Megalopta guimaraesi Santos & Silveira, 2009

Alvarez, Leopoldo Jesús, Ramello, Pablo José, Avalos, Adan Alberto, Almada, Valentín, Aguirre, Marina Soledad, Torretta, Juan Pablo & Lucia, Mariano, 2024, Contributions to the wild bee fauna in Argentina (Hymenoptera: Anthophila), Papéis Avulsos de Zoologia 64, pp. 1-13 : 8

Megalopta guimaraesi Santos & Silveira, 2009 ( Figs. 3F, G and 5 )

Material examined (6♀♀): 1♀, Argentina, Misiones, Parque Nacional Iguazú, Rta. 101, 08/XII/2017, Col. L. Alvarez – P.J. Ramello // Recolectada con vainillin, Sitio 3, (-25°40′32.0″, -54°13′50.8″), dosel 12 m //. 1♀, Argentina, Misiones, Parque Nacional Iguazú, Rta. 101. 08/XII/2017. Col.L.Alvarez– P.J.Ramello// Recolectada con metil salicilato, Sitio 3, (-25°40′32.0″, -54°13′50.8″), dosel 12 m // 2♀♀, Argentina, Misiones, Parque Nacional Iguazú, Rta. 101, 25/I/2018, Col. Alvarez-Almada-Avalos // Recolectada con metil salicilato, Sitio 3, (-25°40′32.0″, -54°13′50.8″), dosel 12 m //. 1♀, Argentina, Misiones, Parque Nacional Iguazú, Rta. 101, 25/I/2018, Col. Alvarez-Almada-Avalos // Recolectada con metil salicilato, Sitio 4, (-25°41′03.0″, -54°12′14.9″), dosel 12 m //. 1♀, Argentina, Misiones, Parque Nacional Iguazú, Rta. 101, 25/I/2018, Col. Alvarez-Almada-Avalos // Recolectada con metil salicilato, Sitio 4, (-25°41′03.0″, -54°12′14.9″), sotobosque 1.5 m //.

Distribution: Brazil (Bahia, Goiás, Maranhão, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraná, Rio de Janeiro, São Paulo) ( Santos & Melo, 2015). Argentina: Misiones. New record.

Remarks: Females of Megalopta guimaraesi are included in the amoena species group by presenting the posterior upper margin of metepisternum modified into a conspicuously large process covered with velvety pilosity and differ from other members of this group by the following combination of characters: basal area of metapostnotum metallic green, the mesoscutum with the dense punctuation adjacent to parapsidial line and sparser in direction to mesoscutal lip, and scutellum with posterior margin leveled to anterior margin of metanotum ( Santos & Silveira, 2009; Santos & Melo, 2015). Megalopta guimaraesi and M. sodalis (Vachal, 1904) are the species with the southernmost distribution of the genus,reaching the Brazilian states of Paraná and Santa Catarina, respectively. All the specimens studied in this work were collected using euglossine traps baited with methyl salicylate or vanillin. This behavior was reported by Knoll & Santos (2012). This is the first record of the genus and species for Argentina.

Figures

Figure 3. (A-C) Habralictus chlorobaptus Mourefemale.(D, E) Ha. flavopictusMoure female.(F,G) Megalopta guimaraesiSantos & Silveira female.(H-J) Neocorynura euadne (Schrottky) female.A,D,F,H =head in frontal view.B = metasomain dorsal view.C,E,G,J =lateral view.i = scutellum and metanotum.Scale bars:1 mm.

Figure 5. Georeferenced new records of bee species for Argentina.The Ecoregions corresponding to each record are presented. Symbols represent localities with more than one new record:Star = Parque Nacional Iguazú;Plus = M.Belgrano;Diamond = Loreto;Triangle = PuebloLiebig.