340 
Psyche 
[September 
two subfamilies and the fringe of preputial spines (Figs. 175, 178) 
place it in the Blaberinae. Hebard (1917) who placed Leurolestes 
(— Phoetalia) in the Epilamprinae noted that the male’s subgenital 
plate had “. . . features comparable to those found in Blaberus 
[Blaberinae].” McKittrick (1964, p. 34) concluded that “The 
Zetoborinae are closely related to the Brachycolini . . .” This is 
supported by the similarity in shape of L2d of certain species of 
Brachycolini (especially Phoetalia , Figs. 175, 178) with those 
found in many males of Zetoborinae (Roth, 1970b) ; however, there 
are no preputial spines in the Zetoborinae. 
Hebard (1919, p. 128) grouped Hormetica apolinari and PI. 
verrucosa together based on the black markings on the tegmina. 
The preputial spines of apolinari arise from a heavily sclerotized 
region (Figs. 18 1, 184) and though this region and the spines are 
reduced in verrucosa (Fig. 185) the shapes of their L2d’s indicate 
a close relationship. The L2d and preputial spines are much reduced 
in Hormetica suhcincta (Fig. 188), and show a resemblance to these 
structures in Brachycola (Fig. 193). Hormetica laevigata (the geno- 
type) is unique in lacking preputial spines (Fig. 191) and is the 
only member of the Blaberinae I have seen in which these spines are 
completely absent (except for rare aberrant specimens of Blaberus 
spp., Roth, 1969). The fringelike indentations of the preputial 
membrane of H. laevigata are reminiscent of this membrane in 
Phortioeca phoraspoides (Walker) (Roth, 1970b), though the in- 
dentations are broader in the former species. Hebard’s (1921, p. 
1 5 1 ) conclusion that Hormetica and Parahormetica are closely 
allied as indicated by Brunner is supported by the present study. 
Rehn (1937, p. 248) concluded that the genus Sibylloblatta was 
a member of endemic neotropical Brachycolae ( Hormetica , Para- 
hormetica ^ Brachycola, Styphon , and Bion [— Bionoblatta]) . The 
male genitalia of Styphon (Fig. 64) are clearly those of Blaberini, 
but the other genera grouped together by Rehn are Brachycolini. 
Rehn (1937, p. 252) placed Bionoblatta (Figs. 209-21 1) between 
IPormetica and Parahormetica but closer to Parahormetica (Figs. 
199-201), and much less closely related to Brachycola (Figs. 193- 
194) than to either of the other 2 genera. The marked reduction 
in preputial spines does indicate a close relationship to Parahormetica 
(e.g. P. bilobata, Figs. 199, 202), but also to Oxycercus (Fig. 206). 
The hook R2 of Bionoblatta (Fig. 210) differs somewhat in shape 
from this phallomere in other species of the tribe and the subapical 
incision extends beyond the middle of the hook; in the other genera 
