摘 要：
Through the study of genitalia and proventriculus, as well as the external morpho-logy of the genus Scolytus Geoffr. which is the only genus of the family Scolytidae(s. str.) now found in China, we suggest the revised classification with keys to subgeneraand species-groups as follows: Key to subgenera of Scolytus Geoffr.1(4) Penis without seminal valve ("Rinne", Nusslin), terminal opening of the penis body not ventrad, pro- ventricular plate narrower, teeth of the plate smaller.2(3) Dividing line between first and second abdominal segment prominent and somewhat elevated at the side. . . . . . . . . . . . . . . . . . .Scolytus s.str.3(2) Dividing line between 1st & 2nd abdominal segment indistinct at the side. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Confusoscolytus Tsai et Hwang, n. subgen.4(1) Penis with seminal valve, terminal opening ventrad, proventricular plate broader, with larger and pointer teeth. The dividing line between 1st & 2nd abdominal segment indistinct. . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . Rugulosocolytus Butov. Key to species-groups of Scolytus Geoffr. I. Subgen. Scolytus s. str.1(4) Penis without end plate, terminal opening dorsad, with a plug process at the base or middle of the 2nd abdominal segment, rarely wanting (e. g.: S. butovitschi Stark ? & S. pygmaeus F.)2(3) Strial punctures similar to the interstrial punctures of the elytra, penis body slender symmetrically, without special process near the end, apical orifice sometimes heart-shaped, Hind margin of 8th ster- nite (?) with hairs. . . . . . . . . .Archaeoscolytus(Butov.) Tsai n. comb. (=Archaeoscolytus Butov.+ Spinuloscolytus Butov.)3(2) Strial punctures differ from the interstrial punctures. Penis body twisted asymmetrically, apex en- larged, capitate. Hind margin of the 8th sternite (?) without hairs. . . .Pygmaeoscolytus Butov.4(1) Penis with end plate, terminal opening not dorsad, 2nd abdominal segment without process.5(6) Lateral punctures of pronotum rougher than the dorsal, sometimes to come into contact with each other, strial punctures of elytra similar to interstrial punctures. Penis body closed dorsally, tubiform. Spicule ("Stengel", Lindemann) without lateral barb ("Seitenzahn", Butov.). . . .Tubuloscolytus Butov.6(5) Lateral punctures of pronotum fine, separately, strial punctures of elytra are larger than those of interspaces. Penis body opened dorsally, furrow shaped, lateral edges dilated at the middle, sometimes triangular in form. Spicule with a lateral barb. . . . . . . . . .Scolytus s. str. Ⅱ. Subgen. Confusoscolytus Tsai et Hwang1(1) Penis without end plate, nor seminal valve, Penis body opened dorsally, furrow shaped, apex conical.Frontal surface longitudinally aciculated. Size small (1.5-2 mm.) . ..Confusoscolytus s.str. Ⅲ. Subgen. Ruguloscolytus Butov.1(4) Seminal valve connected with seminal rod ("Rinnenstabchen", Butov.) sensory clasper ("Geschlechts- taster", Butov.) obsolete, penis body with lateral hairs or setaceus papillules.2(3) Frontal surface granulated, Host: conifers. . . . . . . . .Pinetoscolytus Butov.3(2) Frontal surface longitudinally aciculated, Host: conifers or broadleaf trees. . . . . . . . . . . . . . . . . . . . . . . .Pinetoruguloscolytus Tsai et Hwang, n. sp. gr.4(1) Seminal valve separated with the rod, sensory clasper developed, penis body without lateral hairs nor papillules, Frontal surface longitudinally aciculated, Host: broad-leaf trees. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Raguloscolytus s. str. Scolytus (Rugaloscolytus) sinopiceus Tsai, n. sp. (P1 Ⅰ:12; Ⅱ:11; Ⅲ:12; Ⅳ:3, 7-8;Ⅴ:4-6) Length: 3.7-4.9mm., grayish black, shining; head, pronotum, scutellum, ventralside of thorax and abdomen black. Elytra dark ferruginous, with black margins anddarker apices; antennae and tarsi grayish brown; hind margin of abdominal segmentslight pale. Body with long hairs, hairs of head and thorax grayish black, those of elytraand abdomen pale yellow; tibial hairs grayish. Male frons concave, extending near the hind margin of the head, s
