1920] 



Dozier: Insects of Florida 



339 



PART II. 

 Relation of Hammock Insects To Their Environment. 



I. GROUND stratum. 



Earthworms are abundant and beneath old logs and loose 

 bark large numbers of millepedes and centipedes are to be 

 found. A prettily-marked lampyrid larva was observed devour- 

 ing one of these millipedes. Snails and sow-bugs are also 

 plentiful. 



Fig. 8. a, Strategus antaeus, showing the long and formidable-looking horns 

 which vary greatly in different individuals. Nat. size. 



b, a wood-borer, Mallodon mellanopus. Nat. size. 



c, Nyctobates barbata Knoch., which is found beneath the loose bark of 

 decaying tree trunks. Twice nat. size. 



The bark and wood of fallen trees offer a home to numerous 

 insects (Fig. 8). When the bark has become loosened, we find 

 practically all of the small invertebrates that are recorded from 

 the ground. Vespa Carolina, Diaperis macidata var. floridana, 

 and often large colonies of the green stink-bug, Nezara viridula, 

 hibernate beneath the loose bark. In the same habitat are 

 also found the earwig, Vostox brunneipennis, and the large 

 tvood roach, Eurycotis floridana. 



Beneath fallen logs, the tenebrionids, Polypleurus nitidiis, 

 P. geminatus and Ilelops cisteloides, occasionally Strategus 

 antaeus, and various carabids are to be found in abundance. 



