﻿THE ENTOMOLOGICAL MAGAZINE, Vol. liS. Pr. I. 17 



bridged with a fuscous arch above, front olivaceous, with black hairs, 

 vertex fuscous. In the female face whitish, concolorous pubescented, 

 tubercle yellow, vertex and front olivaceous, vertical triangle fuscous, 

 sending a fuscous stripe towards the antennae. Antennae yellow, in the 

 3rd joint on its back infuscated. Thorax pale fulvous pubescented, in the 

 middle with 4 dark stripes, pleurae grayish, with yellow spots, pectus 

 shining black. Scutellum yellow, black pubescented, on the hind margin 

 mingling some yellow hairs. Calypteres whitish, halteres pal じ yellow. 

 Wings hyaline, with a yellowish shade, veins brown, stigma fulvous. 

 Abdomen orange yellow, the first segment in the middle fuscous, the 

 2nd-4th each with a black double band, the anterior band being narrow- 

 er, interrupted in the middle and reaches or not reaches to the lateral 

 margin, posterior band at the hind margin of the respective sep-ment, in 

 the middle anteriorly scarcely emarginated, and reaches to the lateral 

 margin ； black and yellowish pubescented. Hypopygimn small, in the 

 middle aeneous black. Venter pale yellow, on the sides fuscous spotted. 

 Legs yellow, the hind tarsi at the apices brownish. 

 Length ― ^ 1 1 一 1 3 mm. 



Hab. ― Saghalien, Hokkaido, Honshu, Shikoku, Kiushü, Formosa, 

 Corea ； China, Australia, Europe, Africa (common). 



Dr. P. Sack (Entomologische Mitteilungen, Berlin, IL Nr. i p. 5 (19 13) 

 proposes to make new variety for the Formosan species (var. formosae 

 Sack), but variations of the markiugs are not constant; he says "dass 

 auf der Stirn des ^ zwei grosse, glänzende, schwarze Punkte stehen, die 

 von einem ebenfalls schwarzglänzenden Bogen überbrückt werden." 

 Some of the Formosan male individuals distinctly lack the black arch, 

 while in some Japanese male they have the same arch. All the Japanese 

 males almost without exception have 2 black dots on the front, but the 

 size of them is very variable. Again he says " Die beiden schwarzen 

 Binden auf jedem Hinterleibsring- reichen bis zum Seitenrand der 

 Ringe." 



In our specimens also some of them have the bands reaching to the 

 margin and some not. Until the constant characters are discovered, we 

 hesitate to make any variety. 



