246 
Tachinma macrocera R. D. 
(7'. nitidiventris Zett.). 
This fly has been bred from caterpillars of Dasychira groen- 
landica Woche in East Greenland. In Denmark I have meet with 
the species in June at Tisvilde, where it oviposited on fullgrown 
caterpillars of Malacosoma castrensis L.; all the hosts pupated 
before they were killed by the parasites, which pupated in the 
cocoon outside the pupal shell of the hosts. 
Tachina vidua Meig. 
Bred from a caterpillar of Macrothylacia rubi L. 
Digonochæta setipennis Fall. 
Bred from an undetermined caterpillar and in numbers from 
fullgrown earwigs (Forficula auricularia L.). In September the 
maggots are in the 3rd stage and are found with the posterior 
end attached to a' chitinous funnel originating from a hole in the 
skin between the sclerites, through which the young larva has 
penetrated into the earwig. The hole is in most cases found 
on the thorax of the earwig. In the funnel the cast larval skin 
of the first stage of the Digonochæta larva is lying fully extended. 
Before the pupation the parasite leaves the host. The maggots 
are fullgrown in October and the flies emerge either in the same 
autumn or in April of the next year. 
Explanation of the figures. 
Phryxe vulgaris Fl. 
Fig. 1. 1. Stage. Pharyngeal skeleton. 
meg. — — — 
— 8. 3. —… … Anterior spiracle. 
— 4. - —  KPharyngeal skeleton. 
— 5. - — Anterior spiracle. 
mr — … Posterior spiracles. 
