INFUSCATUS AND DISPAR GROUPS OF SPIDER GENUS PHILODROMUS IN NORTH AND CENTRAL AMERICA AND WEST INDIES (ARANEIDA - THOMISIDAE)

The infuscatus group comprises 20 species and 2 subspecies. The group is wholly American, the main habitats occurring in the dry parts of the U.SA. and Mexico. Only Philodromus infuscatus Keyserling reaches Canada, while a few species are neotropical. P. droseroides Schick is divided into P. d. droseroides of California and P. d. arizonensis ssp. n. of Arizona. Similarly P. infuscatus is divided into P. i. infuscatus of eastern U.S.A. and P. i. utus Chamberlin of western U.S.A. The following are described as new species: P. pratarioidesP. harrietaeP. mississippianusP. separatusP. tortusP. probolusP. infectusP. longiductusP. breviductusP. pseudanomalusP. mexicanus, and P. cavatus. P. dispar Walckenaer, a species introduced from the Old World, is the sole American representative of the dispar group. © 1969, Entomological Society of Canada. All rights reserved.