04 September 1983.
Hidalgo, Mexico
Locality: From Hwy 105, Pachuca to Zacualtipan, 5.5 km along the track towards Huayacocotla.
Coordinates: 20.3833, -98.6667
(Map it)
Elevation: 1950m.
Environment description: Mixed oak-pine forest; level area with dark brown, organic soil.