Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-10T11:51:20.094Z Has data issue: false hasContentIssue false
  • English
  • Français

Aspects of the biology of Diclidophlebia eastopi Vondracek and D. harrisoni Osisanya (Homoptera, Psyllidae)

Published online by Cambridge University Press:  10 July 2009

E. O. Osisanya
E. O. Osisanya
Affiliation:
Department of Agricultural Biology, University of Ibadan, Nigeria
Get access Rights & Permissions [Opens in a new window]

Abstract

Diclidophlebia eastopi Vondráček and D. harrisoni Osisanya are pests of the timber tree Triplochiton scleroxylon in Nigeria. The egg and five nymphal instars are described and illustrated. Under laboratory conditions the life-cycle (egg-egg) of D. eastopi was completed in 18½ days, and mated fed females had a life span of 15 days. The sex ratio in the field was 1:1. Nymphs feed near the veins of mature leaves, causing premature leaf fall; adults feed on leaves of any age and cause no symptoms. Fecundity averaged 502 eggs, with a daily oviposition rate of 38; most eggs are laid in batches along the veins of mature leaves. The life-cycle of D. harrisoni was 16 days; mated and fed females lived 10 days. The feeding of firstinstar nymphs near the margins of young leaves causes leaf tunnels to form, inside which the nymphs complete their development; adults feed only from young leaves. In the field the female:male ratio was 2:3. Fecundity averaged 131, with a daily oviposition rate of 31. Fertility improved with multiple matings. The eggs are laid singly, partially embedded in the epidermis, and only on young leaves.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 64 , Issue 1 , August 1974 , pp. 9 - 17
Copyright
Copyright © Cambridge University Press 1974

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Carter, W. (1962). Insects in relation to plant disease.—705 pp. New York, Interscience.Google Scholar
Clark, L. R. (1962). The general biology of Cardiaspina albitextura (Psyllidae) and its abundance in relation to weather and parasitism.—Aust. J. Zool. 10, 537–586.CrossRefGoogle Scholar
Eidt, D. C. (1963). Report to the government of Nigeria on a survey of insect pests of indigenous trees in plantations and nurseries.—64 pp. Rome, F.A.O. (Report no. 64/A/08461p:1775.)Google Scholar
Jensen, D. D., Griggs, W. H., Gonzales, C. Q. & Schneider, H. (1964). Pear decline virus transmission by pear psylla.—Phytopathology 54,1346–1351.Google Scholar
Lewis, I. F. & Walton, L. (1964). Gall formation on leaves of Celtis occidentalis L. resulting from material injected by Pachypsylla sp.—Trans. Am. microsc. Soc. 83, 62–78.CrossRefGoogle Scholar
Lindner, R. C., Burts, E. C. & Benson, N. R. (1962). A decline condition in pears induced by pear psylla.—Plant. Dis. Reptr 46, 59–60.Google Scholar
Osisanya, E. O. (1968). A note on the distribution of Diclidophlebia sp. (Homoptera: Psyllidae) in southern Nigeria.—Nigerian Ent. Mag. 1, 117–122.Google Scholar
Watmough, R. H. (1968). Population studies on two species of Psyllidae (Homoptera, Sternorhyncha) on broom (Sarothamnus scoparius (L.) Wimmer).—J. Anim. Ecol. 37, 283–313.CrossRefGoogle Scholar
White, M. G. (1964). Research in Nigeria on the iroko gall bug (Phytolyma sp.) injury to iroko tree (Chlorophora sp.).—Nig. For. Information Bull. no. 18, 72 pp.Google Scholar
White, T. C. R. (1968). Uptake of water by eggs of Cardiaspina densitexta Taylor (Homoptera: Psyllidae) from leaf of host plant.—J. Insect Physiol. 14,1669–1683.CrossRefGoogle Scholar
White, T. C. R. (1970 a). Some aspects of the life history, host selection, dispersal, and oviposition of adult Cardiaspina densitexta (Homoptera: Psyllidae).—Aust. J. Zool. 18, 105–117.CrossRefGoogle Scholar
White, T. C. R. (1970 b). The nymphal stage of Cardiaspina densitexta (Homoptera: Psyllidae) on leaves of Eucalyptus fasciculosa.—Aust. J. Zool. 18, 273–293.CrossRefGoogle Scholar
Williams, M. W., Batjer, L. P., Degman, E. S. & Burts, E. C. (1963). The susceptibility of some pear species to injury from pear psylla.—Proc. Am. Soc. hort. Sci. 82. 109–113.Google Scholar
Williams, M. W. & Lindner, R. C. (1965). Biochemical components of pear psylla and their relative toxicity to excised bean plants.—J. Insect Physiol. 11, 41–52.CrossRefGoogle Scholar