446 PROCEEDINGS OF THE NATIONIAL MUSEUM vol.94 



Oligotoma texana (Melander) Enderlein, 1912, pp. 92, 109, fig. 62.— Mills, 1932, 



p. 648, figs. 1-4. 

 Anisemtia (Anisembia) texana (Melander) Ross, 1940b, p. 650, figs. 20-22, 28. 



Holotype.—^^Immature male" (or female?) in Museum of Compara- 

 tive Zoology (type No. 1639) . 



Type data. — Austin, Tex. (A. L. Melander) . 



Plesioty pes. —Aiate male, in United States National ^Museum, from 

 Victoria, Tex. ; and mature female, California Academy of Sciences, 

 from Arroyo Salado, Starr County, Tex. Both designated and 

 described by Ross (1940b). 



Distribution.— Texas, Louisiana, Mississippi, and Arkansas. 



New recorch. —T-EXAs : San Antonio, New Braunfels, Sequin, Tex- 

 arkana. Louisiana : Monroe. All collected by the writer. 



EemarJcs. — This is a very common species and, although often en- 

 countered under stones, is of tenest found on the bark of trees, especially 

 that of oaks with a rough surface. At Monroe, La., colonies of the in- 

 sect were very conspicuous on the shaded surface of large oaks border- 

 ing the city streets. 



The writer has recently had opportunity to study in detail the 

 biology of this species in the field and in laboratory cultures. An in- 

 teresting fact was noted in connection with the wingless condition of 

 certain of the males. A careful examination of the thorax of the 

 apterous male revealed that small wing pads are actually developed 

 and a slight modification of the scuta of the mesothorax and metatho- 

 rax is evident. It appears that the apterous condition in males of 

 texana results from a halting of the wing development (probably at 

 a stage comparable to the third instar of normal winged males), while 

 other male features develop in a normal manner. This condition is 

 precisely the same in apterous males of Oligotoma japonica Okajima, 

 which the writer has studied in large numbers. This subapterous con- 

 dition may prove to be characteristic of all species having dimorphic 

 males, as males of those species which never have winged males have 

 the scuta identical to the female, witli no trace of wing pads. 



ANISEMBIA (ANISEMBIA) VENOSA (Banks) 



Figures 76-79 



Oligotoma venosa Banks, 1924, p. 421, pi. 1, figs. 10, 13. 

 Saussiirella venosa (Banks) Davis, 1939d, p. 574, figs. 5-7. 

 Saussurembia (f) vetwsa (Banks) Ross. 1940b, p. 648. 



Anisembia {Anisembia) schwarzi Ross. 1940b, p. 652, figs. 2, 23-25 (Cayamas, 

 Santa Clara, Cuba) (new synonym). 



Holotype. — Male, on slide. Museum of Comparative Zoology (No. 

 14879). ' 



Type data. — Santa Clara, Cuba (Baker). 



