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Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Lampsilini | Mesonaias umbrosa

Specimen USNM_1282354: Images

Mesonaias umbrosa (Lea, 1856), Veracruz, Rio Papaloapan off road from Ciudad Aleman to Tuxtepec; ca. 0.5 roadmiles by dirt road to river; dirt road entrance to Aleman-Tuxtepec road is ca. 2.4 roadmiles W of divergence of roads to Ciudad Aleman and Cosamaloapan