Mexican and Central American Chauliognathinae. 131 



Daiphron. 



Daiphron, sect. I, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, pp. 66 (1881), 277 (1885). 



This genus, type D. lyciforme, is provisionally retained 

 for the species with the elytra greatly widened posteriorly 

 in both sexes, the head feebly developed, and the antennal 

 joints 3-11 more or less widened or serrate. The male of 

 D. proteum, Gorh., cannot possibly be separated generically 

 from Chauliognaihus corvinus, which has simple antennae 

 in the male and dilated subserrate antennae in the female. 

 D. lyciforme and D. personatum, again, have these organs 

 formed very much as in Chauliognaihus sodalis, so that 

 the antennal structure alone cannot be used to distinguish 

 Daiphron from Chauliognaihus. In addition to the four 

 Central American forms, there are various others from 

 Tropical South America in the Fry collection at the British 

 Museum and in the University Museum at Oxford. The 

 former represent two sections : — 



Antennae, ^ $, very elongate, gradually tapering 

 towards tip, joints 3-10 moderately widened 

 or subserrate Species 1, 2. 



Antennae, (J $, much shorter, rapidly tapering 

 towards tip, the intermediate joints greatly 

 widened and serrate Species 3, 4. 



1. Daiphron lyciforme. 



Daiphron lyciforme, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 66, pi. 5, fig. 2 ($) (1881) (nee C. lyciformis, 

 Bourgeois, 1887). 



Hab. Mexico, Chinautla (Salle); Guatemala, Alta 

 Vera Paz; Nicaragua. 



Var. o. Elytra, prothorax and scutellum ochreous. 



Daiphron ochraceum, Gorh., loc. cit. pp. 67, 277 (excl. var.). 

 Hab. Guatemala, Alta Vera Paz ; Costa Rica ; Panama. 



(^. Aedeagus : median lobe obliquely bent, emarginate on the 

 upper edge before the apex, the apex itself produced into a long, 

 spoon-shaped process ; left lateral lobe long, feebly sinuate, nar- 

 rowed to the tip, the latter straight ; right lateral lobe stout, longer 

 than the left, curved upwards from about the middle, and produced 

 into a sharp slender tooth at the tip. Plate IV, figs. 1,1a. 



