1966] 
Gurney and Roth — Cockroaches 
203 
palpus longer, exemplified by antepenultimate segment clearly more 
than half as long as width of interocular space (palpus shorter in 
Agmoblatta, , antepenultimate segment decidedly less than half as long 
as width of interocular space) ; supra-anal plate of female more 
acutely triangular than in Agmoblatta; male abdomen without tergal 
specialization ; subgenital plate of female with entire, uncleft pos- 
terior margin. Male genitalia and subgenital plate are illustrated 
in Figs. 11-14. 
Type-species: Loboptera insularis R. S. Albuquerque and Gurney. 
The name Isoldaia is adapted from the given name of Mrs. Isolda 
Rocha e Silva Albuquerque in recognition of her sustained efforts 
to broaden the knowledge of South American Blattaria. 
A habitus figure of a female of Agmoblatta thaxteri is in Hebard 
(1932), and one of Isoldaia insularis is in R. S. Albuquerque and 
Gurney (1963). Readers are referred to page 178 of McKittrick 
(1964) for information about the subfamily assignment of the 
genera wherein the phallomeres of Lophoblatta Hebard, Euthlasto- 
blatta Hebard, and Supella Shelford represent the Plectopterinae, 
and Pseudomops Serville and Blattella Caudell represent the Blattel- 
linae. 
The following is a key for distinguishing Loboptera and several 
similar genera: 
1. Conspicuous hook-shaped sclerite of male genitalia occurs as part 
of left phallomere (Figs. 3-5, L3) ; one or both paraprocts of 
male armed with a hook or spines ( Fig. 1 ) ; armature of ventro- 
anterior margin of front femur (Fig. 7) includes heavy though 
short spines basad of 3 terminal ones (Type A) (Old 
World) 2 
Conspicuous hook-shaped sclerite of male genitalia occurs as 
part of right phallomere (Figs. 10, 11, R2) ; paraprocts of 
male simple, not distinctly armed (Fig. 13) ; armature of ventro- 
Explanation of Plate 14 
Figs. 15-20. Agmoblatta thaxteri (Hebard). 
15. Dorsal view of male; arrow points to the tergal gland on the seventh 
segment (X 5.2). 16. Dorsal view of female (X 6.0). 17. Lateral view 
of ootheca (X 17.2). 18. Ventral view of ootheca; note deep medial 
longitudinal groove (X 17.2). 19. Ventral view of end of the abdomen of 
a female forming an ootheca; arrow points to medial cleft in subgenital 
plate (X 8.8). 20. Seventh tergum of male showing the medial tergal 
gland (X28.7). 
Fig. 21. Lobopterella dimidiatipes (Bolivar). Seventh tergum of male; 
arrow points to one of the 2 pits (X 21.8). 
