296 



COXTEOL OF WATTLE I5AGW0IIM. 



exterior of the host's body, generally on one of the thoracic 

 segments, and are apparently placed in position whilst the 

 host is feeding. Some bagworms may bear three, four, or five 

 of these eggs, although only one parasite can come to maturity 

 in a single host. The eggs are dull white in colour, oval in 

 shape, and measure 0'75 mm. by 0'5 mm. (Tig. 12). The 

 larva of this species can be easily recognised by its peculiar 

 buccal armature (Fig. 14), by the irregular rows oi spines 

 running transversely across the anterior border of each 

 segment (Figs. 10 and 15), and by the arrangement of the 



U 



Fig. 10. — Carcdia evolans, Wied. Mature larva. 

 Fig. 11. — CarccJia cvoknis, Wiecl. Puparinm. 



slit-like orifices in the stigmata (Fig. 13). The parasitic larva 

 leaves the body of its host when fully grown and pupates 

 inside the bag as a general rule, although there are indications 

 that a few of them may drop to the ground and pupate in the 

 soil. The puparium is blackish brown in colour, slightly 

 curved, and measures about eight millimetres in length 

 (Fig. 11). 



Like Fhilopsyche, the emergence of the adults extends 

 over a long period, from March to October, and the genera- 

 tions, probably two a year, overlap. The adult is a burly, 

 hairy fly, measuring about ten to twelve millimetres in length. 

 The eyes are bright red and the frons silvery in colour. The 

 body is dark grey, with four indistinct black lines on the 

 thorax. The scutellum is deep brown. A conspicuous silvery 

 band runs transversely across the anterior half of each of the 

 abdominal segments from the second to the fourth ; the band 

 on the third segment is more distinct than the others. On 

 each side of the second segment there is an indistinct reddish 

 patch (Fig. 9). 



