2009:
Queretaro
Hidalgo
Sonora
Guerrero

2008:
New Mexico
Arizona
Michoacan, Guerrero
Texas, New Mexico
California
Arizona, New Mexico
Baja California peninsula/islands
Arizona California New Mexico
Mississippi Louisiana
Arizona Nevada
Guerrero
Colima

2007:
Arizona New Mexico
Arizona
Arizona California New Mexico
Nevada
New Mexico Texas
Jalisco
Arizona Utah
Arizona New Mexico Texas
Morelos Guanajuato
Oaxaca Guerrero
Guerrero
Utah
Michoacan

2006:
Chiapas
California Nevada
Nuevo Leon San Luis Potosi Tamaulipas
Coahuila
Chihuahua Sonora
Oaxaca
Arizona New Mexico
Pacific Coast of Mexico
Veracruz
San Luis Potosí, Hidalgo, Querétaro
Michoacan, Guanajuato

2005:
Oaxaca
Pueblo, Oaxaca
California, Nevada
Veracruz, Chiapas
Durango, Chihuahua
México, Nayarit, Jalisco, Colima
Michoacan, Aguascalientes, Zacatecas, Jalisco, Colima
Sonora,Baja California, Baja California Sur
Chiapas (II)
Chiapas (I)

2004:
Puebla, Oaxaca, Chiapas, Tabasco
Tamaulipas, San Luis Potosí, Veracruz, Puebla, Oaxaca
southern California
Baja California Sur
Arizona, New México, Baja California, Baja California Sur

2002:
Arizona, New México
D.F., Puebla, Veracruz, Oaxaca, Edo. México, San Luis Potosí, Tamaulipas, Hidalgo

Mexico (Morelos, Guanajuato) 2007

1–3 July, 2007: Funded by a Theodore Roosevelt Grant from the AMNH. Ph.D. student Edmundo González and volunteer Ofelia Delgado traveled from the Distrito Federal towards Morelos state, through the Derrame del Chichinautzin mountain range, covered by secondary forest and some areas of primary pine-oak forest, in search of a new Vaejovis species in the mexicanus group. They failed to find the species, and instead collected Vaejovis mexicanus smithi and a new species in the eusthenura group. In a second short trip, González and Delgado traveled to Cuerámaro, Guanajuato, an area dominated by ‘Bajio type’ vegetation, comprising Acacia and thorn bushes, where they collected an undescribed solifuge species.