1920] Dozier: Insects of Florida 355 



I have found large numbers under l)ark inilled from trunk of a dead 

 magnolia. 



These roaches give off a very strong, quite distinctive, and very 

 offensive odor, especially when handled. 



Periplaneta americana Linn. The American Roach. Found occa- 

 sionally in same habitats as the above species. 



MANTID.^. 



Stagmomantis Carolina Johannsen. Praying Mantis or Devil's 

 Horse. This is a forest margin insect and is rather scarce. The eggs 

 are laid in masses and overlaid with a hard covering of silk; the top of 

 the masses having the appearance of being braided. They are deposited 

 on numerous kinds of vegetation. September 15-October 13. 



Thesprotia graminis Sc. Smaller Praying Mantis. This is a 

 forest-margin insect and is not very abundant. 



PIIASMID^. 



Anisomorpho buprestoides Stall. Lubberly Walking-stick. This 

 species seems to be the commonest as well as the largest walking-stick 

 found here. It is also sometimes known as the "Musk Mare. " It has 

 been taken on a variety of vegetation. A pair in copula on Pinus taeda, 

 November 19. 



The difference in size of the sexes is most striking. The female is 

 twice the size of the male in length and much stouter in proportion. 

 The females vary from 3 to 3}i inches and the males from 13^2 to 1% 

 inches in length. 



When disturbed, these insects throw oft" a volatile and acrid liquid 

 with an odor that resembles that of peppermint somewhat. It is 

 extremely penetrating, very much like ammonia, causing a similar 

 smarting of the nostrils. This odor comes from the milkish fluid that is 

 ejected from two pores on the prothorax and it clings to one's fingers 

 and is still strong an hour afterwards. When the secretion is first 

 ejected, the odor is distinct a couple of feet away. 



Diapheromera femorata Say. Forest Walking-stick. This walking 

 stick is distinctly a forest-inhabiting insect and occasionally becomes of 

 economic importance. It is not a common insect in this region. Its life- 

 history and habits have been studied by Riley ('78). August 15. 



ACRTDID.E. 



Schistocerca alutacea Harris. This seems to be the most abundant 

 grasshopper here and is found in nearly all habitats the year round. 

 Numbers of a dipterous parasite, Sarcophaga opifera Coq., were reared 

 from adults. 



Schistocerca americana Drur^^ Bird Grasshopper. Is more abund- 

 ant than the above species during the winter and is found in the same 

 habitats. 



Dichromorpha viridis Sc. A green, short- winged form that inhabits 

 grassy spots in hammock. September 30. 



