566 



INSECTA. 



habitat in the abdomen of wasps and humble bees (Bombyliidce) from 

 which they only protrude the anterior part of their body. In copu- 

 lation the males are said to open by means of their copulatory 

 organ the dorsal tube of the female, which is at first closed. The 

 ovaries have no oviduct, and continue as it seems at an earlier stage 

 of development, since they probably like those of the viviparous 

 Cecidomyia larva? produce eggs. The eggs fall freely into the body 

 cavity, are fertilized and develop (perhaps sometimes parthenogene- 

 tically) into larvse, which pass out through the above-mentioned 

 dorsal canal and become attached to larvre of bees and wasps (fig. 470). 

 In this larval state they are able to move about and possess, like the 

 young larva? of Cantheridce, three well-developed pairs of legs, and 

 two caudal setae on the abdo:nen. They bore their way into the 



body of their new host. About 

 eight days later they undergo 

 an ecdysis, and Change to 

 an apodal cylindrical maggot, 

 which becomes a pupa within 

 the Hymenopteran pupa, and 

 as such bores its way out with 

 its head from the abdomen of 

 the latter. The males leave 

 the pupal skin and seek the 

 females. They seem to live 

 only a short time. 



Fam. Stylopidse. Xcnos Rossii 

 Ivirb. (_Y. vcsparum Ross.) parasitic 

 in Polistes gallica. Stylojts melittcn 

 Kirb. 



FIG. 47Q.Stylops Cli ildreni (after Kirby). a, Larva. 

 I, Female, c, Male. 



Order 5. Rhynchota* = Hemiptera. 



Insects with jointed rostrum, piercing (exceptionally biting) mouth 

 parts. With usually free prothorax and incomplete metamorphosis. 



The mouth parts are almost without exception arranged for 

 taking up fluid nourishment, and are usually represented by a 

 rostrum, in which the mandibles and maxillre, as four rigid styles, 

 are moved backwards and forwards. The rostrum, which is formed 



* Burmcister, " Handbuch der Entomologie." II. Bd., Berlin 1835. 



J. Halm, "Die wanzenartigen Insectcn." isiirnberg, 1831-184'J. Continued 

 by H. Schiiffcr. 



F. X. Fiebcr,"Dic europaischcn Hemipteren nach dcr analytischen Methode." 

 Wien, 1800. 



