The aim of this study was to evaluate the development of young Swietenia macrophylla plants grown in Yellow Oxisol submitted to different liming and boron doses. Experimental design was completely randomized in factorial arrangement (|4x4|+1), with additional treatment (control), being…

Field exploration and floristic research have revealed another plant species endemic to the peninsula of Baja California, Mexico. A new shrubby species (Amyris certerae)from the Sierra Guadalupe and Sierra de la Giganta, Baja California Sur, is described here. Distribution, associated…

Six new species of Amnestus Dallas from the Mexican states of Campeche, Chiapas, Hidalgo, and Veracruz are described. Illustrations of adults and diagnostic characters of the head, prosternal carina, pronotum, legs, parameres, and methatoracic scent gland are provided. Distribution and…

Eysenhardtia officinalis (Leguminosae, Papilionoideae), a new species from Mexico, is described and illustrated. This species appears similar to E. polystachya (Ortega) Sargent and E. texana Scheele, but differs in the number and morphology of the leaflets, the longer inflorescences, the…

Caballerolecythus ibunami n. gen., n. sp. is described from the intestine of 2 species of rodents (Liomys irroratus [Gray, 1868] and Peromyscus difficilis [Allen, 1891]) from Piñonal, El Carmen Tequexquitla, Tlaxcala state, Mexico. These specimens represent a new genus and…

Gnathostoma lamothei n. sp., inhabiting the stomach of Procyon lotor hernandezii Wagler, 1831, in Tlacotalpan, Veracruz State, and Rio Sapo, Oaxaca, Mexico, is described. This new species differs from all other congeners by having the posterior half of the body…

Hysterothylacium perezi; n. sp. is described from the intestine of the "cuatete" Ariopsis guatemalensis Giinther, 1864 (Osteichthyes: Ariidae),in Tres Palos,a coastal lagoon located in the Mexican Pacific basin.The new species differs from all other species of Hysterothylacium Wardand Magath ,…

During January 2002, 3 specimens of an undescribed species of Oochoristica Lühe, 1898, were collected in Ctenosaura pectinata (Wiegmann, 1834) from Santa Mará Mixtequilla, Oaxaca, Mexico. Oochoristica leonregagnonae n. sp. differs from 71 of 82 species of the genus by…

A new monotypic arboreal and dioecious genus, endemic to Mexico, is described and illustrated: Heteroflorum, within the Leguminosae, Caesalpinioideae, Caesalpinieae, Peltophorum species group, including the new species H. sclerocarpum from the Balsas River basin and the Mexican coastal plains of…

Three new species of the genus Typhlatya from anchialine caves in Mexico (T. dzilamensis), the Bahamas (T. kakuki), and Honduras (T. utilaensis) are described. Typhlatya dzilamensis is the fourth species to be described from the Yucatan Peninsula, Mexico, and is…