The bionomics of Anastatus sp. and its utilization for the control of lichee stink bug. Tessaratoma papillosa Drury

Huang, M.D.; Mai, S.H.; Wu, W.N.; Poo, C.L.

Acta Entomologica Sinica 17(4): 362-375


ISSN/ISBN: 0454-6296
Accession: 000527230

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Release of the indigenous egg parasite Anastatus sp. proved highly effective against, Tessaratoma papillosa (Dru.) on litchi [Litchi chinensis] in the Pearl River Delta, Kwangtung Province, China, during 1966-67. The Eupelmid overwintered as a prepupa within the host egg; overwintering began in mid-November and adults emerged in mid- to late March. Laboratory studies on the bionomics of the parasite showed that the egg, larval, prepupal and pupal stages and the life span of adult males and females (reared on honey) were 2, 5-6, 5-6, 6-7, 5-10 and 30-40 days, respectively. Temperature, but not humidity, had a significant effect on the development rate. However, adults that developed from immature stages exposed to high humidity had short life spans. The females laid an average total of 228.2 eggs each and a daily average of 5.7-11.3. Oviposition occurred mainly during the first 25 days after emergence, the most favourable conditions being 25-30 deg C and 70-80% R.H. Eggs of Samia cynthia ricini (Boisd.) (even after cold storage for a year) were suitable for mass-rearing the parasite. Development was by arrhenotokous parthenogenesis. More male offspring developed when pairing adults were exposed to dim light or high temperature or when host eggs were small or parasitised at a late stage of embryonic development. First- or second-instar parasite larvae could be kept in cold storage at 10-12 deg C for up to six months without adverse effects.