Callonychium (Callonychium) petuniae Cure & Wittmann, 1990

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 : 2

Callonychium (Callonychium) petuniae Cure & Wittmann, 1990

( Figs. 1 A-C and 5)

Material examined (3♀♀, 4♂♂): 2♀♀, 1♂, Argentina, Misiones, Rta. 94 (ca. Azara), 28°04′25.1″S, 55°41′19.9″O, 05/XII/2017, S/ Calibrachoa sp. , Col. Alvarez & Ramello. 1♂, Argentina, Entre Ríos, Concordia, 11-III-2020, Col. P. Cavigliasso. 1♀, Argentina, Entre Ríos, Concordia, 18-II-2020, Col. P. Cavigliasso. 2♀♀, Argentina, Entre Ríos, Pueblo Liebig, 14-II-1997, 07-III-1997, Col. L. Caire.

Distribution: Brazil: Paraná, Rio Grande do Sul, Santa Catarina ( Moure, 2007). Argentina: Entre Ríos and Misiones. New records.

Remarks: Males of this species can be easily distinguished from the other species of the genus by the S3 somewhat excavated and with a medial subterminal carina ( Fig. 1B ) and T7 with two ventral projections ( Fig. 1C ) ( Cure & Wittmann, 1990). Callonychium petuniae was reported as an oligolectic bee species on three species of the solanaceous genus Petunia s.l. ( Calibrachoa ovalifolia (Miers) Stehmann & Semir , Calibrachoa excellens (R.E. Fr.) Wijsman , and Petunia integrifolia (Hook.) Schinz & Thell. ) ( Cure & Wittmann, 1990) and reproductive strategies were reported by Wittmann et al. (1990). This is the sixth species of the genus reported in Argentina ( Gonzalez & Engel, 2016).

Figures

Figure 1. (A-D) Callonychium (Callonychium) petuniaeCure &Wittmann male.(E-G) Melitoma danunciae Oliveira & Engel female.(H-J) Gaesischia (Gaesischia) nigra Moure female.A,E, H = head in frontal view.B,G,J = lateral view.B,C = S3 and T7.f = basitial plate.i = metasoma indorsal view.Scale bars:1 mm.