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

A new species, Hyalella tepehuana sp. nov., is described from Durango state, Mexico, a region where studies on Hyalella have been few. This species differs from most species of the North and South American genus Hyalella in the number of setae on the inner plate of maxilla 1 and maxilla 2, characters it shares with Hyalella faxoni Stebbing, 1903. Nevertheless, H. faxoni, from the Volcan Barva in Costa Rica, lacks a dorsal process on pereionites 1 and 2. Also, this new species differs from other described Hyalella species in Mexico by the shape of the palp on maxilla 1, the number of setae on the uropods, and the shape of the telson

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

Marrón-Becerra, Aurora, Hermoso-Salazar, Margarita, Solís-Weiss, Vivianne (2014): Hyalella cenotensis, a new species of Hyalellidae (Crustacea: Amphipoda) from the Yucatán Peninsula, Mexico. Zootaxa 3811 (2): 262-270, DOI: 10.11646/zootaxa.3811.2.

FIGURE 1 in Hyalella cenotensis, a new species of Hyalellidae (Crustacea: Amphipoda) from the Yucatán Peninsula, Mexico

FIGURE 1. Hyalella cenotensis, holotype, female, 5.3 mm. UL, upper lip; LL, lower lip; LMd, left mandible; RMd, right mandible; LaM, lacinia mobilis; Mx1–2, maxilla 1–2; Mxp, maxilliped; A1–2, antenna 1–2. Scale bars = 100 microns