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Caeculus cassiopeiae sp. nov., female A anterodorsal view of rostrum and gnathosoma B detail of palp tarsus C detail of distal bothridial seta. Abbreviations: CH, chelicera; PA, palp; bo, bothridial seta; d, dorsal; df, reduced fixed cheliceral digit; dm, movable cheliceral digit; ζ, eupathidium; hyp, hypostome; l”, posterolateral; ld, laterodorsal; me, median eye; Po, naso seta; ω, solenidion; v’, anteroventral; v, ventral; v”, posteroventral. Scale bar: 0.1 mm (A).
Source publication
The genus Caeculus Dufour (Prostigmata, Caeculidae) contains 19 previously described species, most of which are found in North America, and for which no comprehensive phylogenetic treatment exists. Here, one new species from Alberta, Canada, is described: Caeculus cassiopeiae Bernard & Lumley, sp. nov. , and another caeculid known to be present in...
Citations
... In contrast, the genus Caeculus is rather diverse in the Nearctic Region (Fig. 12A) with 20 species covering, as a whole, a wide range (data from Banks 189; 1905; Bernard et al. 2020; Enns 1958; Franz 1952; Hagan 1985; Higgins and Mulaik, 1957a, b; McDaniel and Boe 1990; Mulaik 1945; Mulaik and Alfred 1954; Nevin 1943; Porta and Vazque Rojas 2020. Based on their first phylogeny of the genus, Bernard et al. (2020) suggest the possibility of the North American southwest origin of the genus, followed by a dispersal event to Europe of an ancestor of C. echinipes. The discovery of a new fossil species in Europe presenting so many morphological particularities suggest that modifications of the hypothesis about the origins of the genus may be necessary. ...
Caeculus fedrae sp. nov. is described from a series of three exemplars from Baltic amber (Eocene). This species is the first fossil representative of the genus Caeculus, the first fossil species of the family not belonging to the genus Procaeculus, and the second species of the genus in Europe. Phylogenetic relationships, morphological features and paleoecological implications of the finding are discussed.
This is a compendium of the mites (Arthropoda: Arachnida: Acari) known from the Province of Alberta in August 2021, except for the Oribatida >300 μm in length which are documented in Part I. Our primary goals are to provide a record of Alberta’s mite fauna and to provide identification tools (images, keys, diagnoses) to facilitate the identification of these mites by students and researchers. Please contact Lisa Lumley if you find errors or missing information, or if you have suggestions to make this document more user friendly.
