OETHOPTERA OF INDIANA. 187 



V. Blattella Caudell (1903). 



The members of this genus have the body elongate; the head 

 almost completely hidden by the pronotum, which is small and sub- 

 orbicular; the eyes large and renif orm, the ocelli more or less distinct. 

 Antennae setaceous, sparsely clothed with long hairs, unicolorous and 

 much longer than the body. Tegmina and wings reaching to or be- 

 yond the tip of abdomen, membranaceous or slightly coriaceous. 

 Inner wings with the ulnar vein undivided and without incomplete 

 branches to the vena dividens. Supra-anal plate of male elongated, 

 either triangular or broadly rounded, sometimes almost orbicular; 

 sub-anal plate of the same sex with the styles rudimentary or want- 

 ing. Last abdominal sternite of the female, large, triangular, obtuse 

 but not notched. 



This genus is represented in Indiana by but one introduced species 

 which is cosmopolitan in its range. 



10. Blattella germanica (Linnaeus). The German Cockroach. The 

 Croton Bug. The Water Bug. 

 Blatta germanica L., 8 1 , II, 1767, 688; Sauss., 132, VI, 1870, 28 



Comst., 4 1, 1888, 93, Fig. 87; Fern., 53, 1888, 50, Fig. 20 



Kell., 78, 1892, 108, Fig. 59; Lugg., 84, 1898, 90, Fig. 53 



Scudd., 188, 1900, 8. 

 Ectobia germanica Scudd., 14 1, VII, 1862, 418; Pack., 1 04, 1869, 576, 



Fig. 569; Glov., 62, 1872, Plate 1, Fig. 4; Id., 63, 1874, 132, 



Fig. 3; Riley, 122, H, 1884, 171, Fig. 247; Id., 125, I, 1888, 



68, 191. 

 Phyllodromia germanica Bruun., 3 7, 1865, 90; Pack., 104, 1883, 676, 



Fig. 569; Riley, 126, II, 1890, 266, Fig. 57; Bl., 8, 1893, 162; 



Id., 16, 1899, 204, Fig. 44; Beut., 3, VI, 1894, 258. 

 Ectobia (Phyllodromia) germanica Marl., 8 5, 1896, 92, Fig. 42; Id., 86, 



1902, 10, Fig. 5. 

 Blattella germanica Gaud., 40b, V, 1903, 234. 

 Ischnoptera bivittata Thorn., 2 1 0, 1, 1876, 250, Plate XXXVI, Figs. 1, 2. 



This is one of the smallest and, at the same time, one of the most 

 common of the Blattid^se known to occur in the State. The general 

 color is yellowish brown, the females often darker; all the limbs much 

 lighter than the body; the pronotum with two dark brown, longi- 

 tudinal bands separated by a yellowish stripe. The tegmina and 

 wings of the male extend to the end of abdomen, those of the female 

 are a little longer. Antennae dark brown, exceeding slightly the tips 

 of the closed tegmina. The body of the male is longer and narrower 

 than that of the female. 



Measurements: Male — Length of body, 13 mm.; of tegmina, 10 

 mm.; width of body, 4 mm.; Female — Length of body, 10 mm.; of 

 tegmina, 11 mm.; of antennae, 13 mm. 



