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HYMENOPTERA, Sphecidae (Nyssoninae) (Sphecoidea)-- <Images>
& <Juveniles> Description
There are relatively few genera and species in the subfamily
Nyssoninae. Their prey consists
mainly of Homoptera, especially Cercopidae and Membracidae. Gorytes
costalis Cress. utilizes adults of
several genera and each of the several cells in the nest in the soil is
provisioned with 3-6 tree hoppers. These
are permanently paralyzed and die within a week, which usually is the time
between laying of the wasp egg and completion of larval feeding. G.
brasiliensis Shuck. is similar in
its habits, but provisions its nests with various Fulgoridae in South America
(Clausen 1940/1962). This group was considered to be subfamily of
Nyssonidae by Finnamore & Michener (1993). There are around 225 species which are cleptoparasites of
Gorytinae Larrinae. The toughened integument of these black or
red wasps is attributed to their cleptoparasitic behavior. In North America there are more than 61
species known as of 2000. A key
reference to Sri Lankan species is Krombein (1984 & 1985). = = = = = = = = = = = = References: Please refer to <biology.ref.htm>, [Additional references
may be found at: MELVYL
Library] Bohart, R. M. & D. S. Horning, Jr. 1971.
California Bembicine sand wasps.
Bull. Calif. Insect Survey 13:
49 pp. Evans, H. E. & K. M. O'Neill. 2007.
The Sand Wasps: Natural
History and Behavior. Harvard Univ.
Press. |