Buschini M L T, Buss C E
Programa de Pós-graduação em Biologia Evolutiva, Universidade Estadual do Centro-Oeste ? UNICENTRO, Guarapuava, PR, Brazil.
Braz J Biol. 2014 May;74(2):493-500. doi: 10.1590/1519-6984.19112.
Podium angustifrons Kohl 1902 is a species of solitary wasp which nests in pre-existing cavities, with neotropical distribution in Argentina, Bolivia, Brazil, Colombia, Guyana and French Guyana. The aim of this study was to investigate the nesting biology of P. angustifrons, discussing aspects of their life history. To capture its nests, wooden trap-nests were installed in the Parque Municipal das Araucárias, Guarapuava (PR), Brazil, from January 2003 to April 2009. A total of 29 nests were collected, all during the warmer months. These showed no vestibular and intercalary cells, and their closures were made up of chewed plants and mud mixed with organic materials and resin-coated surfaces, sometimes showing a layer of lichens. The cells were provisioned with various wild species of cockroaches (Chorisoneura sp, Riata sp and Helgaia sp) in the nymph stage and/or adults. The sex ratio was 4.6 females per male, significantly higher that the expected 1:1. Most pre-pupae entered diapause in winter with development time ranging from 187 to 283 days for females and 180 to 283 days for males. Deaths occurred in 41.66% of cells provisioned, 33.33% were attributed to faulty development and 8.33% to Chrysididae.
窄额 podium Kohl 1902 是一种独居黄蜂，在已有的洞穴中筑巢，分布于阿根廷、玻利维亚、巴西、哥伦比亚、圭亚那和法属圭亚那的新热带地区。本研究的目的是调查窄额 podium 的筑巢生物学，探讨其生活史的各个方面。为了捕获其巢穴，2003 年 1 月至 2009 年 4 月期间，在巴西瓜拉普瓦瓦（PR）的阿劳卡里亚斯市立公园安装了木制诱捕巢。共收集到 29 个巢穴，均在较温暖的月份。这些巢穴没有前庭细胞和间插细胞，其封闭物由咀嚼过的植物、与有机材料和树脂涂层表面混合的泥土组成，有时还会有一层地衣。巢穴中储备了处于若虫期和/或成虫期的各种野生蟑螂（Chorisoneura sp、Riata sp 和 Helgaia sp）。雌雄比例为每只雄性有 4.6 只雌性，显著高于预期的 1:1。大多数预蛹在冬季进入滞育期，雌性的发育时间为 187 至 283 天，雄性为 180 至 283 天。在储备有食物的巢穴中，41.66%发生了死亡情况，33.33%归因于发育不良，8.33%归因于金小蜂科。
