DIABEOTICA. 



549 



e. Elytra testaceous, fulvous, or red, with darker (sometimes blue) transverse 



bands or spots. 



107. Diabrotica nigro-fasciata. (Tab. XXXI. figg. 24 ; 25, var.) 



•Cerotoma nigrofasciata, Jac. P. Z. S. 1878, p. 996 . 

 <$. Lower part of the faee very deeply excavated; the fifth joint of the antennae strongly emarginate or 



concave at its upper margin. 

 Var. Lower part of the head flavous; elytra reddish-fulvous, the black transverse bands reduced to spots or 



entirely absent. 



Eab. Mexico, Cordova, Teapa, Jalapa, Acapulco, Tapachula (Hoge), Juquila, Toxpam, 

 Vera Cruz (Salle) ; Beitish Hondueas, R. Sarstoon, R. Hondo (Blancaneaux) ; Guate- 

 mala i (Salle), Aceytuno (Salvin), Capetillo, Zapote, Volcan de Atitlan, El Tumbador, 

 Cerro Zunil, Sabo, Lanquin (Champion); Nicaeagua, Granada (SallS); Costa Rica 1 

 (Van Patten) ; Panama, Bugaba, Volcan de Chiriqui, David (Champion). 



An abundant species in our region. The anterior coxal cavities prove, on a closer 

 inspection, to be really open, and the insect must therefore find its place in Diabrotica. 

 The male, like several of the allied species, has a deep frontal excavation and abnormal 

 antennee ; in the female the front is not excavate, and somewhat rugose. The three 

 transverse black elytral bands differ in width, and are sometimes only indicated or 

 altogether absent ; the elytra are thus in this latter form (principally from Mexico) 

 entirely fulvous. The elytra are very strongly punctured and almost rugose, and in the 

 female show traces of longitudinal raised ridges. The elytral sculpture is a distin- 

 guishing character of B. nigro-fasciata. 



We figure a typical specimen from Toxpam, and a variety from Juquila. 



108. Diabrotica connexa. (Tab. XXXII. fig. 20.) 



Diabrotica connexa, Lee. Proc. Acad. Phil. 1865, p. 212 \ 



Eab. Noeth Ameeica, Texas 1 .— Mexico, Tuxtla (Salle). 



Two specimens in the collection of M. Salle are named as above ; they agree perfectly 

 with the description of B. connexa. The elytral design is not unlike that of B. adelpha 

 and several allied species. The elytra (as well as the thorax) are flavous, and have the 

 anterior portion occupied by a transverse fulvous band, this band being emarginate at 

 the sides and including a small flavous spot near the base ; below the middle are two 

 small fulvous spots placed transversely. The long third joint of the antennae places 

 B. connexa in the present division. 



109. Diabrotica rufo-fasciata. (Tab. xxx. fig. 21.) 



Oblong ovate dilated posteriorly, flavous, the apical joints of the antenna fuscous, the head rufous; thorax 

 transversely grooved, impunctate; elytra closely punctured, flavous, a broad transverse band at the base, 

 and another below the middle, rufous. 



Length 3-4 lines. 



