672 



THE SUBDIVISIONS OF THE VEGETAni.E KINGDOM. 



insect, bud an i sprout there with great activity. Entoviophthora radicans commonly 

 attacks caterpillars of the Cabbage-white {Pieris BrassiccB). Having spread through 

 its interior, it sends out tufts of hyphae on the ventral side (fig. 383 *), thus rooting 

 the caterpillar to the substratum. It now develops hyphse all over the body 

 wrapping up the caterpillar like a mummy (fig. 383 -). At the tips of these hyphse 

 conidia are abstricted and shot oft" to some little distance (figs. 383 ^' *• *). A con- 



Fig. 383. — Entomophthoreae : EntomopTithora and Empusa. 



' A caterpillar of the Cabbage-white Butterfly attacked by Entomophthora radicans. ' The same caterpillar fully invested by 

 the Fungus, a Tufts of conidia-bearing hyphse from the back of the caterpillar. < Conidia separating from the tips of the 

 hyphag. 6 Disarticulated conidia. 6 a Fly attacked by Empusa Muscle. ' Hyphre of Empusa Mitsca, from the tips of 

 which conidia are being shot off. * Comdium Inclosed in sticky mucilage. 1,2,6 nat. size; SxSO; *,*,Jx300; *x630. 

 (After Brefeld.) 



jugation of branches sometimes occurs, whilst in other cases fruits are formed 

 parthenogenetically. Empusa Miiscce produces a disease common amongst flies in 

 the autumn. The Fungus having effected an entrance into the hod}' of a fly 

 gradually fills it up with its sprouts. In due time tubes penetrate the surface and 

 develop conidia at their e.Ktremities (fig. 383^). These are shot off as in the letst 

 case, and one may often see flies stuck to the window-pane in autumn surrounded 

 by a halo of these conidia (fig. 383 *). 



About 80 species of Entomophthoreae are known. 



