DIAPERmi NORTH OF MEXICO — TRIPLEHORN 385 



ately densely punctured; prostemal process convex between coxae, 

 its apex truncate, not prolonged toward mesostemum; anterior tibiae 

 with conspicuous mat of dense golden hairs on anterior surface, 

 outer apical angle noticeably expanded and strongly denticulate; 

 epipleura abruptly abbreviated anterior to apices of elytra. Male 

 aedeagus (pi. 6, fig. 60) extremely long and narrov,'^, apical sclerite, 

 comprising about % total length of aedeagus. Measurements: length 

 3.5-5.3 mm.; width 1.6-2.4 mm. 



Remarks. — This species possesses so many distinctive characters 

 that LeConte erected a new genus (Evoplvs) to receive it. The deep 

 postocular pits of the male are sufficient to separate it from most other 

 New World species of Neomida, with the exception of N. lecontei 

 and A^. lateralis from Colombia, both described by Bates. I have 

 studied a series of 36 specimens from Jamaica (MCZ) that were de- 

 termined as A'', lecontei and were verified by J. Balfour-Browne, who 

 compared them to tjrpes in the British Museum. The two species 

 are so closely related that they can be separated only by several 

 relative but constant characters which apply equally to males and 

 females. In general, it can be stated that the sculpture and punc- 

 tation of the entire dorsal surface of A^". Jerruginea is coarse, while 

 that of N. lecontei is quite delicate. Salient differences may be sum- 

 marized as follows: punctures of pronotum coarse and dense in N. 

 ferruginea, fine and sparse in A^. lecontei; elytral striae impressed 

 and coarsely punctured m A^. ferruginea, unmipressed and finely 

 punctured in N. lecontei; elytral intervals distinctly convex and con- 

 spicuously punctate m A^. ferruginea, flat and obscurely punctate 

 in A^. lecontei. Each species is remarkably constant in regard to 

 these characters and no intergradation in them was observed. The 

 male genitalia appear to be identical. 



In males of both species, the cephalic armature is often poorly 

 developed, rendering the postocular pits proportionately more 

 shallow. 



Types. — Evojdus ferruginea LeConte, MCZ 4671. A male bearing 

 an orange disk label signifying "Southern States"; the original 

 description lists "Louisiana, Wapler and Guex." Also in the LeConte 

 collection (MCZ) are 1 male and 2 females with the same data as 

 the type, and 1 male and 2 females from Enterprise, Fla., May 26. 

 Oplocephala castanea Motschoulsky; type locality, "Nouvelle-Orleans 

 en Louisiane." S. Kelejnikova pronounced vspecimens of Neomida 

 ferruginea (LeConte) from Brownsville, Tex., which agreed perfectly 

 v/ith the description, to be conspecific with the type, a female 

 (UMMZ). 



