Austrolimnius (Telmatelmis) formosus (Sharp)

Arce-Pérez, Roberto & Reynoso-Velasco, Daniel, 2025, A new species of Austrolimnius Carter & Zeck from east-central Mexico and new state records for species of the genus in the country (Coleoptera: Elmidae), Zootaxa 5633 (3), pp. 541-552 : 548-549

Austrolimnius (Telmatelmis) formosus (Sharp)

( Fig. 7 )

Elmis formosus Sharp 1882: 140 (original description).

Published records by country. Argentina, Belize, Brazil, Costa Rica, Guatemala, Mexico, Nicaragua, Panama, Peru, Venezuela ( Jäch et al. 2016).

Type Locality. San Joaquín , Alta Verapaz, Guatemala .

Published records in Mexico. Chiapas, Colima, Estado de México, Guerrero, Morelos ( Hinton 1940, 1971, 1972; Santiago-Fragoso & Spangler 2000; Luna-Luna et al. 2022).

New state records. Mexico: Michoacán, Tabasco, Veracruz .

Material examined. MEXICO: CHIAPAS: Río Lacanjá, 15-VI-1979, J. Bueno col. (1 undetermined CNIN); Tapachula, Unión Juárez , 31-VII-1985, H. Velasco col. (2♀ CNIN) . MICHOACÁN: Morelos, carr. Apatzingán , charco permanente, 10-IX-1981, E. Mejorada col. (1♀ CNIN) . TABASCO: Mpio. Huimanguillo, arroyo Flores Villa de Gpe., 2ª Sección Los Chimalapas , km 5.92 carr. Malpasito-Carlos A. Madrazo, 2-VII-1998, J. Bueno & R . Barba cols. (1♂, 3♀ CNIN) . VERACRUZ: Fortín de las Flores, Río Metlac , Barranca de Metlac , 02-IV-1988, R . Amador, A. Valerio & A. Palacios (1♀ CNIN); same but 08-I-1989, R . Amador & A. Hernández cols. (1♂ CNIN); same but 05-II-1989, R . Amador & M. Razo cols. (1 undetermined CNIN); same but 07-II-1989, R . Amador & A. Palacios cols. (1♀ CNIN); a 7 km de Coscomatepec, 02-V-1981, P. Rodríguez & S. Santiago cols. (♂ CNIN) .

Distribution in Mexico. This species is distributed in the central and southern parts of the country ( Fig. 7 ). Austrolimnius formosus occurs in three biogeographical provinces forming the Mesoamerican dominion of the Neotropical region in Mexico (as defined by Morrone 2014). The species is present in streams below 2,000 m.a.s.l., with most of its records in the Balsas Basin, Pacific Lowlands, and Veracruzan biogeographical provinces. The localities in Colima, the western and southernmost (below 1,000 meters) parts of Chiapas, and southern Guerrero are in the Pacific Lowlands province. Records in the Balsas Basin province are those from Estado de México, Michoacán, and Morelos. Also, records from central, northern, and eastern Chiapas and those from Tabasco and Veracruz are in the Veracruzan province. Lastly, records from southern Chiapas (above 1,000 m.a.s.l.) are on the border between the Pacific Lowlands and the Chiapas Highlands provinces, and the record from north-central Chiapas is in this latter province.

Figures

FIGURE 7. Distribution of Austrolimnius (Telmatelmis) formosus (Sharp) in Mexico. Inset taken from Hinton 1940.