: seventh laterotergites prominent triangular. Spermathecal bulb with up to 3 long processes.

Key to species of Diaphyta

1 Bright green (yellowish-brown in museum specimens) species with yellow stripes on the prothorax and scutellum, elongate; dorsal margin of the pygophore with a central emargination ( Fig. 11) ....... ........................................................ pulchra (Dallas) – Green (yellowish-brown to buff in museum specimens) or reddish-brown, often mottled; dorsal margin of the pygophore otherwise.........................2

2 Species 10 mm or less long, green (buff in museum specimens), margins of the scutellum and elytra pinkish; ventral margin of the pygophore scalloped ( Fig. 24) ............................................ rosea Bergroth – Species more than 10 mm long, reddish- or mottled brown; ventral margin of the pygophore either with a central emargination or small projections................3

3 Veins of membrane reticulate; ventral margin of the pygophore with a shallow central notch ( Fig. 2) ....... ........................................................ evansorum sp. n. – Veins of membrane not reticulate; ventral margin of the pygophore otherwise..........................................4

4 Fifth antennal segment shorter than the second; ventral margin of the pygophore with a bilobed protuberance centrally (Figs 9,17,29) .......................... 5 – Fifth antennal segment as long as or longer than the second; ventral margin of the pygophore with a deep central notch ( Fig. 17) ...................... richardsi sp. n.

5 Pronotum not mottled with reddish or rosaceous infusion; ventral margin of the pygophore with a very small bilobed protuberance ( Fig. 29); claspers as in Fig. 30.................................. tasmani (Distant) – Pronotum mottled; ventral margin of the pygophore with a larger central bilobed protuberance ( Fig. 9); claspers as in Gross (1976, Fig. 227 C) ...................... .................................................... fulvescens (Dallas)