340 PROCEEDINGS OF THE NATIONAL MUSEUM vol. us 



Key to Species of Eccopiopsis 



1. Elytra entirely dark except the margin 2 



Elytra not entirely dark 3 



2. Elytra strongly costate, Brazil . . . cyanocosmesa, new species (p. 346) 

 Elytra only feebly costate, Argentina . argentinensis, new species (p. 347) 



3. Elytra dark with four pale spots . . quadrimaculata, new species (p. 350) 

 Elytra not dark with four pale spots 4 



4. Elytra with a basal and an apical fascia 5 



Elytra not with a basal and an apical fascia 6 



5. Prothorax twice as wide as long, Costa Rica . laticollis, new species (p. 342) 

 Prothorax not twice as wide as long, Peru . . clara, new species (p. 344) 



6. Elytra distinctly and usually strongly costate 7 



Elytra at most only feebly costate 9 



7. Occiput of head piceous, Costa Rica . costaricensis, new species (p. 341) 

 Occiput of head pale 8 



8. Prothorax approximately twice as wide as long, Bolivia. 



boliviensis, new species (p. 343) 

 Prothorax not twice as wide as long. Central America. 



denticornis (Jacoby) (p. 340) 



9. Third and fourth antennal joints in male not noticeably enlarged and 



inconspicuously excised at adjoining ends. 



piceofasciata, new species (p. 345) 



Third and fourth antennal joints in male much widened and much excised 



at adjoining ends 10 



10. Elytra pale with a lateral dark vitta from humerus to apical curve and a 

 short sutural vitta to the middle and on each elj^ron three spots in a row 

 between vittae mexicana, new species (p. 348) 



Elytra mostly dark with a pale median vitta that turns horizontally to the 

 margin and at apex another pale curving ring enclosing a dark sutural 

 spot cavifrons (Jacoby) (p. 347) 



Eccoptopsis denticornis (Jacoby) 



Figure 91 



Neobrotica denticornis Jacoby, in Godman and Salvin, Biologia Centrali-Amer- 

 icana, Coleoptera, vol. 6, pt. 1, p. 578, 1887. 



About 6 mm. in length, oblong oval, shining, the elytra strongly 

 costate, pale yellow with deep brownish or even piceous markings 

 across the elytra in the shape of a humeral spot, a spot common to 

 both elytra below the scutellum on the suture, a band across the middle 

 sometimes interrupted at the suture, and another before the apex, 

 sometimes lunate or sometimes abbreviated to a spot on each elytron. 

 Antennae in the male with the third and fourth joints deformed, 

 much swollen and excavated at adjoining ends, and the head with 

 the front excavated and having odd developments in the shape of 

 shelving and spines. 



Head with the interocular space more than half width of head, the 

 frontal tubercles swollen and a median depression above them, lower 

 front in female slightly excavate and with no trace of a carina down 



