- Systematic revision of the genus Trichonotuloides Balthasar, 1945 with description of two new Mexican species (Coleoptera: Scarabaeidae: Aphodiinae) (2014)
- Besides the two species at present known belonging to the genus Trichonotuloides Balthasar (T. glyptus (Bates) and T. latecrenatus (Bates)), two new Mexican species, T. alfonsinae and T. hansferyi, are herein described (Coleoptera: Scarabaeidae: Aphodiinae). The complete set of fi gures is supplied for all taxa herein dealt with.
- Oxyomus mariateresae new species of Mexican Aphodiini (Coleoptera: Scarabaeidae: Aphodiinae) (2014)
- The new species Oxyomus mariateresae from Mexico (Oaxaca) is described and figured.
- Systematic revision of the genus Coelotrachelus Schmidt, 1913 (Scarabaeoidea: Scarabaeidae: Aphodiinae) (2009)
- The species belonging to the genus Coelotrachelus Schmidt, 1913 are redescribed and figured. The Mexican Coelotrachelus ixtapalapaensis, new species, is described.