Description of three new species of Hyalella Smith, 1874 (Crustacea: Amphipoda) from Southeast Mexico.

Lacandona tropical rainforest is an area with an important hydrological and biological role in Mexico, nevertheless there are few studies about freshwater macrofauna. In this study, we described three new species collected in three different water bodies in the Lacandona tropical rainforest: H. parva from lake Nahá with a minute body size without mucronations on pleonites 1-2, H.

A new species of the genus (Crustacea, Amphipoda) from northern Mexico.

A new species, , is described from Durango state, Mexico, a region where studies on have been few. This species differs from most species of the North and South American genus in the number of setae on the inner plate of maxilla 1 and maxilla 2, characters it shares with Stebbing, 1903. Nevertheless, , from the Volcan Barva in Costa Rica, lacks a dorsal process on pereionites 1 and 2.

Hyalella cenotensis, a new species of Hyalellidae (Crustacea: Amphipoda) from the Yucatán Peninsula, Mexico.

In this study the first blind species of Hyalella for Mexico is described; it is the second in the genus to be recorded there. The new species is closer to the eyeless species: H. anophthalma Ruffo, 1957, H.