Morphology of the sting apparatus of the digger wasp Oxybelus uniglumis (Linnaeus, 1758) (Hymenoptera, Crabronidae), with emphasis on intraspecific variability and behavioural plasticity

Author:

Matushkina Natalia A.,Stetsun Halyna A.1

Affiliation:

1. Institute of BiologyTaras Shevchenko National University of KyivUkraine

Abstract

The solitary digger wasp Oxybelus uniglumis (Linnaeus, 1758) uses its sting not only for paralyzing prey but also for transporting the prey to the nest site. The sting morphology is expected to reflect the mechanical overloading applied to the sting during prey transportation. In this paper, we provide a detailed description of the sting skeleton of Oxybelus uniglumis and define specific morphological characters in order to reveal possible morphological predictions for conducting specific prey-carriage behaviour. The most important features are the following: (1) In contrast to all other known Apoidea, Oxybelus uniglumis has a single (instead of double) valvillus; (2) There are no distinct borders between the rostral process and the 2nd valvula, so the valvula is relatively strongly articulated to the basal elements of the sting; (3) The internal skeleton exhibits intraspecific variation, which has not previously been recorded for Hymenoptera. Results are discussed from a functional standpoint.

Publisher

Brill

Subject

Insect Science,Ecology,Ecology, Evolution, Behavior and Systematics

Reference32 articles.

1. Small–scale sympatric digger wasp Oxybelus argentatus and Oxybelus trispinosus segregate activity, hunt for different prey, and diverge in nesting behaviour;International Journal of Entomology,2013

2. Revision of the enigmatic Australasian genus Miropotes Nixon (Hymenoptera: Braconidae: Microgastrinae), with comments on the phylogenetic importance of the female ovipositor system;Systematic Entomology,1990

3. Notes on the habits and prey of twenty species of British hunting wasps;Proceedings of the Linnean Society of London,1948

4. Phylogenetic analysis of the corbiculate Apinae based on morphology of the sting apparatus (Hymenoptera: Apidae);Cladistics,2007

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