Grupo de Investigaciones Entomológicas GIE, Universidad del Valle, Departamento de Biología, Calle 13 No. 100-00, Cali, 72000, Valle del Cauca, Colombia.
Laboratorio de Investigaciones en Ecología y Sistemática Animal LIESA, Centro de Investigación Esquel de Montaña y Estepa Patagónica CIEMEP (CONICET - UNPSJB), Roca 780, Esquel, 9200, Chubut, Argentina.
Sci Rep. 2020 Apr 10;10(1):6191. doi: 10.1038/s41598-020-62978-w.
Stenhelmoides Grouvelle is a Neotropical genus of Elmidae and although it exhibits a wide distribution, until now no larvae had been associated with adults of this genus. Larvae, very likely belonging to this genus, were associated based on co-occurrence with adults. Eleven larvae and nine adults were examined from ten localities at altitudes between 30 and 682 m a.s.l. in the Andean, Caribbean and Pacific regions in Colombia. Mature larvae of the Stenhelmoides rufulus (Hinton) are described and illustrated for the first time. A larval diagnosis for the genus is presented; body shape, distribution and form of setae and number of pleural sclerites are diagnostic characters for larvae of this genus. Comparative notes with similar larvae of other Elmidae genera are presented. The existing generic keys are updated to include larvae of Stenhelmoides. Comments on distribution and habitat of Stenhelmoides larvae are also provided. This work contributes to enhance the knowledge of Neotropical larvae, which have been described for only approximately 56% of genera and 8% of species of Elmidae.
Stenhelmoides Grouvelle 是榆叶蜂科的一个新热带属，尽管它分布广泛，但直到现在还没有与该属的成虫相关联的幼虫。幼虫很可能属于这个属，是根据与成虫的共存而被关联的。在哥伦比亚的安第斯山脉、加勒比海和太平洋地区的十个海拔 30 至 682 米的地点，检查了来自十个地点的 11 个幼虫和 9 个成虫。首次描述并图示了 Stenhelmoides rufulus (Hinton) 的成熟幼虫。提出了一个属的幼虫诊断；身体形状、刚毛的分布和形式以及胸板小骨的数量是该属幼虫的鉴别特征。还提出了与其他榆叶蜂科相似幼虫的比较说明。更新了现有的属钥匙，以包括 Stenhelmoides 的幼虫。还对 Stenhelmoides 幼虫的分布和栖息地进行了评论。这项工作有助于提高对新热带幼虫的认识，目前只有大约 56%的榆叶蜂科属和 8%的物种的幼虫被描述过。
