1.
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Metacystis borrori n. sp (Ciliophora : Metacystidae) on the Seagrass Thalassia testudinum Aladro Lubel, María Antonieta - Martínez Murillo, ME
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2.
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A new species of Pseudoeurycea (Caudata: Plethodontidae) from Northern Oaxaca, Mexico. Canseco-Marquez, L. - Parra-Olea, G.
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3.
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Three new species and new distributional records of Discogastrini from Central and South America (Hemiptera: Heteroptera: Coreidae : Coreinae). Brailovsky, H. - Barrera, E.
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4.
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A further contribution to the systematics of the tribe Colpurini (Heteroptera: Coreidae: Coreinae). Brailovsky, H.
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5.
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The rectification of the type species of Acolhua distant with the description of a new species (Heteroptera: Rhyparochromidae). Slater, J. A. - Brailovsky, H.
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6.
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A new species of Spauligodon (Nemata: Oxyuridae) parasite of Cnemidophorus (Lacertilia: Teiidae) from Southern Mexico. Jimenez-Ruiz, F. A. - Leon-Regagnon, V. - Campbell, J. A.
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7.
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Rhabdochona ahuehuellensis n. sp. (Nematoda: Rhabdochonidae) from the Balsas goodeid, Ilyodon whitei (Osteichthyes: Gooedeidae), in Mexico. Mejia-Madrid, H. - Perez-Ponce de Leon, G.
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8.
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Two new species of freshwater crabs of the genus Tehuana (Brachyura: Pseudothelphusidae) from southern Mexico. Villalobos, J. L. - Alvarez, F.
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9.
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Cystoopsis atractostei sp. n. (Nematoda: Cystoopsidae) from the subcutaneous tissue of the tropical gar, Atractosteus tropicus (Pisces), in Mexico. Moravec, F. - Salgado-Maldonado, G.
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10.
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Herrera's sulfocyanic theory on the origin of life: a critical reappraisal Perezgasga, L - Silva, E - Lazcano Araujo Reyes, Antonio Eusebio - Negrón Mendoza, A
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