Alpheus lottini Guérin-Méneville, 1829

Material examined. This species was found at all sampled sites. Vouchers were collected from the Islas Marietas with two males (ICMyL MAZ 9028A) and two females (ICMyL MAZ 9028B); as well at Estacahuite, close to the Huatulco region, with one male (ICMyL MAZ 9037A) and five females (ICMyL MAZ 9037B).

Remarks. This species is commensal on pocilloporid corals and has a wide distribution along the Pacific Ocean and Red Sea (Wicksten & Hendrickx 2003). In Mexican waters, A. lottini was noticed as far north as Isla Coronados (26°06´N, 111°16´W) in the Loreto area on Pocillopora corals (Hernández et al. 2009), in Bahía Santiago, and in the Huatulco region (Hermoso, 1999). In our study, the species was recorded from all sampled sites along the Mexican tropical Pacific coast.