Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 65. (Budapest 1973)

Zwick, P.: Plecoptera from Korea

Length 7-9 mm; pale yellowish-brown in colour, head without marking. Prothorax with poorly delimited longitudinal band slightly darker, a fine dark line along anterior and posterior margins of pronotum. Pterothoracic segments pale, except pleural fold and dorsal U-mark on notum. A narrow brown median band over abdominal tergites 1-8, an indistinct lateral stripe along segments 1-3. Subgenital plate roundly projecting, short, not set off against rest of segment by folds or by colouration. Wings with pale veins, Rs forked once in both wings, A% of fore-wing also forked. Legs yellow. Antennae yeUow basally, growing darker distally, tips black. Cerci pale, broken off in all specimens, their fragments still longer than half of abdomen. Tarsal joints 1 and 2 only indistinctly separated, almost fused. Discussion — The present Ç Ç exhibit no characters which woul ploace them definitely in one of the known genera of Chloroperlidae. Size and colouration resemble Triznaka, which has recently been shown to exist also in Asia (ZHILTZOVA & ZWICK 1972, ZWICK 1972).' PERLIDAE Schistoperla decorata sp. n. (Figs. 29-33) Holotype çf : Korea, Prov. Kengi, Bagyon Mts. Kaesong, 6. VI. 1970 (at light in town, No. 93); paratype 9 : Prov. Kanwon, Diamond Range, Hotel Go-song, 30. V. 1970 (No. 70). Length 21 (Q*)-24 (ÇJ) mm; body (çf) 17 mm, fore-wing 18 mm long, expanse 38 -42 mm. Cinnamon-brown, pronotum almost black, abdomen lighter. Wings brown, hasal two-thirds of Sc and G and membrane between them yellow. Head with a prominent orange-yellow marking of characteristic shape. Jf-line faintly indicated. çf (Figs. 31-33): Sternite 9 with a large subgenital plate, set off against 9th sternite by a transverse keel, bearing anteriorly angular and posteriorly rounded ventral lobe; subgenital plate not sclerotized below lobe. Tergite 10 with a big notch behind, embracing epiproct. It is black and shining and consisting of two sclerites fused in middle. Tergite 10 with a hard process above insertion of paraproct and a sharp httle spine above this process. Paraprocts hook-shaped, bent up, with a subterminal spine. 9 (Fig. 30) : Sternite 8 with a long tongue-shaped subgenital plate, shallowly notched distally and somewhat asymmetrical in the only specimen known. Plate covering sternites 9 and 10 and simple blunt paraprocts. Posterior margin of tergite 10 shghtly angular. No mature eggs available. Differential diagnosis — Veiy close in structure to Schistoperla collaris BANKS from Formosa, the only other species of Schistoperla which has recently been redescribed in great detail by KAWAI (1968). The anterior and posterior supracoxal giUs are present ; they have apparently not been visible in the dry material studied by KAWAI. In S. collaris, the head has no hght central spot (Fig. 29) and the epiproct is entire posteriorly. Discussion — The generic rank of Schistoperla is doubtful ; it might well be a junior synonym of Gibosia, which apparently differs from Schistoperla only by the epiproct consisting of 2 separate sclerites and the spines on tergite 10 situated more towards the segment's posterior margin. Kiotina is also close : ah three ge-