A synopsis of the Endomychidae (Coleoptera: Cucujoidea) of México Author Arriaga-Varela, Emmanuel Author Tomaszewska, Wioletta Author Navarrete-Heredia, José Luis text Zootaxa 2007 1594 1 38 journal article 10.5281/zenodo.178655 dfb3d938-27f1-423a-b49e-8d06bf06a9cc 1175-5326 178655 Bystus Guérin-Méneville, 1857 : 270 . Type species: Bystus coccinelloides Guérin-Méneville, 1857 . Rhymbus Gerstaecker, 1858 : 347 . This is a tropical genus distributed in the western hemisphere. In México species of Bystus are known from the Gulf and Southeastern areas and have been collected from rotting logs and logs infested by hard bracket fungi. Hoffman et al . (2004) mentioned the occurrence of an unidentified species (as Rhymbus ) in a cave from Yucatan Peninsula. Leschen & Carlton (1993) described B. decorator from Perú , detailing an interesting behavior of larvae which cloak themselves with debris collected from the surrounding microhabitat, probably for protection from predators. Four species recorded from México . 2. B. apicalis ( Gerstaecker, 1858 ) . Rhymbus apicalis Gerstaecker, 1858 : 350 ; Gorham 1890: 143; Blackwelder 1945 : 440 . Bystus apicalis : Strohecker 1953 : 21 . Type locality: Colombia Type material: syntypes in MNHUB , BMNH Distribution: México (without specific records on the distribution), Guatemala , Colombia . FIGURES 1–2 . 1, Map showing Mexican states where endomychid species are recorded and the abbreviations used in the text: BCS: Baja California Sur; CAMP: Campeche; COL: Colima; CHIH: Chihuahua; CHIS: Chiapas; DF: Distrito Federal; DGO: Durango; GRO: Guerrero; HGO: Hidalgo; JAL: Jalisco; MEX: Estado de México; MICH: Michoacán; MOR: Morelos; NAY: Nayarit; OAX: Oaxaca; PUE: Puebla; QRO: Querétaro; QROO: Quintana Roo; SLP: San Luis Potosí; SIN: Sinaloa; SON: Sonora; TAB: Tabasco; TAMPS: Tamaulipas; VER: Veracruz; YUC: Yucatán. 2, Map showing the number of Endomychidae species recorded for each Mexican state including dubious records. 3. B. fibulatus (Gorham, 1890) . Rhymbus fibulatus Gorham, 1890: 144 ; Blackwelder 1945 : 440 . Bystus fibulatus : Strohecker 1953 : 21 . Type locality: México : VER , Túxpan Type material: syntypes in BMNH . Distribution: México : VER . 4. B. hemisphaericus ( Gerstaecker, 1858 ) . Rhymbus hemisphaericus Gerstaecker, 1858 : 349 ; Gorham 1890: 143; Blackwelder 1945 : 440 . Bystus hemisphaericus : Strohecker 1953 : 21 . Type locality: Costa Rica . Type material: holotype in MNHUB Distribution: México : VER , GRO ; Belize , Guatemala , Costa Rica , Panamá . 5. B. limbatus (Gorham, 1873) . Figs 3 , 15 . Rhymbus limbatus Gorham, 1873: 63 ; Gorham 1890: 142; Blackwelder 1945 : 440 ; Strohecker 1953 : 22 .