﻿136 昆盘 舉雜誌 第 卷 第四號 



hyaline, somewhat grayish or yellowish gray infuscated, stigma fulvous. 

 Kälteres yellow. Abdomen yellow, with 5 narrow black bands, respec- 

 tively at the hind margin of each segment, the first band being somewhat 

 shorter than the scutellum, the 2nd segment in the middle with a narrow 

 longitudinal stripe ； all the bands becoming narrower towards the lateral 

 margins. Venter yellow, the hind margins of the 2nd and 3rd segments 

 narrowly fuscous. Legs fulvous, the hind tarsi at the apices infuscated. 

 Length — ci^ い 3— 1 5 mm. 



Hab. —- Hokkaido, Honshu, Shikoku, Kiushu, Formosa ； China, 

 Ceylon, Java, Sumatra, Celebes, Ternate, New-Guinea 

 Very variable in the coloring of the wings and markings of the abdom- 

 inal segments, and we now hesitate to make any variety of this species. 



2. Asarcina fumipennis Sack. 

 Sack, Ent. Mitt, B. h, Nr. 1， p. 3 (1913). 



We have not seen this insect from Formosa, so we can not say exactly 

 whether this species is new or a mere variety of the former species. 

 Comparing with the description of Dr. Sack we have foünd that the aisle 

 of the mesonotum brownisn pubescented, while in the former species 

 yellowish, and the other characters may be seen both in the Formosan 

 and Japanese species. 

 Length ― 14-15 mm. 

 Hab. - ~~ Formosa (Yamo, Chip-chip ；. 



Didea Macq. 

 Macquart — Suit ä Buff, i, 508 (1834). 

 Head semicircular, broader than the thorax. Antennae somewhat 

 shorter than head, not compressed, much longer than the first and 2nd 

 taken together, the 3rd joint conical, the arista nearly from the middle 

 of the back, as long as the antenna itself, not pubescented. Face not 

 produced, facial tubercle nearly in a level with the antennal-process. 

 Vertex in the female somewhat narrower than the half breadth of the 

 front between the antennae. Compound eyes bare. Proboscis short and 

 stout, oral opening oval, narrower towards the apex. Thorax on the 

 sides without yellowish stripe. Wings moderate, the 3rd longitudinal 



