Megalopta sulciventris Friese 1926
- Dataset
- Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Insecta
- order
- Hymenoptera
- family
- Halictidae
- genus
- Megalopta
- species
- Megalopta sulciventris
description
(Figures 1 D, 6 C, 8 D, 14 C)
description
Description Female. (1) Mandible bidentate and with supplementary teeth. (2) Labral elevation with lateral surface slightly raised in relation to central portion. (3) Clypeus with the surface between punctures on basal and central area smooth. (4) Central portion of supraclypeal area with sparse punctation, punctures separated by ≥ 1 pd. (5) Antennae reddish brown. (6) Upper frons conspicuously convex, strongly declivous toward sulcus around median ocellus. (7) Ocellocular distance smaller than the F 1 length. (8) Mesoscutum adjacent to parapsidial line densely punctured, punctures contiguous, punctation becoming sparser towards mesoscutal lip (<1 pd). (9) Scutellum with posterior margin raised in relation to anterior margin of metanotum. (10) Metanotum with integument, in oblique view, hidden by short plumose pilosity only in two-thirds of disc (Figure 1 D). (11) Basal area of metapostnotum sometimes metallic green; its length at least 0.7 × that of metanotum; with imbricated longitudinal rugulosities weakly impressed (Figure 1 D). (12) Mesepisternum with contiguous punctation. (13) Metepisternum with sparse pilosity, integument visible through pilosity, posterior upper margin modified into a conspicuously large process covered with velvety pilosity, its diameter at least 0.5 × tegula length. (14) T 1 with dorsal surface of disc densely punctured (<1 pd), posterior marginal zone smooth between punctures. Male. (15) Scape with diameter gradually enlarging toward the apex. (16) Flagellum reddish brown; F 1 – F 11 not differing in diameter; F 2 about as long as F 3; F 6 – F 11, in anterior view, with the anterior and posterior margins depressed; in posterior view with basal glabrous area elevated in relation to remaining surface (Figure 8 D). (17) Metanotum with integument, in dorsal view, not hidden by short plumose pilosity (Figure 6 C). (18) Basal area of metapostnotum variable, reddish brown with green metallic tints or entirely metallic green; its length half of that of metanotum; with longer longitudinal rugulosities medially, rugulosities shorter laterally (Figure 6 C). (19) Metepisternum as in the female. (20) 1 st and 2 nd tarsomeres of foreleg with longest simple setae longer than summed length of three apical tarsomeres. (21) S 3 with longitudinal sulcus, posterolateral margin notched. (22) S 4 with medial protruding process, profile of process triangular in lateral view; basal portion glabrous; posterolateral margin notched, notch not extending to basal half of sclerite. Measurements Approximate body length: (10.2 – 14.3); maximum width of head: (3.4 – 4.4); intertegular distance: (3.5 – 4.2); length of forewing with the tegula: (10.8 – 11.8).
diagnosis
Diagnosis The amoena species group includes M. amoena, M. chaperi, M. guimaraesi and M. mura sp. n. Its species can be recognized by the following characters: posterior upper margin of metepisternum modified into a conspicuously large process covered with velvety pilosity, its diameter at least 0.75 × the tegula length (except in the female of M. amoena); male E 3 centrally in the apex with sinuous notch adjacent to expanded area of sternum (Figure 8 A ‒ C). M. amoena is widely distributed (Figure 14 D), M. chaperi is restricted to north of the Amazonas and Negro rivers (Figure 15 A), M. guimaraesi to the Atlantic Forest and Cerrado and M. mura sp. n. to north-western South America (Figure 15 B).
diagnosis
Diagnosis The female differs from that of M. nitidicollis by the weakly impressed longitudinal rugulosities along entire basal area of metapostnotum (Figure 1 D); from M. aeneicollis by the metallic green basal area of metapostnotum and by its imbricated longitudinal rugulosities towards lateral portions (Figure 1 D); from M. aegis by the metanotum sometimes with pilosity short and plumose, present only on two-thirds of disc, not obscuring the integument in oblique view (Figure 1 D) and basal area of metapostnotum metallic green and with strongly imbricated longitudinal rugulosities (Figure 1 D). The male differ from those of M. aegis, M. aeneicollis and M. nitidicollis by the glabrous basal portion of F 6 – F 11 raised in relation to remainder of flagellomere surface (Figure 8 D); metanotum pilosity present only in two-thirds of disc and not obscuring the integument in dorsal view (Figure 6 C); basal area of metapostnotum entirely metallic green or sometimes reddish brown medially (Figure 6 C).
distribution
Distribution BRAZIL. Amapá: Pedra Branca do Amapari, Ferreira Gomes, Serra do Navio. Amazonas: Barcelos, Beruri, Ipixuna, Manaus, Presidente Figueiredo. Pará: Altamira, Belém, Oriximiná. Roraima: Amajari. FRENCH GUIANA. Saint- Laurent-du-Maroni: Saint-Laurent-du-Maroni. SURINAME. Brokopondo: Sarakreek. Nickeri: Wageningen. Sipaliwini: Coeroeni, Coppename, Kabalebo, Sarakreek (Figure 14 C). The amoena species group
materials_examined
Additional examined material (93 ♀, 14 ♂). See Appendix 2.
Name
- Homonyms
- Megalopta sulciventris Friese 1926