A guide to Oribatid Identification for the ABMI: - Royal Alberta Museum

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Almanac of Alberta Oribatida 2.3 13 January 2013The 2012 Almanac of Alberta Oribatida(Acari: Acariformes: Sarcoptiformes: Oribatida)(NB – Descriptions & names in the Almanacs are not indended as new nomenclatorial acts.)6David Evans WalterSarah Latonas & Kaylee ByersThe Royal Alberta Museum12845 – 102 Avenue, Edmonton, AB, T5N 0M6, CanadaDavid.Walter@gov.ab.caVersion 2.3When this Almanac series began, 132 species of oribatid mites were known from Alberta. As ofthis writting, about 344 records of species of Oribatida are now known from Alberta of which191 are clearly new records gathered during our reseach (21 are unnamed species that have notyet been studied). Of those 191 species new to the Province, 32 are new records for Canada (9being new to North America as well). Additionally, 11 of these have been described as newspecies (Behan-Pelletier & Walter [2009]; Behan-Pelletier & Eamer [2010]; Behan-Pelletier[2011]; Lindo [2011]; Behan-Pelletier & Walter [2012]); Walter & Latonas (in press) and 50others may represent species new to science. The 286 species with body lengths over 0.3 mm arekeyed and discribed in this section of the Almanac. The others may be found in Walter & Latonas(2012).Herein, the keys have been corrected and updated to reflect new collections and new speciesdescriptions. In Oribatella, seven new species were described from Alberta in 2012 (Behan-Pelletier & Walter 2012), one previous misidentification corrected (Oribatella quadricornuta(Michael, 1880)? = Oribatella jacoti Behan-Pelletier, 2011), and one literature misspellingcorrected (Oribatella reticuloides Hammer, 1955 = Oribatella reticulatoides Hammer, 1955),and Oribatella canadensis Behan-Pelletier & Eamer, 2010 is newly reported from the Province.Cultroribula taigagica Bayartogtokh, 2007 is newly reported from North America. Protoribatesrobustior (Jacot, 1937) is newly reported from Canada (Walter & Latonas 2013). Additionallythe newly described Ceratoppia valerieae Lindo, 2011 has been added to the appropriate key.Many of the keys have been revised to reflect new information and numerous new illustrationshave been added. Since the text is searchable and the formatting has proven awkward, the Indexhas been removed from this addition.Version 2.0 (2.1-2.2 mostly minor corrections and updates, and referneces readded)In this fourth posting of the Almanac, I’m joined by two coauthors and additional corrections,new images, literature citations, and ecological information have been added on an ad hoc basis.We have been able to unravel the complex of Eueremaeus quadrilamellatus (Hammer), Eu.marshalli Behan-Pelletier, and Eu. masinasin Behan-Pelletier satisfactorily using morphologicalcharacters supported by DNA (cox1) analysis and electron microscopy. Generic definitions in theGymnodamaeidae have been revised (Walter 2009 Zootaxa 2206: 23-44) and the first of the threedozen apparent new species discovered in Alberta has been described: Unduloribates dianae
Almanac of Alberta Oribatida 2.3 13 January 2013Behan-Pelletier & Walter (2009, Zootaxa 2294: 47-61). Also, we have begun attempting tounravel the etymologies of the scientific names used for oribatid mites in response to a requestfor common names to make the mites ‘more accessible to managers’. This process is bound to befraught with difficulties, but should be fun. Anyone who finds our choice of a common name tooodious is invited to respond with one of their own.Version 1.3In this third posting of the Almanac, additional corrections, new images, literature citations, andecological information have been added on an ad hoc basis. New identifications and distributionsfrom the third ABMI season have been added and a few previous identifications have beenrevised. For example, based on new collections and SEMs I now think that I can distinguish themysterious Eueremaeus quadrilamellatus (Hammer, 1952) from the similar Eu. marshalli Behan-Pelletier. Hemileius sp. 1 DEW has been resolved in favour of Hemileius haydeni (Higgins &Woolley, 1975), a new record for Canada. On the other hand, I’ve decided that the few specimenson hand of Malaconothrus should all be treated as M. cf mollisetosus Hammer, 1952. The generaof Gymnodamaeidae have been revised (Walter 2009) and several questionable species recordsfrom the literature have been deleted. Additionally, thanks to the indefatigable Valerie Behan-Pelletier, the first of the new species of oribatid mites discovered in Alberta has been described:Unduloribates dianae Behan-Pelletier & Walter (2009).The species “Comments” heading has been changed to “Overview” and eventually, each willcontain a summary that it is hoped will make the mite more understandable to non-acarologists.At the request of the data managers, I am adding ITIS numbers where practical (ITIS seems to beusing the on-line Subías catalogue which diverges from this Almanac in a number of areas).Where IT IS numbers are inappropriate, special RAM numbers are being generated. The keys tothe Damaeidae have been refined and expanded. Work has continued on the Oripodoidea section:with the help of Roy Norton; the descriptions and affinities of Zygoribatula species have beenfurther resolved thanks to help from Elizabeth Franklin.The pdf, it has been divided into its two sections to facilitate downloads. Section I contains allof the primary ABMI species. Section II contains not target mite taxa including the smalleroribatids and other Albertan mite collections.Version 1.2In the second posting of the Almanac, a number of changes and corrections have been madebased on comments by Bruce Halliday (CSIRO, Australia). Literature listings are now inchronological order. Latitudes and longitudes are standardized to a decimal format (e.g. 58.87 =58º52’12” N; -119.26 = 119º15’36” W). Red type notations (my book-keeping on ABMI matters)have mostly been removed, since they are of no use to readers and probably confusing. Inaddition, Oribatulidae, Suctobelbidae (especially
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A guide to Oribatid Identification for the ABMI: - Royal Alberta Museum

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