About Phrynus operculatus Pocock, 1902
Phrynus operculatus Pocock, 1902 is a medium-sized species, with a total body length ranging from 18 to 22 millimeters. Its body is chestnut-colored, with a slight reddish tint on the carapace and pedipalps. The anterior region of the body is moderately narrow, and its front edge is gently bilobed. The basal segment of the chelicerae bears an external tooth. The pedipalp trochanters have four anterior spines. In female individuals of this species, the gonopod sclerite is relatively short; it is wide at the base, with a narrow apex that curves toward the ventral surface.
This species is distributed in Texas (United States) and the Mexican states of Nuevo León, Sinaloa, Nayarit, Jalisco, Guanajuato, Colima, Michoacán, Guerrero, Morelos, Oaxaca, and Chiapas. Due to its broad distribution range, this species appears to have high ecological plasticity. It has been recorded living under stones, under partially detached tree bark, and beneath dry cacti in xerophilous forests.
