Abstract
The termite genus Coptotermes is both large and widespread but, as a whole, lacks robust diagnostic characters for morphological species identification. This has resulted in many taxonomic synonymies leading to the current pool of extant species a few of which are among the world’s most destructive pests of wood. The New World diversity of Coptotermes is far less complicated, but has not been the subject of critical study. Using a large collection representative of endemic Coptotermes from the region, we compared their external morphology and their 16S genetic marker sequences to identify the three described American species: C. crassus, C. niger, and C. testaceus. We found no consistent differences among populations from Mexico to Bolivia, and therefore, we reassign the former two species as junior synonyms of C. testaceus. We also compared alates and soldiers of the three non-native species of Coptotermes: C. formosanus, C. gestroi, and C. sjostedti (soldiers only) to C. testaceus and provide diagnostic characters to identify all four current New World species. An updated distribution map is provided.
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