1971] 
Moxey — Phasmatodea 
77 
the subgenital plate reaches only to the middle of segment X. 
Length 55 mm. (Figures 34 and 35). 
Cytogenetics: Virkki (1970) reported the karyotype of this 
species as 211=34 + XX; the male (Virkki’s number 180) 4 haploid 
number being I7 n + X. In the male, there was one pair of acro- 
centric, or almost acrocentric, autosomes forming a long rod bivalent 
and two pairs of metacentrics forming rings, the chiasmata being 
localized near the centromere. The other autosomes are small- to 
medium-sized. The X-chromosome is large and submetacentric. 
Habitat: I found this species never more than two-thirds of a 
meter off the ground on P/^gr-shrubs in the Luquillo Forest. 
Lamponius portoricensis Rehn, the common species of stick-insect 
in the Forest, also occurs frequently on Piper but is usually found 
at heights of about one to two meters. 
Derivation of name: Iphimedeia, a daughter of Triops, is a noun 
in apposition to the generic name. 
Rearing: In captivity, this species can be raised on Rhododendron 
spp., Persea americana, and Parthenocissus tricuspidata leaves. One 
female was kept alive from July to December, 1969; apparently she 
was a virgin at the time of capture, for she never laid any eggs 
during the time I observed her. From the recent collecting trip, 
I had three living females, one of which molted from a nymph to 
imago. The following notes on defensive behavior derive from 
observations made on these four. 
Behavior 5 : i) Primary defence — The insect is nocturnally active. 
4 Although I have not seen this specimen (it was sent by Virkki to Klaus 
Gunther in Berlin), the brief description given by Gunther {in litt .) con- 
vinces me that assignment to this species is extremely probable. 
5 In this discussion, I have followed the format and terminology used by 
Robinson (1969). 
Figure 19. A. iphimedeia. Female, left hind tarsus. 
Figure 20. A. iphimedeia. Male, left hind tarsus. 
Figure 21. Ocnophila poeyi. Female, left hind tarsus. 
Figure 22. A. iphimedeia. Male, lateral view of apex of abdomen. 
Figure 23. Ocnophila poeyi. Male, lateral view of apex of abdomen. 
Figure 24. A. iphimedeia. Female, lateral view of apex of abdomen. 
Figure 25. A. thomae. Female, lateral view of apex of abdomen. 
Figure 26. Ocnophila poeyi. Female, lateral view of apex of abdomen. 
Figure 27. A. iphimedeia. Male, ventral view of apex of abdomen. 
(cfm). C, cercus; SGP, subgenital plate; V, vomer. 
Figure 28. A. iphimedeia. Male, ventral view of apex of abdomen with 
the subgenital plate removed to expose the genitalia, (cfm). C, cercus; 
DGH, dextral genital hook; V, vomer. 
