Centris (Xanthemisia) maya, Vivallo & Vásquez-Lenis & Mérida-Rivas, 2023

Vivallo, Felipe, Vásquez-Lenis, Elder A. & Mérida-Rivas, Jorge A., 2023, New species of Centris (Xanthemisia) Moure from the Mesoamerican Dominion and the Mexican Transition Zone (Hymenoptera: Apidae), Zootaxa 5351 (3), pp. 341-355 : 346

Centris (Xanthemisia) maya sp. nov.

( Figures 9‒12 )

Centris (Xanthemisia) lutea ; Meléndez et al., 2016. 9(2): 732 (Probable identity).

Diagnosis. Female: Integument dark brown to black ( Figs. 9‒12 ). Clypeus strongly coriaceous, with coarse and dense punctation on disc ( Fig. 9 ). T4 with fine and dense punctation on anterior half, scattered towards distal margin ( Fig. 12 ). Pubescence dark brown, except mesoscutum, mesoscutellum, axilla and anterior surface of tegula with intense yellow hairs ( Figs. 9, 10 ). Central area of epistomal suture almost as arched as the central lower margin of clypeus ( Fig. 9 ). Primary basitibial plate elliptical; secondary plate relatively rhomboidal ( Fig. 11 ). Male: Unknown.

Holotype female. Measurements: Approximately body length: 16.7; head width: 5.5; intertegular span: 5.0; forewing length: 11.9; UID: 2.7; LID: 2.4; mandible length: 2.2; mandible basal width: 1.2; labrum length: 0.9; labrum width: 1.4; F1 length: 1.0; F2 length: 0.2; F3 length: 0.3; scape length: 1.0; diameter of median ocellus: 0.3; distance between lateral ocellus and compound eye: 0.7. Coloration: Integument dark brown to black ( Figs. 9, 10 ). Wing membrane and veins dark brown ( Fig. 10 ). Integument and sculpture surface: Clypeus strongly coriaceous, with coarse and dense punctation on disc, sparser near upper margin ( Fig. 9 ). Labrum with coarse, dense and uniform punctation ( Fig. 9 ). Area between lateral ocelli and the compound eye unpunctated. T4 with fine and dense punctation on anterior half, scattered towards distal margin ( Fig. 12 ). Pubescence: Dark brown, except mesoscutum, mesoscutellum, axilla and anterior surface of tegula with intense yellow hairs ( Figs. 9, 10 ). Structures: Mandible with five teeth, the fifth on the inner surface of the mandible ( Fig. 9 ). Apices of first, second and fourth teeth acute, third tooth wider than the others, with broadly rounded apex. Trimmal angle almost straight. Acetabular carina reaching the base of third tooth ( Fig. 9 ). Central area of epistomal suture almost as arched as the central lower margin of clypeus ( Fig. 9 ). Clypeal disc flat (lateral view) ( Fig. 10 ). Vertex above the upper interocular tangent ( Fig. 9 ). Labrum relatively semicircular, wider than long ( Fig. 9 ). Inner orbits of compound eyes converging downward ( Fig. 9 ). Fore elaiospathe with primary anterior comb compact located from the strigilar cavity to the apex of fore basitarsus; secondary anterior comb formed by two giant, long, apically curved hairs. Hairs of hind elaiospathe forming a compact comb. Primary basitibial plate elliptical; secondary plate relatively rhomboidal ( Fig. 11 ). Pygidial plate with preapical lateral constriction and broadly rounded apical margin.

Type material. Holotype female: Mex, QROO Othon P. Blanco 136 m 18.72 N; 89.13 W 29/4/2018 ECOAB.120907 [QR code]\ Centris (Xanthemisia) sp. 03F ♀ det. Sagot 2018 ( ECOAB).

Type locality and distribution. MEXICO: Quintana Roo State: Othón P. Blanco [Nuevo Bécar] (latitude: 18.724; longitude: 89.131; 136 masl) ( Fig. 19 ) .

Etymology. The epithet refers to the Mayan culture that has a large presence in the Yucatán peninsula, as well as in other parts of the State of Quintana Roo where the holotype was collected. This new species is dedicated to them.

Floral record. Unknown.

Comment. Centris maya sp. nov. is similar to C. jakalteka sp. nov. However, they differ by the clypeal surface (strongly coriaceous, with coarse and dense punctation on disc, sparser near upper margin in C. maya sp. nov. ( Fig. 9 ); coriaceous, with coarse and dense punctation at lateral sides; disc shiny with an irregular perpendicular unpunctated area in the middle in C. jakalteka sp. nov. ( Fig. 1 )), by the punctation on T4 (fine and dense on anterior half, scattered towards distal margin in C. maya sp. nov. ( Fig. 12 ); relatively uniform except at distal margin in C. jakalteka sp. nov. ( Fig. 4 )), by the shape of the central area of the epistomal suture in relation to the central lower margin of clypeus (almost equally arched in C. maya sp. nov. ( Fig. 9 ); more arched in C. jakalteka sp. nov. ( Fig. 1 )), and by the morphology of the primary and secondary basitibial plates (primary plate elliptical and secondary relatively rhomboidal in C. maya sp. nov. ( Fig. 11 ); both plates relatively rhomboidal with rounded lateroinferior margins in C. jakalteka sp. nov. ( Fig. 3 )).

Figures

FIGURE 19. Distribution records for the species of Centris (Xanthemisia) inhabiting the Mexican Transition Zone (purple) and the Mesoamerican Dominion (pine green). The Nearctic Region and the Pacific Dominion are indicated in gray and pink, respectively.

FIGURES 9–12. Centris maya sp. nov. (holotype female). Fig. 9. Head, frontal view (scale bar 2 mm). Fig. 10. Habitus, lateral view (scale bar 5 mm). Fig. 11. Basitibial plates (scale bar 0.5 mm). Fig. 12. Metasoma, dorsal view (scale bar 1 mm).

FIGURES 1–4. Centris jakalteka sp. nov. (holotype female). Fig. 1. Head, frontal view (scale bar 2 mm). Fig. 2. Habitus, lateral view (scale bar 5 mm). Fig. 3. Basitibial plates (scale bar 0.5 mm). Fig. 4. Metasoma, dorsal view (scale bar 1 mm).