ORTHOPTERA OF INDIANA. 



193 



Measurements: Length of body, male, 23.5 mm., female, 27.5 

 mm.; of tegmina, male, 14 mm., female, 4.5 mm.; of pronotum, 6 

 mm.; width of pronotum, 8 mm. 



In Indiana the Oriental roach is found in all the larger towns and 

 cities, and is one of the most noisome and disagreeable insects with 

 which certain classes of their inhabitants have to contend. It sel- 

 dom occurs in houses in thinly settled localities, and never, as far 

 as my observation goes, beneath the bark of logs and stumps. 



As its name indicates, it is a native of Asia, but has been carried 

 from one country to another by shipping. It delights in filth and 

 darkness, and hence in the holds of vessels, the cellars and basements 



Fig. 30 — Bl((tla orit'Hiolis; a, female; ft, male; c, side view of female; (/, half grown 

 specimen. All natural sizes. From "Household Insects," published by V . S. Div. of 

 Entomology. 



of tenement lionscs, and in all damp, dirty places it swarms by thou- 

 sands, undoubtedly doing much good as a scavenger, l)ut infinitely 

 more harm on account of its omnivorous and insatiable appetite. 

 Like most other menibei-s of the family, it feeds mainly at night, 

 appearing to detest and avoid the light, as one can readily prove by 

 taking a lighted lamp suddenly into its haunts, when a hurried 

 scrambling will take place toward its daylight retreats, and but a few 

 moments will elapse before the last of the busy marauders will have 

 disappeared. Of this and other species Marlatt has written: 



"The damage they do is not only in the products actually con- 

 sumed, but in tbe soiling and rendering nauseous of everytbing with 

 which they come in contact. They leave, wherever they occur in any 



