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昆蟲 學雜誌 第參 もち 第查號 



to the lateral mars?in, compared with lasiophthalmus being larger. Vertex 

 yellow, with 3 distinct fuscous bands. Lep-s similar, only the tibiae, except 

 brown apices, yellow. 



Length ― c/' ？ 7-8 mm. 



Hab. ― Saglialien (Motodomari) ； 6 (3 ゲ, 3 specimens collected 

 by the authors. 



Episyrphus Mats. (n. g.) 

 Near Stenosyrplms Mats. , but differs from the latter as follows : 

 The lower part of the face in the male not beak-like produced ； vertex 

 in the female much narrower than the half breadth of the front between 

 the antennae ； the 3rd antennal joint somewhat longer than the first and 

 2nd taken together, the arists narrower and not pubescented. Wings 

 nearly the same with that of Stenosyrphus. 



Type 一 Syrphiis balteatus Deg. 



We have in japan the following 3 species. 



Table of species. 



1. Abdomen with double bands 2 



― Abdomen with simple band cinctellus Zett. 



2. Abdomen black, with interrupted yellowish bands 



fallaciosus n. ^^p. 



「 Abdomen yellow, with not interrupted black bands 



balteatus D£.g. 



1. Episyrplius balteatus Deg. 

 ' Musca balteata Deg. Ins. VI， 116, 7 (1776). 

 Musca canabina Scop. Ent. earn 929 (1763). 

 Musca alternata Schrank, Ins. austr. 448, 9〇S (i/Si). 

 Syrphus nectarens F. Mant. 11, 331, 74 (17S7); Panz Faun. 

 LXXXIl, 19. 



- Syrphus balteatus Meig. Syst. Beschr. Ill, 312, 57 (1822)； 

 ScHiN.Faun. Aust. Dipt. Vol.1, p. 309 (1862)； Coq Proc. Nat. 

 Mus. U.S. A p. 323 (1898); Mats" Thous. Ins. Jap. Vol. II. 

 、 p. 89， Fl. XXV, fig. 5 (1904) ； Sack, Ent. Mitt. II, p. 5 (1913). 

 Gold green or aeneous. In the male face yellow, ooncolorous pubes- 

 cented, above the antennae on each side with a black spot, sometimes 



