Revista de Biología Tropical (Dec 2001)
Inquilines of Brachymenes dyscherus nests with special reference to Monobia schrottkyi (Hymenoptera, Vespidae, Sphecidae)
Abstract
Sixty-four inactive nests of the solitary mud-daubing wasp Brachymenes dyscherus, reused by 5 inquiline species, were collected at Fazenda Santa Carlota, Cajuru, São Paulo, Brazil in 1995 and 1996. Monobia schrottkyi used 52 nests; among the 717 cells available for use, 502 were reused. The number of cells per nest varied from 3 to 24; 1 to 16 individuals emerged from September to April (154 males and 112 females). Forty-six cells were parasitized by Melittobia sp. (n = 44) and Ichneumonidae (n = 2). Monobia curvata used 3 nests; among the 50 cells available for use, 38 were reused and 15 males and 8 females emerged from August to November. Three cells were parasitized by Ichneumonidae. Montezumia petiolata occupied 1 nest; among the 8 available cells, 7 were reused and 2 males and 3 females emerged in September. Podium denticulatum used 2 nests; the 20 cells available for use were reused and 11 males and 4 females emerged in August. Trypoxylon rogenhoferi used 5 nests that had 65 available cells; 48 of them were reused, from which 19 males and 11 females emerged from September to November. Three cells were parasitized by Ichneumonidae (n = 2) and Chrysididae (n = 1)Se recolectaron 64 nidos inactivos de la avispa unta-dora de barro solitaria Brachymenes dyscherus reusados por 5 especies inquilinas en Fazenda Santa Carlota, Caju-ra, São Paulo, Brasil en 1995 y 1996. Monobia schrottkyi usó 52 nidos; entre las 717 celdas disponibles, 502 fueron reusados. El número de celdas por nido varió de 3 a 24; de 1 a 16 individuos emergieron desde setiembre hasta abril (154 machos y 112 hembras). Cuarenta y seis celdas fue-ron parasitadas por Melittobia sp. (n = 44) e Ichneumoni-dae (n = 2). Monobia curvata usó 3 nidos; entre las 50 cel-das disponibles, 38 fueron reusadas y 15 machos y 8 hembras emergieron desde agosto hasta noviembre. Tres celdas fueron parasitadas por Ichneumonidae. Montezumia petiolata ocupó un nido; entre las 8 celdas disponibles, 7 fueron reusadas y 2 machos y 3 hembras emergieron en setiembre. Podium denticulatum usó 2 nidos; las 20 celdas disponibles fueron reusadas y 11 machos y 4 hembras emergieron en agosto. Trypoxylon rogenhoferi usó 5 nidos que tuvieron 65 celdas disponibles; 48 fueron reusadas, de las cuales emergieron 19 machos y 11 hembras desde se-tiembre hasta noviembre. Tres celdas fueron parasitadas por Ichneumonidae (n = 2) y chrysididae (n = 1)
