摘要：

In this paper, three new genera and seven new species infesting bamboo in. Yunnan Province are described. All the species belong to tribe Tropidocephalini of the subfamily Delphaeinae. The. types of new species are kept in the Nanjing Agricultural University.1. Bambusiphaga jinghonensis Ding et Hu, sp. nov. (fig. 1)In Chinese fauna, this species is allied to B. mirostylis Huang et Ding, but body much smaller, yellow or slightly tinged with orange red, not light brown, the margins of tegminal membrane also not dilute black; second segment of antenna 3 times the length of first (as contrasted with 4). It also resembles B. Singapore (Muir) in the'coloration of body and the structure of genital style, but the tegulae, median area of abdominal dorsum and genital style, yellow, uoe black; apical margin of anal segment produced ventrad in a long stout spinose process, and the pygofer with a minute triangular process present medially on ventral margin which is not visible in posterior view (the corresponding process in B. Singapore is much larger); from which it also differs markedly in the shape of the genital style.Macroip. f.: length 1.8mm, 2.1mm; includ. teg. 3.5mm, 3.6mm; tegmen 2.9 mm, 3.0 mm.Holotype:, allotype:, paratypes: 6, 3, Yunnan (Jinghong), 21-22. VIII. 1983.2. Specinervures interrupta Ding et Hu, sp. nov. (fig. 2)This species is very evidently reflated to 8. nigrocarinata Kuoh et Ding, but differs from it in the inside of the cross vein of the, tegmina having uncontinuous transverse band, pygofer with ventral margin strogly excavate, V-shaped, in profile, each of latero-ventral margins produced in a -broad lobe; and the hook-like apical spines of the genital styles longer than half the length of the. genital styles.Maerop. f.: , length 1.4mm, inclrud. teg. 2.6mm, tegmen 2.3 mm.Holotype: , Yunnan (Jinghong),. 21, VIII. 1983.3. Belocera nigrinotalis Ding et Yang, sp. nov. (fig. 3)This new species differs from B. sinensis Muir in body distinctly smaller, in the dor-sum of body fuscous or dark brown, in the tegminal coloration, which is evenly dark brown except near costa with a light narrow band, and in the genital styles with about equally bifurcate a,t apex, and the outer prong not spatulate at end.Macrop. f.: length 1.9mm, 2.1mm; includ. teg. 3.3mm, 3.7mm; tegmen 2.8mm, 3.2mm.Holotype:, allotype:, Yunnan (Jinghong), 20. VIII. 1983, paratypes: 8, 4 , Yunnan (Jinghong, Monghai), 20-21. VIII. 1983.4. Malaxa delicata Ding et Yang, sp. nov. (fig. 4)Vertex longer than broad at base (about 1.2:1), submedian carinae of vertex meeting much before apex and continued distad as a long median carina; length of frons 2.2 times the width at widest part, obviously widening toward apex, median carina simple; antennae reaching well beypu'd apex of clypeus, first segment 5 times the width, second segment twice the length of first; tegmina much protruding the abdominal apex; legs exceptionally long and slender.Body shiny, mostly browish black or fuscous; apical half of postypeus, antecly-peus, rostrum, first antennal segment except a dark brown longitudinal stripes, base of second antennal segment at dorsum, pronotum, tegulae and ventral surface of abdomen except fourth and fifth sternites, testaceous; legs dark brown to testaceous; apical half of tegmaina mostly dark brown, basal half mostly yellowish brown, two apical cells near hind margin, costal cell at apical two thirds, a triangular, mark at first and second apical cells and each side of fork of Cul, clear hyaline.Macrop. f.: length 2.3 mm, 2.8 mm;; inelud. teg. 3.8 mm, 5.1 mm; tegmen 4.3mm, 4.4mm. Holotype:, Yunnan (Mongban), 22. VIII. 1983; allotype: , Zhejing (Hangzh-ou), 10. VII. 1980; paratypes: 2, 1, Fujian (Huankeng), X. 1983, Zhejing (Hang-zhou), 10. VII. 1980.This species comes near Malaxa obtusipennis Muir (the type specimens are based on three females), but separated by the body size, the shape of frons, the bodily coloration, and the pattern of the tegmina.Malaxella Ding et Hu, gen. nov.Closely allied to Malaxa Meliehar, but is separable from the latter by the fol

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