First record of the genus Limnohalacarus (Acari: Halacaridae) from Mexico (original) (raw)
2016, Revista Mexicana de Biodiversidad
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Hydrobiologia, 2001
Two Halacaridae species belonging to the genus Copidognathus were collected among Thalassia testudinum leaves from Punta Allen on the Caribbean south coast of the Yucatán Peninsula (Quintana Roo State, Mexico) and are described in the present paper. Copidognathus yucatanensis sp.n. is characterised by a median transverse rectangular areola on AD made up of rosette pores, posterodorsal plate with two costae, costae in anterior and posterior region wide (3–4 pores) with prominent rosette pores; in the middle portion costae faint, 2–3 pores wide with feebly developed rosette pores, small ostium and also with pycnotic pores, epimeral process I present, ovipositor away from reaching level of perigenital setae I, tarsi III and IV with 4:3 dorsal setae. This species belongs to the `oculatus' group. Dissimilarity with closely related species is also reported. A second species of the genus Copidognathus, C. uniscutatus Bartsch (1984) was also recovered from the samples from Punta Allen. This is a first record of the species in the Atlantic Ocean and away from its type locality (The Philippines). Only small variation can be observed and from this we can conclude that some characteristics such as, e.g., reticulation of AD and PD area cannot be considered as distinctive. In addition to these descriptions, we report an overview of the Halacaridae species recorded so far from the Gulf of Mexico and the Caribbean Sea.
New Findings of Freshwater Halacarid mites (Acari: Halacaridae) in Mexico
Entomological Communications, 2022
Freshwater Halacaridae are poorly known in Mexico. The only species reported so far is Limnohalacarus cultellatus Viets, 1940 from Quintana Roo, but the country is still a white spot for this group of mites. Recently, some halacarid specimens were collected in samples from two locations in Mexico City. Herein we present the records of two species: Porolohmanella violacea (Kramer, 1879), and Porohalacarus alpinus (Thor, 1910), which increase the number of epicontinental halacarids to three. These records are the first for the country and extend the known worldwide distribution range for each of these species. Future studies will certainly increase the number of halacarid species, and probably the percentage of species of these aquatic mites in Mexico.
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