Isodrusus Sharp, 1911 (figures 17, 18)

Of the three described species, only one is recorded from Mexico, the other two are endemic to the West Indies (Howden 1963, 1970). Notes about habits and distribution are in Howden (1963). There is an undescribed species from Oaxaca, Mexico (Cortés-Hernández & Anderson, in prep.)

Isodrusus debilis Sharp, 1911 .