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Description of the developmental stages of Sosylus spp. (Coleoptera: Colydiidae) from New Guinea, parasites and predators of ambrosia beetles (Coleoptera: Platypodidae)

Published online by Cambridge University Press:  10 July 2009

Hywel Roberts
Hywel Roberts
Affiliation:
Forest Research Station, P.O. Box 134, Bulolo, Papua New Guinea
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Abstract

A description is given of some of the developmental stages of Sosylus vicinus (Grouv.), S. silius Hinton and S. reflexus Pope from Papua New Guinea. At least three instars are recognised in all species, and the first or primary instar is of the triungulin type. A triungulin is also reported as the primary instar of another colydiid, Asosylus rhysodoides (Pasc.). This is the first time triungulins have been found in the coleopterous family Colydiidae. Differences in the triungulin of the three species of Sosylus are recognised, based on the form and arrangement of segmental spines. The structure of the different instars with regard to their habits on the host is discussed, and a brief comparison is made with larvae of Meloidae and Rhipiphoridae, the only two other families of Coleoptera with triungulin first-instar larvae.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 70 , Issue 2 , June 1980 , pp. 245 - 252
Copyright
Copyright © Cambridge University Press 1980

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References

Browne, F. G. (1962). Sosylus spectabilis Grouvelle (Coleoptera, Colydiidae), a predator and parasite of African ambrosia beetles.—5th Rep. W. Afr. Timb. Borer Res. Unit 1961–62, 91–96.Google Scholar
Clausen, C. P. (1962). Entomophagous insects.—688 pp. New York, Hafner.Google Scholar
Linsley, E. G., MacSwain, J. W. & Smith, R. F. (1952). The life history and development of Rhipiphorus smithi with notes on their phylogenetic significance (Coleoptera, Rhipiphoridae).—Univ. Calif. Publs Ent. 9, 291–314.Google Scholar
Pope, R. D. (1980). A revision of the species of Sosylus (Coleoptera: Colydiidae) occurring in New Guinea.—Bull. ent. Res. 70, 235–244.CrossRefGoogle Scholar
Roberts, H. (1968). Notes on the biology of ambrosia beetles of the genus Trachyostus Schedl (Coleoptera: Platypodidae) in West Africa.—Bull. ent. Res. 58, 325–352.CrossRefGoogle Scholar
Roberts, H. (1969 a). A note on the Nigerian species of the genus Sosylus Erichson (Col., Colydiidae), parasites and predators of ambrosia beetles.—Jnl nat. Hist. 3, 85–91.CrossRefGoogle Scholar
Roberts, H. (1969 b). Forest insects of Nigeria, with notes on their biology and distribution.—Inst. Pap. Commonw. For. Inst. no. 44, 206 pp.Google Scholar