1970] 
Roth — Mate Genitalia of Blattaria 
1 17 
Pyramidal shaped elevation on segment 2, behind a slender horn, 
which is elongate, hook shaped, directed anteriorly, and reaches 
the posterior margin of segment 1. 4. 
4. Anterior margin of segment 2 roundly indented, semicircular in 
outline. Medial moundlike elevation on segment 1 similar in 
shape though smaller than the one found behind the horn on 
segment 2 (Figs. 48-49). proxima (Brunner). 
Anterior margin of segment 2 not as deeply excavated nor as 
clearly semicircular in outline. Raised medial ridge on segment 
1 not pyramidal in shape but more or less uniform in height 
for its entire length (Figs. 50-52). .... verticalis ( Burmeister) . 
The subgenita .1 plates of Poeciloderrhis males are highly asym- 
metrical and more or less similar in shape (see Fig. 8, in Princis, 
1967b). Epilampra cribrosa Burm. has tergites 1 and 2 modified 
(Princis, 1967b) and therefore is a. Poeciloderrhis. 
The status of the genus Audreia Shelford has been questionable and 
was based principally on a reduction in wings and tegmina in both 
sexes. It will be reported on elsewhere. The genitalia of Audreia 
catharina Shelford are obviously typical of species of “ Epilampra ’ 
which have tergal glands and I therefore place it in the genus 
Poeciloderrhis. The tergal glands and genitalia of catharina are 
closer to atriventris than they are to the other species of the genus. 
There may be some question as to the identity of verticalis and 
proxima. These are species which have lateral pale markings of the 
pronotum (Figs. 47, 50). The genitalia of proxima shown in Figs. 
4-6, came from a specimen (Fig. 47) determined by Rehn as ver >- 
ticalis ; however, its tergal gland was similar to the specimen deter- 
mined by Princis as proxima (Figs. 48, 49). I have seen a third 
species belonging to this complex (pale, lateral pronotal coloration) 
whose tergal glands differed from the species here considered to be 
proxima and verticalis. In the final analysis, only type males can 
solve questions of identity in these similar appearing species. 
Epilampra is in the tribe Epilamprini (McKittrick, 1964). Be- 
cause of the morphologic (tergal glands, subgenital plate) and geni- 
talic differences between Epilampra and Poeciloderrhis I suggest that 
the latter genus be assigned to the Poeciloderrhini. 
Figs. 50-52. Poeciloderrhis verticalis. (58, USNM). Serra Caraca, 
Matto Grosso, Brazil; genitalia in Figs. 13-15. The tergal glands are 
indicated by arrows (Fig. 50), and circled numbers (Fig. 51, dorsal). 
Fig. 52 is a lateral view. (det. Gurney). Rl = medial ridge on segment 1; 
H =: sclerotized horn on segment 2; M2 — pyramidal shaped horn on 
segment 2. 
