﻿344 1896. Entomol. Nachrichten. No. 22. 



they were different. No lateral spiracles were apparent, 

 but in their stead, a pair of horny appioximate tubes at 

 the eiid of the body, not unlike the respiratory tubes of 

 the larvac of Syrphus. The breast-bone usually distinc- 

 tive of the larvae of Cecidomyia, was not apparent. The 

 nianner of extending and contracting the body, especially 

 the front part, also reniinded one of Syrphus. When, after 

 having been disturbed by me, they were left alone for some 

 tinie, they agaiu buried themselves in the resin, their 

 respiratory tubes alone appearing on the surface of the 

 lump. By counting these, under a magnifying glass, one 

 could easily ascertain the uumber of the hiddeu larvae. 

 After having brought them home, J noticed after a few 

 days that the larvae had gradually contracted towards the 

 inside of the lump, each however remaining connected with 

 the open air by a tubulär passage of apparently hardened 

 resin. Both these tubes and the reddish larvae at their 

 inner end were visible through the semi-transparent resin. 



It was evident that the larvae were undergoing trans- 

 formation. A few thays more, and the reddish color of the 

 pupae became blackened, and on the 11 of June the flies 

 escaped. The process was as follows: the pupa, by gentle 

 expansions and contractions of the abdominal Segments, 

 gradually pushed herseif along its tube towards the surface 

 of the lump, until its thorax projected out of the resin; 

 then the thorax split open and the fly emerged in the 

 usual manner; the pupa-case remained behind, sticking out 

 of the resin. The pupa is quite sraooth, without any horny 

 projections on its front part. I obtained about 20 flies 

 from a Single lump, which, after their escape, looked quite 

 honeycombed by the now empty, vermicular tubes. 



Diplosis resinicola n. sp. Length 0.12—0.14 of an 

 inch, Male antennae not much shorter than the body, of 

 dark color, except the scapus, which is reddish; 2-J-24 

 jointed, flagellum with small, subglobular joints, alternating 

 with double, subcylindrical ones; peaicels between the 

 joints about equal to the diameter of the shorter joints, 

 somewhat longer towards the end of the antennae; joints 

 verticillate, the length of the hairs of the verticils not ex- 

 ceeding the length of the joints. Female antennae less 

 than half as long as the body, 2-f-12 jointed; joints of 

 the flagellum subcylindrical more than twice longer than 

 they are broad, the basal ones being the longest; pedicels 

 Short; the hairs, clothing the antennae are shorter than 



