A NEW GENUS AND SOME NEW SPECIES OF DELPHACIDAE ATTACKING BAMBOO IN CHINA

The present paper records a new genus and nine new species of the tribe Tropido-cephalini of the subfamily Delphacinae, which are know to attack bamboo. All typespecimens are kept in the Nanjing Agricultural College. Bambusiphaga Huang Ding, gen. nov. Body slender, head (incl. eyes) narrower than pronotum, vertex slightly shortersubmedially than its width at base (0.7--0.92:1), width of base subequal to or slight-ly broader than apex, lateral margins more or less diverging anteriorly, apex slightlyrounded, submedian carinae and Y-shaped carina not distinctly prominent, submediancarinae starting from near the apex of the lateral margin and uniting at apex of ver-tex, frons almost oblong, with the middle line about 2.1--2.67 times longer than itsbroadest part, median carina simple or forked at extreme base, median carinaof postclypeal obscure and lateral carinae absent; antennae terete, not reaching tofrontoclypeal suture, basal segment as long as broad, second segment longer than first(3.35----4.10:1); rostrum just attaining mesotrochanters; pronotum about as long asvertex, lateral carinae straight and reaching the hind margin or nearly so; length ofmesonotum 1.4-2 times the length of vertex and pronotum combined, median carinaof mesonotum extending to tip of scutellum; tegmina much longer than abdomen; hindtibia with two small spines, one beyond the middle, the other near base, and with fiveapical spines, metatarsus of hindleg with six apical spines and second segment withfour; spur cultrate, slightly concave on inner surface, with a minute apical tooth, buttoothless on hind edge. Rather related to Pundaluoya, but differs in the form of the frons and the antennae. Type species: Bambusiphaga nigripunctata Huang Ding, sp. nov. Key to the species of Bambusiphaga, gen. n.1 (2) Body and tegmina with black spots and stripes. a dark fuscous spot at junction of commonclaval vein and commissural margin. Testaceous to fuscous, length (incl. tegm.): 3.55 mm., 4.00mm. Holotype , allotype , 1975, Sichuan B. nigropunctata Huang Ding, sp. nov. (figu. 1--7).2(1) Not as above:3(6) Tegmina near hind margin on transverse vein without small fuscous spot, antennae rather slender4(5) Lateral pronotal carinae not touching the hind margin, frons at middle of eyes distinctly broader. Body pale brown, eyes fuscous, length (incl. tegm.) 4.31 mm. Holotype , 1975, Yunnan B. mirostylis Huang Ding, sp. nov. (fig. 18)5(4) Lateral pronotal carinae touching the hind margin, frons subparallel. Body milk-yellow, eyes reddish, length (incl. tegm.): 3.24mm., 3.52 mm. Holotype ; allotype , 1975, Kiangsu B. lacticolorata Huang Ding, sp. now (figs. 19--23)6(3) Tegmina near hind margin on transverse vien with a small fuscous spot antennae rather stoute 7(8) Frons rather long, in middle line longer than broad, about 2.5:1 at its broadest part. apex of genital styles of male forked. Body pale yellow or orange-reddish, length (incl. tegm.): 3.66mm., 3.93mm. Holotype , allotype , 1975, Yunnan B. furca Huang Ding, sp nov. (figs, 8--11)8(7) Frons rather short, the length of middle line less than 2.2 times as broad as its broadest part, apex of genital styles of male not forked:9(10) Frons gradually broadened toward the base, lateral margins of vertex divergent distally, basal half of genital styles not distinctly broadened, genital styles pale brown in basal three fourths. and fuscous in apical one fourth. Body orange-reddish, length (incl. tegm.) 4.17 mm. Holotype , 1975, Yunnan B. similis Huang Tian, sp. nov. (figs. 16-17)10(9) Vertex and frons not as above. basal half of genital styles distinctly broadened, genital styles fuscous at base and apex, pale testaceous in middle. Body orange-yellow or orange- reddish, length (incl. tegm.) 4.04mm. 4.28mm. Holotype , allotype , 1975, Yunnan