SIX NEW SPECIES OF THE GENUS PSEUDADIMONIA (COLEOPTERA: CHRYSOMELIDAE)

This paper deals with six new species of Galerucine beetles belong to the genus Pseu-dadimonia Duvivier,collected from Xizang and Yunnan.The type specimens are kept in-the Institute of Zoology,Academia Sinica,Beijing and Institute of Entomology,Shanghai.Pseudadinionia hirtipes sp.nov.Antennae,legs and underside black;two terminal segments of antennae,posterior part,of last abdominal segment yellow-brown;upperside deep blue with aenescent metallic and golden hairs.Antennae extending back to the behind humerus,in third segment slightly longer than second,fourth sernewhat longer than third,fifth and fourth about equal in length but more broader than preceding segments,sixth and seventh most broad and nearly equal in length venter of 5-7 segments complanate and slightly concave,eighth and ninth segments rather narrow,middle of venter with a prominent longitudinal costa;in sixth and seventh broader than other,eighth and ninth normal.Pronotum about 1.6 times as broad as long,an- terior of middle of lateral margin most,broad with-larger punctate and a depression on each) side oft middleLength:7-9 mm,breadth:.3.2-4.2mm.Holotype Xizang:Medog Beibong,800-1200m,10.Ⅵ.1983.Allotype id.Paratypes 5,6,id,3,1,Medog Xirong,700-1150m,24.Ⅳ-7.Ⅵ.1983;1,1 Medog,800-1450m,10-15.Ⅴ.1983;2,2,Kabou,1050-1310m,3-11.Ⅴ.1980 2,didong,830-1-1050 ml,30,Ⅵ.-29 Ⅺ.1980;1,Medog,13.Ⅵ.1980.A very distinct species,easily separated from its congeners by the form of antennae and upperside with hairs.Pseudadimonia punctipennis sp.novBlack;last abdominal segment yellow-brown,frontal area red-brownLength:11.2-12-5mm,breadth:5-5.8mmHolotype Xizang:Medog;1600m,6 Ⅺ 1982.Allotype Medog,20.Ⅷ.1979 Paratypes1,id,1,Medog,1750m,21.Ⅴ.1980Easily distinguished from its congeners by much larger in size and very large puncture on the elytra.Pseudadimonia femoralis sp.nov.Piceous or castaneous;frons,frontal tubercle,vertex and prothorax violet;two terminal segments of antennae,coxae and femora (except base and terminal),last abdominal segment yellow-brown.Frontal tubercle smaller,transverse,with some small punctate.Antennae extending back,beyond the middle of elytra,third segment 3 times as long as second,fourth and third about equal in length,fifth slightly shorter than fourth.Pronotum 1.5 times as broad as long,the middle of lateral margin strongly dilated (fig.1);disc with largely and densely punctures an impression on each side of middle.Elytra very rugose and rough,which is produced by the pits irregularly coalescing.Length:8.5-9 mm,breadth:4.2-4.6 mm.Holotype Xizang:Bemi,14 Ⅶ.1965.Paratypes 1,id.;1,Medog,1570m,21.Ⅴ.1980.Allied to P.variolosa (Hope),but differs in the longer and slender antennae,the form of pronotum (fig.2).Pseudadimonia parafemoralis sp.nov.Black;last abdominal segment and behind of middle of femora (terminal black) yellow-brown.Length:9.5-10 mm,breadth:5.5-5.8 mm.Holotype,Yunnan:Jinping,1500-1700m,11.Ⅴ.1956.Allotype,id.Paratype 1,Mengla,620-650 m,21.V.1959.Allied to P.femoralis,but differs in the form of pronotum (fig.4).Pseudadimonia dilatata sp.nov.Black;terminal 1-2 segments of antennae and posterior part of last abdominal segment yellow-brown.Antennae slender,nearly as long as body,third about 1.5 times as long as second,fourth slightly longer than third,fifth rather shorter than fourth.Pronotum broader than long, middle of lateral margin strongly dilated (fig.3);surface with a broader longitudinal degression in the middle and there are a larger impression on each side of middle,the pu-mctation gross.Elytra very rough and rugose,largly and densely punctate.Legs slenderLength:9.1-10 mm,breadth:4.3-5.1 mm.Holotype Xizang:Medog,2400m,18.Ⅷ.1982.Allotype,id.Paratypes 1,1,id.Related to P.variolosa (Hope),but differs in the antennae slender and longer,the mid-dle of lateral margin of pronotum strongly dilated and elytra more rugose.Pseudadimonia pararugosa sp.nov.Black;apices of terminal segment of antennae and posterior part of last abdominal segment yellow-brownLength:8.1-9.7 mm,breadth:4.2-5.4mm.Holotype,Xizang:Medog,9.Ⅷ.1979.Paratype 1,id.10