1967] 
Roth — Rotation of the Ootheca 
95 
Table 1. — Direction of rotation of oothecae in different species 
OF POLYPHAGIDAE AND BlATTELLIDAE 
Species 
Number of Oothecae 
Rotated to : 
Left Right 
Source a 
Polyphagidae 
Arenivaga (Arenivaga) sp. A 
0 
1 
Arenivaga (Arenivaga) sp. B 
3 
1 
Arenivaga (Arenivaga) bolliana 
(Saussure) 
1 
0 
McKittr ick ( 1 9 64 ) b 
Therea petiveriana (Linnaeus) 
O C 
3 d 
Blattellidae 
Blattellinae 
Blattella germanica (Linnaeus) 
? h 
usual 
Gould and Deay (1938) 
0 
? 
Blochmann (1887) 
0 
? 
Ross (1929) 
0 
1 
Pope (1953) 
few 
usual 
Willis et al. (1958) 
0 
49 
Wheeler (1889) 
3 
97 
Wille (1920) 
6° 
62 
Blattella humbertiana (Saussure) 
0 
27 
Blattella unicolor (Brunner) 
0 
20 
Blattella vaga Hebard 
few 
usual 
Willis et al (1958) 
Ischnoptera deropeltiformis (Brunner) 
2 e 
18 
Ischnoptera panamae Hebard 
6“ m 
34 
Ischnoptera rufa rufa (Degeer) 
33 
78 
Loboptera decipiens (Germar) 
0 
2 
0 
? 
Lefeuvre (1959) 
Parcoblatta pcnsylvanica (Degeer) 
3 C 
8 C 
Parcoblatta uhleriana (Saussure) 
0 
1 
Parcoblatta virginica Brunner 
0 
1 
McKittrick (1964) b 
Pseudomops septentrionalis Hebard 
1 
0 
McKittr ick (1964) b 
Shavuella couloniana (Saussure) 
3 d s 
75 
Symploce hospes (Perkins) 
4 C 
111 
T artaroblatta tartar a (Saussure) 
0 
? 
Bey-Bienko (1950) 
Tartaroblatta karatavica Bey-Bienko 
0 
? 
Bey-Bienko (1950) 
Xestoblatta immaculata Hebard 
2 C 
24 
Ectobiinae 
Ectobius pallidus (Olivier) 
0 
19 
Roth and Willis (1957) 
Ectobius panzeri Stephens 
27 
3 
Brown (1952) 
a ) Where no reference is given the observations refer to this study. 
b ) From a photograph of a female carrying an ootheca 
c ) Oviposited by one female 
d ) Oviposited by 2 females 
h ) ? means that the number observed was not mentioned. 
m ) One of these females also rotated to the right. 
s ) These 2 females also rotated to the right. 
