Resumo
The author presents some laboratory data on the biology of Pseudococcus maritimu (Ehrhorn) a potato pest in Brazil. With the exception of the first instar larvae, there is a broad difference betweei males and females, in shape, development and behaviour. The female feed throughout the period of development, going through three instars. The lif cycle takes an average of 73 days. The number of eggs per female averages 323 The male feeds only during the first and part of the second instar, and develop thereafter in a cocoon, passing through four instars. The life cycle takes an averag of 41 days. The adult lives an average of 3.4 days while the female adult lives 3J days. It appears that this species does not reproduce by parthenogenesis. Pseudococcus maritimus is a species widely distributed over many countries, livini on numerous kinds of plants.
Observações sôbre a biologia do Pseudococcus maritimus (Ehrhorn, 1900)(1)
Romeu de Tella(2)
Engenheiro agrônomo, Secção de Entomologia Aplicada, Instituto Agronômico de Campinas
SUMMARY
The author presents some laboratory data on the biology of Pseudococcus maritimu (Ehrhorn) a potato pest in Brazil.
With the exception of the first instar larvae, there is a broad difference betweei males and females, in shape, development and behaviour. The female feed throughout the period of development, going through three instars. The lif cycle takes an average of 73 days. The number of eggs per female averages 323 The male feeds only during the first and part of the second instar, and develop thereafter in a cocoon, passing through four instars. The life cycle takes an averag of 41 days. The adult lives an average of 3.4 days while the female adult lives 3J days. It appears that this species does not reproduce by parthenogenesis.
Pseudococcus maritimus is a species widely distributed over many countries, livini on numerous kinds of plants.
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LITERATURA CITADA
Referências bibliográficas
- 1. Boock, O. J. e A. G. Caron. O controle de Pseudococcus maritimus em tubérculo semente de batatinha, com "Rhodiatox". Rev. Agric, Piracicaba 25: 397 404. 1950.
- 2. Compere, H. Mealybugs and their insect enemies in South America. Sep. Univ Calif. Pub. Ent. 7 : 55-74. 1939.
- 3. Costa Lima, A. da. Em Terceiro catálogo dos insetos que vivem nas plantas do Brasil. Dir. de Estat. da Produção, Rio de J. pag. 1-460. 1936.
- 4. Costa Lima, A. da. Espécies de Pseudococcus observadas no Brasil (Homoptera Coccoidea Pseudococcinx). Bol. biol. Cl. Zool. Brasil 4 : 1-10. 1939.
- 5. Dickinson, "W. The grape mealybugs (Pseudococcus maritimus Ehrhorn). Order Homoptera. Family: Coccidx. 23rd 24th. Rep. Quebec Soc. Prot. Pi 1930-1932 : 97-107. 1932.
- 6. Essig, E. O. Em Insects of Western North America, pag. I-XI+1-1035, fig. 1-766 The Macmillian Co., New York. 1934.
- 7. Hambleton, E. J. Notas sôbre Pseudococcinse de importância econômica no Bras com descrição de quatro espécies novas. Arch. Inst. biol. S. Paulo 6: 105-120 1935.
- 8. James, H. C Sex ratios and the status of the male in Pseudococcinse (Hem. Coccidæ). Bull. ent. Res.. 28 : 429-461. 1937.
Datas de Publicação
-
Publicação nesta coleção
26 Maio 2010 -
Data do Fascículo
Dez 1952