Lasioglossum (Dialictus) tropicior ( Ellis, 1914 )

Landaverde-González, Patricia, Gardner, Joel, Moo-Valle, Humberto, Quezada-Euán, José Javier G., Ayala, Ricardo & Husemann, Martin, 2023, Seven new species of Lasioglossum (Dialictus) Robertson, 1902 (Hymenoptera: Halictidae: Halictini) from the Yucatán Peninsula, Mexico, European Journal of Taxonomy 862 (1), pp. 1-65 : 51

Lasioglossum (Dialictus) tropicior ( Ellis, 1914)

Fig. 24B

Halictus (Chloralictus) tropicior Ellis, 1914: 219 (holotype, ♀, USNM ENT00535200).

Dialictus tropicior – Moure & Hurd 1987: 135 (catalogue).

Type material

Holotype GUATEMALA – Izabal • 1 ♀; Quirigua ; [15.27° N, 89.04° W]; 20 Feb. 1912; W.P. Cockerell leg.; ex Distimake quinquefolius ; USNM ENT00535200 .

Other material examined

MEXICO – Campeche • 1 ♀; Ruinas Edzna; [19.597° N, 90.23° W]; 24 Jun. 1966; University of Kansas Mexico Expedition leg.; SEMC . – Quintana Roo • 1 ♀; 12 km NW of Reforma ; [18.89° N, 88.65° W]; 14 Oct. 1986; Charles D. Michener leg.; SEMC • 1 ♀; 23 km W of Felipe Carrillo Puerto ; [19.58° N, 88.27° W]; 12 Oct. 1986; Charles D. Michener leg.; SEMC .

Remarks

Uncommon on the Yucatán Peninsula (three specimens examined). The specimens closely match images of the holotype and agree with the original description ( Ellis 1914), and the type locality in eastern Guatemala is on the southern edge of the Yucatán Peninsula, but we still consider the identifications somewhat uncertain because of the likelihood that this species (along with L. deceptor , L. flaveriae (Mitchell, 1960) , L. gundlachii (Baker, 1906) , L. liguanense (Sandhouse, 1924) , and possibly L. exiguum and L. umbripenne (Ellis, 1913)) is part of a large and diverse complex including many undescribed species. Morphologically similar specimens which cannot be confidently assigned to a described species are common in other areas of Mexico.

Figures

Fig. 24. Face and clypeus. A. Lasioglossum (Dialictus) exiguum (Smith, 1879), ♀, with clypeus apicolateral margins parallel and forming acute teeth (arrow). B. L. (D.) tropicior (Ellis, 1914), ♀, with clypeus apicolateral margins convergent and forming low rounded knobs (arrow).