New geographical records of Mesembrinellidae (Diptera: Oestroidea) in Mexico Author Jaume-Schinkel, Santiago text Revista Chilena de Entomología 2021 Rev. Chil. Entomol. 2021-12-10 47 4 741 746 http://dx.doi.org/10.35249/rche.47.4.21.11 journal article 10.35249/rche.47.4.21.11 0718-8994 13206965 FA442FFE-D24F-4CE7-B18F-5F6ED6B Mesembrinella socors ( Walker, 1861 ) ( Fig. 1B ) Calliphora socors Walker 1861: 311 . Distribution. Brazil , Colombia , Costa Rica , Ecuador , Guatemala , Mexico , Nicaragua , Panama . Mexico (no exact locality is known for the type , see Whitworth & Yusseff-Vanegas 2019 ). This is the first record for Chiapas . Material examined. 3 males , 3 females , Mexico , Chiapas , Ocosingo , Reserva Montes Azules. 28-IV-1986 - 5-V-1986 . col. F. Arias , R. Barba, L . Cervantes [ CNCI ] . All species present in Mexico are restricted to the central-south part of the country according to James (1970) , M. bicolor is present in Nayarit at approximately 21° N being the northernmost record of this Neotropical family. All species can be properly identified using the keys provided by Whitworth & Yusseff-Vanegas (2019) .