14 October 1982.
México, Mexico
Locality: Along Hwy 55, between Tenango and Tenancingo, 2 km S of Tenango. About 0.5 km from the road.
Coordinates: 19.0083, -99.7850
(Map it)
Elevation: 2650m.
Environment description: Along an arroyo among the tall grasses under tejocote, pine and Abies, in organic leaf litter.