BIOTIC ASSOCIATIONS OF COCKROACHES — ROTH & WILLIS 259 



Natural hosts. — Periplaneta americana, New Caledonia (Lucas, 

 1879) ; India (Dutt, 1912) ; Reunion (Bordage, 1912). 

 Periplaneta australasiae, Hawaii (Swezey, 1944). 

 Periplaneta sp., India (Maxwell-Lefroy, 1909). 

 Cockroach. Mauritius (Reaumur, 1742) ; Burma (Bingham, 



1897). 



Experimental hosts. — Neostylopyga rhonihifolia, Perplaneta ameri- 

 cana, and Periplaneta australasiae, Hawaii (Williams, 1942, 1942a). 

 Zimmerman's (1948) listings probably were taken from Williams. 



Nesting sites. — Holes in walls ; holes in banyan and fig trees ; in 

 houses in drawers and cartons. Behavior. — Similar to that of A. as- 

 similis. Bordage (1912) gives a complete description of capture of 

 prey. The female wasp cuts off part of the cockroach's antennae, legs, 

 and wings ; she sticks her &gg onto the host's mesothoracic coxa. The 

 wasp frequents houses in search of prey. Five $?, supplied with a 

 cockroach per day, stored an average of 57 ±14 cockroaches; 8 5$ 

 stored an average of 45 ± 3 cockroaches ; these latter wasps were not 

 supplied with a cockroach per day throughout (mean values computed 

 from Williams, 1942). This wasp will not attack Nauphoeta cinerea 

 (Williams, 19423.) or Pycnoscehts surituimensis (Schwabe, 1950b). 

 On one occasion, A. compressa stung Diploptera punctata, but did not 

 oviposit (Williams, 1942a). Development. — Minimum 34 days, maxi- 

 mum 140 days (Williams, 1942). About 6 weeks (Swezey, 1944)- 

 Longevity of adults. — 13 $$ lived an average of iio±ii days (min- 

 imum 31, maximum 159) ; several J'J* lived 2 months (Williams, 

 1942). 



Ampulex fasciata Jurine 



Natural host. — Ectobins pallidus, France (Picard, 191 1, 1919) '. 

 Nesting sites are in brier or bramble stems, or in crevices in fig trees ; 

 the female possibly uses old nests of leaf-cutter bees. The feeding of 

 the wasp larva is similar to that of other Ampulex. Adult wasp 

 emerges by cutting open a passage through its cocoon and through the 

 anus of the cockroach, 



Ampulex ruficornis (Cameron) 



Natural hosts. — Cockroaches, Oriental region (Rothney in Sharp, 

 1899) : Nesting sites are in crevices in bark. The female grasps the 

 cockroach by an antenna to drag it to her nest. 



Ampulex sibirica Fabricius 



Synonymy. — Perkins referred to this species as Ampulex sibirica. 

 Williams (1942a), referring to Perkins's observations, mentions the 



