Skip to main content Skip to main navigation menu Skip to site footer
Type: Articles
Published: 2010-11-18
Page range: 55–64
Abstract views: 42
PDF downloaded: 1

Post-larval stages of Ascoschoengastia (Laurentella) lorius (Gunther) (Acariformes: Trombiculidae) provide evidence for a nest-based life history

Queensland Museum, P.O. Box 3300, South Brisbane Q 4101 matthew
Acari nidicole arboreal tree hollow nest yeast endosymbiosis Psittaciformes

Abstract

While certain ecological groups of trombiculid mites are thought to be specialised for nest occupation, supporting evidence is rare. A putatively nest-specialised trombiculid is here described in detail. Larvae, a deutonymph and adults of the trombiculid genus Ascoschoengastia were collected from three tree hollow nests occupied by Eclectus parrots (Eclectus roratus) and Sulphur-crested Cockatoos (Cacatua galerita) at Iron Range, Cape York Peninsula. The larvae are A. (Laurentella) lorius (Gunther), a species originally described from an Eclectus parrot in Papua New Guinea. Deutonymph and adult Ascoschoengastia are also assigned to this species based on their co-occurrence with larvae in this specific and isolated microhabitat. A. (L.) lorius is inferred to have a nest-based life history. Active stases are described with attention to sensory setae. The previous synonomy of A. (L.) daria with A. (L.) lorius is rejected. A key to Australian species of Ascoschoengastia is presented.

References

  1. Audy, J.R. (1954) Malaysian Parasites IX. Notes on the taxonomy of trombiculid mites with description of a new subgenus. Studies of the Institute for Medical Research Malaya, 26, 123–170.

    Audy, J.R. (1956) Laurentella, a new subgenus of trombiculid mites with notes on biology and medical importance. Bulletin of the Raffles Museum, 28, 5–26.

    Cockings, K.L. (1948) Successful methods of trapping Trombicula (Acarina) with notes on rearing T. deliensis. Bulletin of Entomological Research, 39, 281–296.

    Domrow, R. (1957) Malaysian Parasites XXXI. Nymphs of Ascoschongastia Ewing and Laurentella Audy (Acarina, Trombiculidae). Studies of the Institute for Medical Research Malaya, 28, 394-–402.

    Domrow, R. (1974) Miscellaneous mites from Australian vertebrates. 1-48. Proceedings of the Linnean Society of New South Wales, 99(1), 15–35.

    Domrow, R. & Lester, L.N. (1985) Chiggers of Australia (Acari: Trombiculidae): an annotated checklist, keys and bibliography. Australian Journal of Zoology. Supplementary Series, 114, 1–111.

    Frances, S.P., Watcharapichat, P., Phulsuksombati, D. & Tanskul, P. (1999) Occurrence of Orientia tsutsugamushi in chiggers (Acari: Trombiculidae) and small animals in an orchard near Bangkok, Thailand. Journal of Medical Entomology, 36(4), 449–453.

    Goff, M.L., Loomis, R.B., Welbourn, W.C. & Wrenn, W.J. (1982) A glossary of chigger terminology. Journal of Medical Entomology, 19(3), 221–238.

    Gunther, C.E.M. (1939a) Observations on the life history of Neoschöngastia kallipygos Gunther 1939. Proceedings of the Linnean Society of New South Wales, 64, 471–473.

    Gunther, C.E.M. (1939b) Trombidiid larvae in New Guinea (Acarina: Trombidiidae). Proceedings of the Linnean Society of New South Wales, 64(1-2), 73–96.

    Hirst, S. (1926) On the nymphal form of the "Harvest Bug" Trombicula (Neotrombicula) autumnalis. Annals of Applied Biology, 8, 140.

    Kroman, R.A. (1979) The correlation of the life cycle of a trombiculid mite and its fungal endosymbiont.In: Piffl, E. (Ed.), Proceedings of the 4th International Congress of Acarology. Akadémiai Kiado, Budapest, pp. 483–491.

    Lipovsky, L.J. (1954) Studies of the food habits of postlarval stages of chiggers (Acarina, Trombiculidae). The University of Kansas Science Bulletin, 36(14), 943–958.

    Nadchatram, M. (1970) Correlation of habitat, environment and colour of chiggers, and their potential significance in the epidemiology of scrub typhus in Malaya (Prostigmata: Trombiculidae). Journal of Medical Entomology, 7(2), 131–144.

    Nadchatram, M. (1979) The nymphal leg chaetotaxy of seven species in seven genera of trombiculid mites.In: Rodriguez, J.G. (Ed.), Recent advances in acarology. Academic Press, New York, pp. 417–424.

    Traub, R. & Audy, J.R. (1954) Malaysian Parasites V: Species of Euschöngastia sensu lato (Acarina: Trombiculidae) from Borneo (1953). Studies of the Institute for Medical Research Malaya, 26, 77–88.

    Traub, R. & Wisseman Jr, C.L. (1974) The ecology of chigger-borne rickettsiosis (scrub typhus). Journal of Medical Entomology, 11(3), 237–303.

    Wharton, G.W. (1946) Observations on Ascoschöngastia indica. Ecological Monographs, 16, 151–184.

    Wharton, G.W. & Fuller, H.S. (1952) A manual of the chiggers. Memoirs of the Entomological Society of Washington, 4, 1–185.

    Womersley, H. (1952) The scrub-typhus and scrub-itch mites (Trombiculidae, Acarina) of the Asiatic-Pacific region. Records of the South Australian Museum, 10, 1–673.

    Womersley, H. & Heaslip, W.G. (1943) The Trombiculinae (Acarina) or itch-mites of the Austro-Malayan and Oriental regions. Transactions of the Royal Society of South Australia, 67, 68–142.