Chaetodactylus hirashimai, phoretic deutonymph, ex Osmia excavata, Japan, BMOC 04-0508-004
Fig. 1. Chaetodactylus hirashimai, phoretic deutonymph, ex Osmia excavata, Japan, BMOC 04-0508-004 Click to enlarge

Bee Mites : Acari : Acariformes : Sarcoptiformes : Chaetodactylidae : Chaetodactylus

Chaetodactylus hirashimai Kurosa, 1987

Chaetodactylus (Chaetodactylus) hirashimai Kurosa, 1987: 374, Figs 1-8 (holotype in NSMT, paratype HDNs in author's collection, distributed to "certain foreign museums", UMMZ (6)).
Chaetodactylus hirashimai: Qu et al., 2002: 121 (observation on biology and host damage); Klimov et al., 2007:112;
Klimov & OConnor, 2008: 218 (included in key)
Saproglyphus sp. Hirashima, 1957: 200, Fig. 3 (photo on host) (brief observations on host mortality by mite on O. excavata)
Chaetodactylus sp. Krombein, 1962: 239 (assignment to genus Chaetodactylus of Saproglyphus sp. sensu Hirashima (1957))

Material (show database records).
Biology. Pest of Osmia excavata used as pollinator in orchards in Japan. If the number of mites in an infested cell is more than 50, then can kill the bee egg or developing larva (up to the early third instar) (Qu et al., 2002).
Osmia (Osmia) excavata Alfken, 1903 (type host)
Osmia (Osmia) cornifrons (Radoszkowski, 1887)
Osmia (Osmia) pedicornis Cockerell, 1919
Osmia (Helicosmia) jacoti Cockerell, 1929 (as Osmia (Helicosmia) imaii)
Distribution (show map). Japan: Honshu (Nara Pref., Nara-shi, Furuichi-chô) (type locality), Kyushu


Hirashima, Y. 1957. Further observations on the life-history and habits of Osmia excavata Alfken (Hymenoptera, Megachilidae). Scientific Bulletin of Faculty of Agriculture, Kyushu University.16: 193-202.
Klimov, P. B. & B. M. OConnor. 2008. Morphology, evolution, and host associations of bee-associated mites of the family Chaetodactylidae (Acari: Astigmata), with a monographic revision of North American taxa. Miscellaneous Publications Museum of Zoology University of Michigan.199: 1-243.
Krombein, K. V. 1962. Natural history of Plummers Island, Maryland. XVI. Biological Notes on Chaetodactylus krombeini Baker, a parasitic mite of the megachilid bee, Osmia (Osmia) lignaria Say (Acarina, Chaetodactylidae). Proceedings of the Biological Society of Washington.75: 237-250.
Kurosa, K. 1987. Two new Chaetodactylus (Acari, Chaetodactylidae) associated with Osmia (Hymenoptera, Megachilidae) in Japan. Kontyu.55: 373-381.
Qu, D., Y. Maeta, M. Goubara, K. J. Nakatsuka, J. Kozo & K. Kenji. 2002. Reproductive strategy in the two species of cleptoparasitic astigmatid mites, Chaetodactylus nipponicus and Tortonia sp. (Acari: Chaetodactylidae and Suidasiidae), infesting Osmia cornifrons (Hymenoptera: Megachilidae). I. Invasion/infestation patterns and partial use of the host food. Japanese Journal of Entomology (New Series).5: 121-141.



B. OConnor and P. Klimov ©
Created: Jun 07, 2011
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