Chaetodactylus osmiae, phoretic deutonymph, ex Osmia rufa, Germany, BMOC 95-0422-121
Fig. 1. Chaetodactylus osmiae, phoretic deutonymph, ex Osmia rufa, Germany, BMOC 95-0422-121 Click to enlarge

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

Chaetodactylus osmiae (Dufour, 1839)

Trichodactylus osmiae Dufour, 1839: 276, Fig. 8.3 (holotype not designated, syntypes presumed lost; description of HDN); Gervais, 1844: 266 (part., not distinguished from Sennertia cerambycina, short description), Fig. 34-10; Murray, 1877: 252 (part.), Fig. Trichodactylus osmiae Dufour. (character discussion); Mégnin, 1880: 147 (evidence presented that Trichodactylus may be a developmental stage of other free-living Astigmata); Canestrini, 1888a: 395
Chaetodactylus osmiae: Rondani, 1866: 183 (France, (?) Italy, hosts Osmia, Xylocopa, Apis mellifera); Vitzthum, 1929: 77 (Middle Europe, ex Osmia rufa, Andrena spp., Megachile spp.; included in key); Zachvatkin, 1941: 394 (part.), Figs 78, 79, 644-650, not 678 (not separated from Ch. zachvatkini, description, included in key; France, Italy, England, Romania, Georgia, ?Russia: Volgogradskaya Oblast' ("Sarepta"), ex Osmia rufa, O. tricornis, O. kohlii); Turk, 1953: 82 (British Isles); Türk & Türk, 1957: 207, Figs 160-161 (Germany, Netherlands, Italy, England, former USSR, ex Osmia rufa, Osmia "rufiventris"); redescription of HDN, included in key); Lith, 1957: 197 (Netherlands, ex Osmia rufa, observation on biology in host nest, report of killing of bee larvae); Baker, 1962a: 229; Krombein, 1962: 238 (review of biology); Fain, 1966: 249 (historical review, discussion factors influencing formation of heteromorphic deutonymphs and possible ways of dispersal Belgium, ex Osmia rufa, O. cornuta); Elbadry, 1971: 88 (mention on possible parasitism); Grobov, 1978: 51 (review of historical records from Apis mellifera); De Jong et al., 1982: 245 (ex Apis); Baker, 1987: 65 (mention, authorship attributed to Dujardin); Bosch, 1992: 77 (infestation rates in wild and managed populations of Osmia cornuta in Spain); Chmielewski, 1993: 133 (Poland, ex Osmia rufa, Anthophora sp.; culture on pollen (started from HDNs), biology of postembryonic development in laboratory); Fain & Baugnée, 1996: 23 (Belgium, ex Osmia rufa, O. cornuta); Van Asselt, 2000: 221, Figs 1-26 (Belgium, ex Osmia rufa; historical review, redescription of all instars except for tritonymph, measurements, tentatively considered as senior synonym of Ch. nipponicus); Fain & Pauly, 2001: 127; Qu et al., 2003: 59; Krunić et al., 2005: 143 (Serbia and Montenegro (Belgrad), observations on biology; reported as pest of Osmia rufa, O. cornuta); Klimov et al., 2007a: 1371 (HDN included in morphological phylogenetic analysis, France; Belgium; England; Germany; Hungary; Croatia; Spain, ex Osmia rufa, O. tricornis, O. cornuta, O. niveata (as O. fulviventris); Klimov & OConnor, 2008: 219 (included in key)
Chaetodactylus (Chaetodactylus) osmiae: Fain, 1981b: 4 (incorrect authorship assignment (Dujardin), included in key, tentatively considered as senior synonym of Ch. mahunkai); OConnor, 1993a: 353 (genus-level character acquisition, authorship attributed to Dujardin); Kurosa, 1987: 373 (comparison with Ch. nipponicus; authorship attributed to Dujardin)
Trichotarsus Osmiae: Canestrini, 1888b: 23; Berlese, 1897: 105, Figs 4.6 (France, Italy, hosts Osmia spp., Andrena spp., Megachile sp.; authorship cited as "(Dufour, 1832) Canestrini"; HDN included in key)
Trichotarsus osmiae: Canestrini & Kramer, 1899: 149 (redescription of HDN, females and HDNs included in key); Giard, 1900: 377 (part., Belgium: Luxembourg, ex Osmia rufa; included in key, not distinguished from Ch. claviger); Oudemans, 1900: 117 (comparison with HDNs of Trichotarsus japonicus and T. alfkeni); Oudemans, 1901: 81 (included in key, comparison with Sennertia koptorthosomae); Michael, 1903: 17, Fig. 22, 39.13-15 (England, ex Osmia rufa, redescription of HDN, tritonymph, and adults. Feeding instars were reared from HDNs on old bee wax in laboratory); Oudemans, 1903a: 147 (included in key, assigned to group C in Trichotarsus); Ludwig, 1904: 216, Figs b, b' (France, ex Osmia cornuta, mention in review of Trouessart’s (1904a, b) works); Trouessart, 1904a: 235, Figs b, b' (France, ex Osmia cornuta; description of inert HDN, erroneously stated that it has female external genital organs and is inseminated by adult males, comparison with Ch. ludwigi); Trouessart, 1904b: 365 (France, ex Osmia cornuta; observation on development of inert HDN, erroneously stated that it has female external genital organs and is inseminated by adult males); Oudemans, 1905a: 22; Oudemans, 1905b: LXXX (short note on morphology); Popovici-Baznosanu, 1913: 32, Figs. 1-12 (Romania, ex Osmia bicornis, Osmia cornuta; description of postembryonic development, observation on biology in bee nests); Oudemans, 1911a: 165 (comparison with HDN of Chaetodactylus anthidii); Vitzthum, 1912d: 291; Vitzthum, 1919: 38 (Europe, ex Osmia rufa, Andrena spp., Megachile spp.; comparison with HDNs and adults of Trichotarsus ludwigi); Vitzthum, 1922: 63 (hosts Andrena spp., Megachile spp.; correlated with the "Trapp's mite" that supposedly killed honey bees in Strasbourg in 1884); Knülle, 1959: 385 (short note on leg morphology of inert HDN)
Chaetodactylus mahunkai Samšiňák, 1973: 404, Figs 3-4 (description of HDN; Hungary, host unknown; holotype and 1 paratype HDNs in "Parasitologischen Institutes in Praha" (not found in PARU, F. Dusbábek, pers. comm.), unspecified number of paratypes in HNHM, synonymized by Fain, 1981b)
Misidentifications: Donnadieu, 1868 (Chaetodactylus claviger); Banks, 1902: 176 (Chaetodactylus krombeini or Ch. rozeni); Abou Senna, 1997 (Chaetodactylus claviger); Fain et al., 1992 (Chaetodactylus chrysidis); Kuhlmann, 1998: 72 (probably Chaetodactylus chrysidis)

Biology. Serious pest of managed populations of Osmia cornuta and O. rufa in Europe (Bosch, 1992; Krunić et al., 2005).

Material (show database records).
Osmia rufa (as Osmia bicornis and Osmia fronticornis) (France) (type host)
Osmia cornuta (Latreille, 1805)
Osmia niveata (Fabricius, 1804)
Osmia tricornis Latreille, 1811

(because historical literature may not distinguish this species from Ch. zachvatkini, only verified records are listed here, see synonymy for additional hosts)

Distribution (show map). France (type locality); Belgium, England, Spain, Germany, Hungary, Croatia, Romania (Klimov & OConnor, 2008) (because historical literature may not distinguish this species from Ch. zachvatkini, only verified records are listed here, see synonymy for additional localities)


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