Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-07T12:32:57.160Z Has data issue: false hasContentIssue false

The Bionomics of Otiorrhynchus cribricollis, Gyll

Published online by Cambridge University Press:  10 July 2009

Extract

(1) The history of Otiorrhynchus cribricollis in Australia is traced and records of its distribution in other countries are cited.

(2) Methods used in the experiments are described.

(3) The incubation period of the egg was found to vary between 14 and 37 days. The average was 22·3 days.

(4) The habits of the larva are described. Dyar's Law was applied to determine the number of instars, which was found to be 10.

(5) The normal duration of larval life is from May to October or a period of about 5 months.

(6) About 10 per cent. of the larvae aestivate through one summer. These have a larval life of about 17 months.

(7) Normal life of the adult is from November to April, about 5 months, but some (about 11 per cent.) hibernate through one winter and thus live 17 months.

(8) The adults feed in two seasonal periods separated by an interval of about 6 weeks, during which time they are inactive.

(9) The adults have been observed to feed upon 21 different plants, representing 12 different families.

(10) Most of the eggs are laid in the autumn, but a few are laid in the spring.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1933

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

1Andrewartha, H. G. (1931). J. Dept. Agric. W. Australia, (2) viii, pp. 106114.Google Scholar
2Delassus, M. (1924). Rev. Agr. Afrique Nord, xxii, no. 239.Google Scholar
3Dyar, H. G. (1891). Psyche, v, pp. 420423.Google Scholar
4Grandi, G. (1912). Boll. Lab. Zool. Portici, vii, pp. 1718.Google Scholar
5Grandi, G. (1913). Boll. Lab. Zool. Portici, vii, pp. 7290.Google Scholar
6Gyllenhall, L. (1834). in Schoenherr, Gen. Spp. Curcul., ii, p. 582.Google Scholar
7Koebele, A. (1890). U.S.A. Dept. Agric., Div. Ent. Bull. 21 (Old series).Google Scholar
8Lea, A. (1927). J. Dept. Agric. S. Australia, xxx, pp. 582598.Google Scholar
9Lockwood, S. & Kieffer, H. (1930). Monthly Bull. Calif., xix, pp. 1739.Google Scholar
10Quinn, G. (1916). J. Dept. Agric. S. Australia, xix, pp. 967980.Google Scholar
11Searls, E. M. (1928). J. Agric. Res., xxxvi, pp. 639645.Google Scholar
11aSmith, F. F. (1930). J. Wash. Acad. Sci., xx, p.185.Google Scholar
12Silantiev, A. A. (1905). Zool. Anz., xxix, p. 583.Google Scholar
13Taylor, R. (1930). J. Econ. Ent., xxiii, pp. 587595.Google Scholar
14Vassiliev, J. (1909). Zool. Anz., xxxiv, pp. 2931.Google Scholar