Family Acanthosomatidae (Shield, Parent Bugs)

Adult Acanthosomatidae have moderate sized scutellum (typically triangular to subtriangular in shape) and two-segmented tarsi. Acanthosomatid bugs are most often confused with pentatomids, however the tarsi are three-segmented in the latter family. There are three subfamilies – Acanthosomatinae, Blaudusinae, and Ditomotarsinae. All subfamilies are listed as occurring in Australia, including Tasmania, though the last subfamily record for Tasmania is thought to be possibly the result of a locality error of an African species (Aesepus signoretii).

The subfamilies are separated generally on ventral characters. Acanthosomatinae typically have a well developed longitudinal sternal carina and abdominal spine (forwardly directed process from the base of the abdomen), the latter meeting, largely overlapping or fusing with the former. These are variously developed in Amphaces and Eupolemus. Blaudusinae lack a well developed sternal carina and the abdominal spine is long, clearly reaching beyond mid coxae and often to fore coxae or beyond (Blaudusini), or very short, sometimes longer and reaching front of mid coxae (Lanopini). Ditomotarsinae lack an abdominal spine.

Direct genus links A-Z
Anischys Amphaces Duadicus Eupolemus Elasmostethus Galgacus Hiarchas Panaetius Stauralia

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Subfamily Acanthosomatinae
Six genera are found on the Australian mainland, three of which also for Tasmania.

Genus Amphaces
    Amphaces  

Genus Eupolemus
    Eupolemus      IMG 9021

Genus Elasmostethus
     

Pending ID – Acanthosomatinae
Acanthosomatinae  Acanthosomatinae

Subfamily Blaudusinae
Nine genera are listed for the Australian mainland, only three of these (Andriscus, Mochus, and Monteithiessa) are not found in Tasmania.

Tribe Blaudusini
Genus Duadicus

   

Genus Hiarchas

Tribe Lanopini

       

Pending ID – Acanthosomatidae

   

References
Cassis, G, Namyatova, A., Tatarnic, N. and Symonds, C. 2012. Infraorder Pentatomorpha. Australian Faunal Directory. Australian Biological Resources Study, Canberra. Available at: http://www.environment.gov.au/biodiversity/abrs/online-resources/fauna/afd/taxa/PENTATOMOMORPHA . Last accessed: 28 April 2019.

Dallas, W. S. 1851. List of the specimens of Hemipterous insects in the collection of the British Museum. Richard Taylor, London.

Distant, W. L. 1899. Rhynchotal notes. III. Heteroptera: Discocephalinae and Pentatomidae (part). Annals and Magazine of Natural History 74: 421-445.

Distant, W. L. 1900. Rhynchotal notes. VI. Heteroptera: Dinidorinae, Phyllocephalinae, Urolabidinae and Acanthosominae. Annals and Magazine of Natural History 7 6: 220-234.

Distant, W. L. 1910. Rhynchotal notes. LII. Annals and Magazine of Natural History 8 6: 369-386, 465-481, 585-603.

Erichson, W. F. 1842. Beitrag zur Insecten-fauna von Vandiemensland, mit besonderer Berucksichtigung der geographischen Verbreitung der Insecten. Archiv für Naturgeschichte 8: 83-287.

Jensen-Haarup, A. C. 1930. New or little known Hemiptera Heteroptera I. Deutsche Entomologische Zeitschrift 1930: 215-222.

Kirkaldy, G. W. 1909. Catalogue of the Hemiptera (Heteroptera) with biological and anatomical references, lists of foodplants and parasites, etc. Prefaced by a discussion on nomenclature, and an analytical table of families. Vol. I : Cimicidae. Felix L. Dames, Berlin.

Kumar, R. 1974. A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types. Australian Journal of Zoology Supplementary Series 34: 1-60.Reuter, O. M. 1881. Acanthosomina et Urolabidina nova et minus cognita. Berliner Entomologische Zeitschrift 25: 67-86.

Walker, F. 1867. Catalogue of the Specimens of Heteropterous Hemiptera in the Collection of the British Museum. Part I. Scutata. E. Newman, London.

Westwood, J. O. 1837. A Catalogue of Hemiptera in the Collection of the Rev. F.W. Hope, with short Latin Descriptions of the New Species. J. C. Bridgewater, London.