Seven new species of Lasioglossum (Dialictus) Robertson, 1902 (Hymenoptera: Halictidae: Halictini) from the Yucatán Peninsula, Mexico Author Landaverde-González, Patricia CFEE1568-9AD9-4531-885D-EBF3F68ABB43 General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120 Halle (Saale), Germany. patricia.landaverde@zoologie.uni-halle.de Author Gardner, Joel AA15FE6E-921A-46D6-BC67-88E067F283D9 Department of Entomology, University of Manitoba, 12 Dafoe Rd., Winnipeg, Manitoba, R 3 T 2 N 2, Canada. clickbeetle3364@gmail.com Author Moo-Valle, Humberto 35656D9E-491C-4C34-8CAD-069E4B9F0E9B Departamento de Apicultura Tropical, Campus Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, Mérida, Mexico. moovalle@correo.uady.mx Author Quezada-Euán, José Javier G. BD9DBC7E-AD59-47BA-BA72-4A881A31E320 Departamento de Apicultura Tropical, Campus Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, Mérida, Mexico. javier.quezada@correo.uady.mx Author Ayala, Ricardo B1CFBA3B-C28B-40C5-B674-CBC8DB69418C Estación de Biología Chamela, Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Apartado Postal 21, San Patricio Jalisco, 48980, Mexico. rayala@ib.unam.mx Author Husemann, Martin D31A05CA-DCD8-4CFB-A9D0-E9F070EC4707 Centrum für Naturkunde, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany. martin.husemann@uni-hamburg.de text European Journal of Taxonomy 2023 2023-03-22 862 1 1 65 http://dx.doi.org/10.5852/ejt.2023.862.2079 journal article 264116 10.5852/ejt.2023.862.2079 957e3c13-6dd3-4b13-9576-9f013a4990bc 2118-9773 7767855 5D38246E-B144-434C-A2FE-C303381B0CD7 Lasioglossum ( Dialictus ) deceptor ( Ellis, 1914 ) Fig. 33A Halictus ( Chloralictus ) deceptor Ellis, 1914: 101 ( holotype , ♀ , USNM ENT00535076). Dialictus deceptor – Moure & Hurd 1987: 99 (catalogue). Type material Holotype GUATEMALA – Izabal • 1 ♀ ; Quirigua ; [ 15.27° N , 89.04° W ]; Feb.–Mar. 1912 ; W.P. Cockerell leg.; USNM ENT00535076 . Other material examined MEXICO – Yucatán • 1 ♂ ; Alfonso Caso , 10 km W of Tzucacab ; [ 20.08° N , 89.15° W ]; 12 Feb. 1987 ; Charles D. Michener leg.; ex Viguiera dentata ; SEMC . Remarks Rare on the Yucatán Peninsula. The identification of this species is somewhat uncertain because only a single male was discovered in the Yucatán Peninsula, while the holotype is a female. The specimen analysed is believed to be L. deceptor and not the male of L. tropicior based on the relatively long face and moderately dense mesoscutum punctures (i = 1–2 pd), which agree more closely with the holotype of L. deceptor than with L. tropicior . Furthermore, both these species were described from the same type locality, so it is assumed that if one occurs on the Yucatán Peninsula, the other is also likely to occur there.