DNA barcodes for Cladocera and Copepoda from Mexico and Guatemala, highlights and new discoveries Author Elías-Gutiérrez, Manuel El Colegio de la Frontera Sur, Av. Centenario km 5.5, Chetumal 77014, Quintana Roo, México. Author Jerónimo, Fernando Martínez Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN). Apdo. Postal CON- 252, Mexico, D. F. 0640, Mexico. E-mail: fjeroni @ ipn. mx Author Ivanova, Natalia V. Biodiversity Institute of Ontario, University of Guelph, Guelph N 1 G 2 W 1, Ontario, Canada. Author Valdez-Moreno, Martha El Colegio de la Frontera Sur, Av. Centenario km 5.5, Chetumal 77014, Quintana Roo, México. Author Hebert, Paul D. N. Biodiversity Institute of Ontario, University of Guelph, Guelph N 1 G 2 W 1, Ontario, Canada. text Zootaxa 2008 2008-08-01 1839 1 1 42 https://biotaxa.org/Zootaxa/article/view/zootaxa.1839.1.1 journal article 3558 10.11646/zootaxa.1839.1.1 a72fd664-1962-4232-ba28-38a36b167704 1175­5334 5127614 Genus Macrothrix Baird, 1843 Barcoding results demonstrated that M. elegans Sars , a species recently re-instated by Kotov et al. (2004) , is widely distributed from Guatemala to the north of Mexico , but the species dwells far south to Argentina (see Kotov et al. 2004 ). It seems to be common in many ponds and lakes from the tropical regions.