54 NORTH AMERICAN BLATTIDAE 



Cariblatta lutea minima Hebard (Plate II, figures 3 to 5.) 

 1916. Cariblatta lutea minima Hebard, Trans. Am. Ent. Soc xlii, p. 170, pi. 

 XIII, fig. 4. [cf, 9 ; localities listed in present paper.] 



This geographic race is confined to southern peninsular Florida 

 and the Florida Keys. It may be separated from t^'pical Iiitea by 

 the average smaller size; average paler and more yellowish buff, 

 rather than distinctly cinnamon, tones of general coloration; more 

 decided tegminal reduction, particularly in the male sex, in which 

 these organs show fully as much reduction as in the female; appar- 

 ently always vestigial wings, and by the narrower median pro- 

 duction of the male subgenital plate. 



Type. — cf ; ?^Iiami, Florida. March 3, 1915. (M. Hebard.) 

 [Hebard Collection, Type no. 418.] 



Description of Male. — Type. Size very small, form slighth' more robust than is nor- 

 mal in typical lutea. Pronotum with point of greatest width at the latero-caudal 

 angles, caudal margin nearly straight, more truncate than in this sex of lutea. '''^ Teg- 

 mina decidedly reduced, reaching only to base of seventh dorsal abdominal segment; 

 with three longitudinal discoidal sectors (thus the median vein branches but once) 

 and no cross-veinlets. Wings vestigial. Supra-anal plate as in typical lutea. Sub- 

 genital plate as in that race, but with specialized styles slightly closer to each 

 other and production of intervening portion of distal margin very small, sub- 

 quadrate, very slightly longer than wide. 



Allotype. — 9 ; Miami, Florida. March 14, 1916. (M. Hebard.) 

 [Hebard Collection.] 



Description of Female. — Allotype. Similar to male, but larger and distinctly more 

 robust. Pronotum slightly broader, caudal margin straight, truncate. Tegmina 

 and wings much as in male, except that dextral tegmen has four discoidal sectors. 

 Supra-anal plate very small, strongly transverse, weakly produced, with distal 

 margin showing a small, short, median concavity. Subgenital plate as in t\pical 

 lutea. 



Measurements {in millimeters) of extremes in series 



Length of Length of Width of Length of Width of 



body pronotum pronotum tegmen tegmen 



cf (29) 5 4-7 -7 I. 8-2. I 2.6-3.1 3.6-s 1.7-2 



9 (3.^) 5-8-« 2-2.3 2.7-3.3 3 -6-4 -7 1.8-2.2 



" As we have found elsewhere in the Blattidae, tegminal reduction appears to be 

 accompanied by a broadening of the pronotum, with a lessening of the convexity of the 

 caudal margin and a coincident shifting caudad of the point of greatest pronotal width. 

 The pronotal features given above show rather this adjustment than what might appear, 

 to the casual observer, to be features separating the present race from lutea lutea and the 

 species widely from the other members of the genus. 



