De. Baumgardner et al., NEW AND ADDITIONAL RECORDS OF TEXAS MAYFLIES (INSECTA, EPHEMEROPTERA), Transactions of the American Entomological Society, 123(1-2), 1997, pp. 55-69
One family, three genera, and 18 species of Ephemeroptera are newly re
ported from Texas. Additional county, drainage, and biotic province re
cords are given for another 13 species. This paper brings the total nu
mber of nominal species of mayflies known from Texas to 93. Biogeograp
hical trends and faunal affinities of these new Texas records further
confirm previously published theories that the state can be viewed as
a transitional zone with mayfly populations that have western, eastern
and Neotropical affinities.