246 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



There is evidence that larvae eat unhatched wasp eggs or other larvae. 

 In 34 oothecae exposed to many female wasps, the maximum number 

 of parasites to emerge was 306; yet an average of 601 wasp larvae 

 were dissected from four oothecae that had each been exposed to 50 

 female wasps one week earlier. The larvae usually eat all the host 

 eggs. Cockroach eggs that were not eaten by the wasp larvae some- 

 times developed but usually failed to hatch. Adult wasps made one 

 to six emergence holes in the ootheca ; the average number in 42 

 oothecae was two holes. 



Number of parasites per ootheca. — In Blatta orientalis: One of 

 III oothecae exposed to female wasps yielded 48 parasites. In Eury- 

 cotis floridana: One ootheca parasitized in the field yielded 68 para- 

 sites ; 8 oothecae exposed to single wasps for their entire lifespan 

 yielded an average of 50 ±6 parasites (range 23-81); 34 oothecae 

 exposed to many wasps for their entire lifespan yielded an average of 

 1 98 ±8 parasites (range 93-306). In Periplaneta americana: Nine 

 oothecae of 152 exposed to the wasps were found to be parasitized 

 when dissected ; 1 1 adults emerged from one ootheca ; no parasites 

 emerged from the other 8 oothecae. 



Sex ratio. — 4 $$: i J* from ovipositions by isolated females. In 

 the one ootheca collected in the field, the ratio was 21.6 $$ : i cf 

 Parthenogenesis exists ; the unfertilized eggs produced only males. 



Anastatus tenuipes Bolivar y Pieltain 



Synonymy. — Anastatus hlattidarum Ferriere. Dr. C. Ferriere (per- 

 sonal communication, 1957) is of the opinion that his A. hlattidarum 

 is a synonym of A. tenuipes. He stated "I have never been able to see 

 the unique type of A. tenuipes B. y P., which is in Madrid, but the de- 

 scription agrees with A. hlattidarum. I had not yet knowledge of 

 Bolivar's description, when describing my species. The parasite of 

 cockroaches eggs [Supella supellectilium'] should be called A. tenuipes 

 Bol." Mani (1938) synonymized Solindenia blattiphagus Mani with 

 Anastatus hlattidarum. 



Natural hosts. — Supella supellectilium, Anglo-Egyptian Sudan (Fer- 

 riere, 1930, 1935) ; U.S.A., Arizona (Flock, 1941) ; Egypt (Alfieri, 

 in Hafez and Afifi, 1956). Ohio (Hull and Davidson, 1958). 



Periplaneta americana, India (Burks in Roth and Willis, 1954a). 



Cockroach, Hawaii (Weber, 1951) ; India (Mani, 1936). 



The following is based on parasites that developed on eggs of 

 Supella supellectilium (Flock, 1941) : Adult behavior. — Wasp may 

 be seen running rapidly on walls in buildings infested with the cock- 

 roach host. The wasp rarely flies but hops proficiently; when dis- 



