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Halarachnidae
Halarachnidae is a small family of mites in the order Mesostigmata. Species Halarachnidae contains seven genera, with ten recognized species: * Genus ''Halarachne'' Allman, 1847 ** ''Halarachne halichoeri'' Allman, 1847 ** ''Halarachne laysanae'' Furman & Dailey, 1980 * Genus ''Orthohalarachne'' Newell, 1947 ** ''Orthohalarachne attenuata'' (Banks, 1910) * Genus ''Pneumonyssoides'' Fain, 1955 ** ''Pneumonyssoides caninum'' (Chandler & Ruhe, 1940) * Genus ''Pneumonyssus'' Banks, 1901 ** ''Pneumonyssus capricorni'' Domrow, 1974 ** ''Pneumonyssus simicola'' Banks, 1901 * Genus ''Rhinophaga'' Fain, 1955 ** ''Rhinophaga cercopitheci'' Fain, 1955 * Genus ''Sciurinyssus'' ** ''Sciurinyssus coreaensis'' * Genus ''Zumptiella'' Fain, 1962 ** ''Zumptiella furmani'' Fain, 1962 ** ''Zumptiella tamias'' Fain, Lukoschus & Whitaker, 1983 References Mesostigmata Acari families {{Mesostigmata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthohalarachne
''Orthohalarachne attenuata'' (family: Halarachnidae) is a species of mite normally found in the nasal passages of fur seals, sea lions, and walruses. In seals, the mites can be both prevalent (almost every single seal has them) and abundant (more than 1000 mites per seal). Although clinical observations and gross examination indicate that O. attenuata parasitization alone is not serious, some erosion and inflammation of the nasal turbinates and nasopharynx in seals has been observed in histological sections. If concomitant parasitization with ''O. attenuata'' and ''O. diminuta'' occurs, alveolar emphysema and more serious ailments can threaten the life of the mammal. Morphology Mature mites are shown to be elongated in the posterior part of body to form a club-shape with the rounded posterior extremity. Ten to twelve transverse rows of 8 to 12 sharp denticules and a few rows of minute spines are present on the ventral surface of the capitulum and the posterior surface of coxa II ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |