Female Acarodynerus clypeatus, from Saussure (1852).

Belongs within: Eumeninae.

Acarodynerus is an Australian genus of mason wasps characterised by the presence of a pair of deep cavities on the posterior face of the propodeum that function as acarinaria. The type species A. clypeatus, known from southeast Queensland, has the acarinaria formed from a large, shiny, convex plate occupying the entire lower half of the posterior face of the propodeum and opening by two small and deep dimples; the rear face of the propodeum as a whole is deeply concave, and the first metasomal tergite is anteriorly truncate with the anterior and dorsal faces separated by a careniform ridge (Giordani Soika 1961).

Characters (from Giordani Soika 1961): Overall aspect elongate, sub-cylindrical, medium to large in size. Mesosoma elongate, postscutellum horizontal or slightly oblique, moderately convex, not transversely keeled, often with a slight median longitudinal depression; dorsal face of propodeum well developed so postscutellum does not form part of posterior face of mesosoma; lower part of posterior face of propodeum bearing large convex, shiny area with two large cavities on either side of median line, in which some mites are often observed. First metasomal tergite sub-truncate at the base, sub-cylindrical.

<==Acarodynerus Giordani Soika 1962C85
|--*A. clypeatus (Saussure 1853) [=Odynerus (Leionotus) clypeatus]C85
|--A. acarophilus Giordani Soika 1962C85
|--A. denticulatus Giordani Soika 1962C85
|--A. dietrichianus (Saussure 1869) [=Odynerus dietrichianus]C85
| |--A. d. dietrichianusC85
| `--A. d. rufocaudatus Giordani Soika 1962C85
|--A. drewsenianus Giordani Soika 1962C85
|--A. exarmatus (Giordani Soika 1937) [=Odynerus (Stenodynerus) exarmatus]C85
|--A. legatus Giordani Soika 1977C85
|--A. lunaris Giordani Soika 1977GS77
|--A. paleovariatus Giordani Soika 1962C85
|--A. posttegulatus (Giordani Soika 1937) [=Odynerus (Stenodynerus) posttegulatus]C85
|--A. propodalaris Giordani Soika 1962C85
|--A. quadrangolum Giordani Soika 1977C85
|--A. queenslandicus Giordani Soika 1962C85
|--A. spargovillensis (Giordani Soika 1937) [=Odynerus (Stenodynerus) spargovillensis]C85
|--A. spectrum Giordani Soika 1962C85
`--A. triangulum (Saussure 1855) [=Odynerus triangulum]C85

*Type species of generic name indicated


[C85] Cardale, J. C. 1985. Vespoidea and Sphecoidea. In: Walton, D. W. (ed.) Zoological Catalogue of Australia vol. 2. Hymenoptera: Formicoidea, Vespoidea and Sphecoidea pp. 150–303. Australian Government Publishing Service: Canberra.

Giordani Soika, A. 1961. Gli Odynerus sensu antiquo del continente Australiano e della Tasmania. Boll. Mus. Civ. Venezia 14: 57–202.

[GS77] Giordani Soika, A. 1977. Contributo alla conoscenza degli eumenidi australiani. Memorie della Società Entomologica Italiana 55: 109–138.

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