- Pachymerola ruficollis Giesbert, 1987

Paratype: 1 [unknown sex]. MEXICO: Sinaloa, Mazatlán, Mazatlán, 5 mi N Sinaloa, 21/VII/1972. Col. J. & M. A.

Chemsak y A. & M. M. Michelbacher.

Conservation status: Complete, well-preserved.

Paratype: 1 [unknown sex]. Ídem. 31/VII/1972; ex. Buddleia wrightii . Conservation status: Complete, well-preserved.