09 September 1983.
Querétaro, Mexico
Locality: Hwy 120, Cadereyta to Jalpan, about 14 km E along the road to San Joaquin.
Coordinates: 20.9667, -99.6500
(Map it)
Elevation: 2400m.
Environment description: Hilly area on a slight NE slope; open plant community by magueys, cedar and oak; soil black, with stones and rocks.