484 
Psyche 
[December 
cision and its tip is nipple shaped (Fig. 354). The setal brush of Li 
extends vertically behind the darkly sclerotized cleft region (Fig. 
355 ) • 
Though originally described as an Epilampra , yersiniana has been 
placed in the genus Hedaia (by Saussure, Finot, Kirby, Hebard, and 
Rocha e Silva Albuquerque) and was listed by Kirby as a Rhabdo- 
blatta (Princis, 1967). Princis (1967) listed the species under Epi~ 
lamprci and stated (personal communication) that “ Hedaia is a 
Malagassy genus and I do not believe that it occurs in South Amer- 
ica. Probably a new genus is required [for yersiniana].” 
Shelf or di Group 
[ Epilampra shelf ordi Hebard (Figs. 356-358)] 
E. shelf ordi is the only species belonging to this group. It is unique 
in that L2d is absent and the preputial membrane is in the form of 
a rounded hollow cylinder (Fig. 356) covered with microtrichia. 
The R2 lacks a subapica .1 incision (Fig. 357). No setal brush is 
present on Li (Fig. 358). According to Hebard (1919, pp. 106- 
107), E. shelf ordi “. . . belongs to an apparently exclusively South 
American group of the genus ... To this group belong E. conspersa 
and E. agathina , of which single specimens are at hand. More mate- 
rial may show these forms to be generically distinct.” 
Summary 
The male genitalia of species of Epilampra are not only useful for 
specific determinations but can also be used to show species relation- 
ships. Thirty-six species of this genus have been divided into the 
following Groups and Subgroups: 
1. Mexicana Group: — mexicana , fallax , conferta. 
2. Abdomennigrum Group: — abdomennigrum , maya , sagitta, 
taira , grisea , jorgenseni, berlandi , guianae. 
3. Burmeisteri Group 
a. Subgroup A: — burmeisteri , tainana, quisqueiana , sabu- 
losa , wheeleri , gundlachi , haitensis, hamiltoni, bromeliadarum , ga<- 
tunae , fugax , exploratrix. 
b. Subgroup B : — opaca , substrigata, Columbiana, latifrons, 
basistriga, thunbergi , castanea. 
c. Subgroup C : — azteca, crossea. 
4. > H eusseriana Group : — heusseriana. 
5. Sodalis Group: — sodalis. 
6. Y ersiniana Group : — yersiniana. 
7. Shelf ordi Group: — shelf ordi. 
