Descriptions of New Species of Chespirito Ferreira, Keller & Branham (Coleoptera: Lampyridae: Chespiritoinae) and the First Record for the Subfamily in the United States Author Ferreira, Vinicius S. 0000-0001-8748-0358 Natural History Museum of Denmark, Zoological Museum, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark. vinicius. sfb @ gmail. com; https: // orcid. org / 0000 - 0001 - 8748 - 0358 vinicius.sfb@gmail.com Author Keller, Oliver 0000-0001-5067-3316 Florida State Collection of Arthropods, Florida Department of Agriculture and Consumer Services, P. O. Box 147100, Gainesville, FL 32614, USA. okeller 1977 @ gmail. com; https: // orcid. org / 0000 - 0001 - 5067 - 3316 okeller1977@gmail.com Author Ivie, Michael A. 0000-0003-0996-2946 Montana Entomology Collection, Marsh Labs, Montana State University, Room 5, 1911 W. Lincoln Street, Bozeman, MT 59717, USA. mivie @ montana. edu; https: // orcid. org / 0000 - 0003 - 0996 - 2946 mivie@montana.edu text Zootaxa 2022 2022-04-01 5124 2 230 237 journal article 53152 10.11646/zootaxa.5124.2.8 17c77dbf-628e-443e-a647-7d095f06d529 1175-5326 6405132 6DEA7DA6-0B3E-47A4-B8E9-87FB0D2FF730 Chespirito costae new species ( Figs. 1B, 1E, 1H , 2B , 3B , 4 ) urn:lsid:zoobank.org:act: AB3256F6-C0C1-4007-B287-75D58751751D Type material (1). Holotype : Cuernavaca ; Mor. , Mex / VIII-6-1938 ; L. J. Lipovksy ( SEMC ). Etymology. The species is named after Professor Cleide Costa, VSF’s MSc advisor and colleague of MAI, in recognition of her many contributions to the study of immature Coleoptera , including fireflies and other bioluminescent beetles. Diagnosis. Chespirito costae is morphologically similar to Chespirito milleri herein described, being easily separated from it by possessing the last tergite entire, apically round ( Fig. 1H ) (vs. posteriorly notched in C . milleri ), the elytra insertion entirely black ( Fig. 1B ) (vs. yellow in C . milleri ) and by the shape of the male genitalia ( Fig. 3B ). Description. General color dark brown ( Figs. 1B ), mandibles and last three abdominal segments yellow ( Figs. 1E, 1H ). Head as long as wide, posterior 2/3 covered by pronotum ( Fig. 1B ). Antennae when extended posteriorly reaching apical third of elytra ( Fig. 1B ). Pronotum not constricted medially; anterior angles round; posterior margin bisinuate ( Fig. 1B ); median longitudinal carina strongly visible throughout ( Fig. 1B ). Elytra ca. 3.2× length of pronotum; weakly dehiscent; basally subparallel ( Fig. 1B ); with two weakly developed elytral costae ( Fig. 1B ). Scutellar shield posteriorly round ( Fig. 1B ). Abdomen with tergite VIII entire, apically round ( Fig. 1H ); ventrite 7 with shallow notch posteriorly ( Fig. 1E ); ventrite 8 elongate, fusiform, longer than wide, entire, not notched apically ( Fig. 1E ). Male genitalia with median lobe stout, fusiform, apically fan-shaped, round, in ventral view bearing paired strut-like structure, divergent apically ( Fig. 3B ); parameres bulb-shaped, apically round ( Fig. 3B ), 1/5 shorter than median lobe; phallobase small, longer than wide, posteriorly rounded ( Fig. 3B ). Length (exposed portion of head+pronotum+elytra). 2.61 mm . Width (across humerus): 0.7 mm . Distribution. Morelo state, Mexico ( Fig. 4 ).