Centris (Melanocentris) marinae, Vivallo, 2021

Vivallo, Felipe, 2021, Two new species of oil-collecting bees of Centris (Melanocentris) from Colombia (Hymenoptera: Apidae), Iheringia, Série Zoologia (e 2021019) 111, pp. 1-5 : 3-4

Centris (Melanocentris) marinae sp. nov.

urn:lsid:zoobank.org:act:8A980E1F-967B-4D9D-997B-B1B9DB9CAFC6

( Figs 3, 4 )

Diagnosis. Male: integument and pubescence dark brown, lighter on distal terga and sterna ( Fig. 3 ). Lower paraocular area and clypeal disc yellow ( Fig. 3 ). Mandible curved distally, with three teeth of acute apex. Shortest distance between lateral ocellus and compound eye less than half of the diameter of that ocellus ( Fig. 3 ). F1 slightly shorter than F2+F3+F4 ( Fig. 3 ). Female: unknown.

Description. Male. Measurements (mm): approximate total length: 22.5; head with: 8.7; UID: 2.0; LID: 3.6; mandibular length: 3.2; F1 length: 1.8. Coloration: integument dark brown, almost blackish ( Figs 3, 4 ). Lower paraocular area and clypeal disc yellow ( Fig. 3 ). S5, S6 and T5-T7 light brown ( Fig. 4 ). Wing membranes dark brown with violet/ greenish iridescence ( Fig. 4 ). Integument and sculpture surface: clypeus with coarse and relatively dense punctation, scattered on disc ( Fig. 3 ). Surface near the epistomal suture with finer and denser punctures. Labrum with coarse and fine punctures intermixed, denser than on clypeal disc ( Fig. 3 ). Basal margin with sparser punctation than on the rest of labrum ( Fig. 3 ). Terga and sterna with narrow smooth distal margin. Terga with fine and very dense punctation, sparser on lateral sides of T1 and coarser and sparser on light brown distal segments. Pubescence: dark brown, darker on hind legs and lighter, almost yellowish brown on distal terga and sterna ( Figs 3, 4 ). Discs of T2 and T3 with some yellow, long and simple hairs intermixed, almost forming a transversal line on distal half of T3 ( Fig. 4 ). Structures: mandible curved distally, with three teeth of acute apex ( Fig. 3 ). Maxillary palpus with four palpomeres.Acetabular carina reaching the base of the third tooth ( Fig. 3 ). Trimmal angle acute, almost straight. Central area of lower margin of clypeus relatively straight ( Fig. 4 ). Labrum slightly triangular with rounded lateral margins ( Fig. 3 ). Shortest distance between clypeus and compound eye less than basal width of F1 ( Fig. 3 ). Central area of epistomal suture relatively straight ( Fig. 3 ). Inner orbits of compound eyes converging above ( Fig. 3 ). Vertex below the upper interocular tangent ( Fig. 3 ). Shortest distance between lateral ocellus and compound eye less than half of the diameter of that ocellus ( Fig. 3 ). F1 slightly shorter than F2+F3+F4 ( Fig. 3 ).

Type material. Holotype male with the following information: [white label, printed] COLOMBIA: Dept. Magdalena Valledupar [printed] VI-4-7- [handwritten] 1968 [printed]\ [white label, printed] Borys Malkin Collector ( MNRJ)†.

Type locality and distribution. COLOMBIA, C é sar: Valledupar ( Fig. 5 ) .

Etymology. This species is dedicated to Mrs. Marina Carvajal.

Comments. This species is only known from the male holotype. Despite the information contained in the label referring to the Department where this new species was collected (Magdalena), Valledupar corresponds to the capital of the César Department, which was created from Magdalena one year before the specimen studied was collected .

Two new species of oil-collecting bees of Centris (Melanocentris) ... V

This new species is similar to C. obsoleta Lepeletier, 1841 . However, they differ by the distance between the lateral ocellus and the inner orbit of the compound eye (approximately equal to the diameter of the ocellus in C. obsoleta ; less than half of the diameter of the ocellus in C. marinae sp. nov.), as well as by the coloration of the pubescence of the mesosoma (yellow and dark brown or blackish in C. obsoleta ; completely dark brown in C. marinae sp. nov.).

Figures

Figs 3, 4. Centris (Melanocentris) marinae sp. nov., holotype male: 1, frontal view (scale bar 2 mm); 2, habitus, lateral view (scale bar 5 mm).

Fig. 5. Distribution records of Centris (Melanocentris) germani sp. nov. and C. (Melanocentris) marinae sp. nov.