548 PHYTOPHAGA. 



104. Diabrotica adonis. (Tab. xxxi. fig. 21.) 



Diabrotica adonis, Baly, Ann. & Mag. Nat. Hist. 3rd ser. iv. p. 272 (1859) \ 

 Yar. Diabrotica zonaia, Harold, Coleopt. Hefte, xiii. 1875, p. 91 2 . 



Eab. Panama, Bugaba, Volcan de Chiriqui (Champion). — Colombia 2 ; Venezuela 1 ; 

 Amazons (coll. Jacoby). 



Found in abundance by Mr. Champion in Chiriqui. Central-American specimens 

 differ from the typical form in having entirely yellow legs and tarsi, and the elytra 

 either metallic purplish or green in colour, interrupted by a transverse narrow central 

 flavous band and the similarly coloured lateral margin. I scarcely think the Panama 

 insect differs sufficiently to be treated as distinct. 



105. Diabrotica festiva. 



Black, joints 6-8 of the antennae testaceous ; thorax transverse, obsoletely transversely grooved, testaceous ; 

 elytra bluish-black, scarcely punctured, the lateral and apical margins, and a narrow transverse band in 

 the middle, testaceous. 



Length 2|-3 lines. 



Head impunctate, black, the frontal tubercles but little raised, the space between the antennae scarcely 

 carinate ; antennae nearly as long as the body, the five lower joints obscure fuscous partly stained with 

 testaceous, the following three joints pale testaceous, the rest fuscous or black, the third joint more than 

 twice the length of the second ; thorax rather more than twice as broad as long, the sides straight at the 

 base, slightly rounded and widened in front, the anterior angles tuberculiform and each with a single seta, 

 the surface impunctate, with a distinct but not deep transverse depression on each side ; seutellum black ; 

 elytra distinctly punctured on the paler portion only, with an obsolete costa below the shoulder, very dark 

 bluish-black, this colour interrupted at the middle by a narrow transverse testaceous band which joins 

 the similarly-coloured lateral margin ; legs fulvous, the tarsi obscure fuscous. 



Eab. Panama, Bugaba, Volcan de Chiriqui (Champion). 



Much smaller than D. adonis or D. pulchella, Baly, and more finely punctured ; the 

 underside in one specimen is obscure testaceous. 



106. Diabrotica nicaraguensis. 



Below piceous ; head black ; thorax flavous, transverse, deeply sulcate ; elytra nearly impunctate, flavous, a 



broad band extending to the middle, and another band below the middle, black ; femora flavous. 

 Length 4 lines. 



Hob. Nicaragua, Chontales (Belt). 



D. nicaraguensis resembles in the pattern of the elytra D. adonis, Baly, D. peruana, 

 Jac, and D. cruciata; but may be known by the black, not metallic, bands of the 

 elytra, and the smooth impunctate elytral surface. The head is longer than broad ; the 

 palpi are flavous; the antennae are black (the last three joints are Wanting), and have 

 the third joint twice as long as the second ; the thorax is deeply transversely depressed 

 and impunctate ; and the elytral bands extend to the sutural (but not to the lateral or 

 apical) margins, and are divided in the middle by a narrow transverse flavous band. 



