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A new species, Vaejovis atenango, belonging to the V. punctipalpi group is described from southern Mexico; this group was previously only known from the North American deserts in the USA and northern Mexico. This geographically discontinuous distribution is similar to…

The new species Pachychernes tamaulipensis is described from all freeliving stages collected in nests of the packrat, Neotoma micropus, in Tamaulipas, Mexico. This species is related to P. shelfordi, P. zehorum, P. attenuatus and P. baileyi; all of them form…

Sciurodendrium bravohollisa e n,sp.(Heligrnone llidae) is described as an intestinal parasite of 2 squirrels. Sciurus aureogaster Cuvier,1829, collected from Los Robles, Municipio de Tlalnepantla, Morelos State, Mexico. The new species differs from all other congeners in possessing a very well…

Two new species of Bauhinia L. (Fabaceae, Caesalpinioideae, Cercideae) are described and illustrated: B. miriamae R. Torres endemic to Oaxaca, and B. wunderlinii R. Torres from Mexico, Belize, and Honduras. Similarities to and differences from B. divaricata L. are discussed…

Oligogonotylus mayae n.sp. is described from the intestine of the Mayan cichlid Cichlasoma urophthalmus (Günther) in Ría Lagartos, Ría Celestún, and Estero Progreso, Yucatán State. This is the second species described for Oligogonotylus Watson, 1976, the other being O.manteri Watson,…

Heteromyoxyuris otomii n. sp., which inhabits the intestinal caecum of Perognathus flavus (Heteromyidae), in Zaragoza, Hidalgo, Mexico, is described. This new species differs from the 2 other congeneric species in the morphology and length of lateral alae in males. Heteromyoxyuris…

The taxonomy of the New World species of the genus Trichadenotecnum is revised. A total of 44 species, including 29 new species, were treated. These species are classified into 12 monophyletic species groups, eight of them newly proposed here. Two…

A new species, Habranthus medinae L. O. Alvarado & GarcíaMendoza (Amaryllidaceae, Hippeastreae), from the state of Puebla, Mexico, is described. The new species is similar to H. tubispathus (L'Héritier) Traub, but can be distinguished by the larger size of the…

A new genus and species of nematode, Caranginema americanum n. gen., n. sp. (Philometridae), are described from gravid, subgravid, and nongravid female specimens collected from the subcutaneous tissue of the fish (crevalle jack) Caranx hippos (Carangidae, Perciformes) from the coral…