Fragoso Carlos, Rojas Patricia
Laboratorio de Invertebrados del Suelo. Red de Biodiversidad y Sistemática. Instituto de Ecología A. C. Carretera Antigua a Coatepec No. 351. Col. El Haya. Xalapa, Veracruz. C.P. 91073 MEXICO.
Zootaxa. 2023 Mar 15;5255(1):136-156. doi: 10.11646/zootaxa.5255.1.16.
A new Oligochaete worm genus with a single species is described from tropical rain forests of Southern Mexico. Lacandodrilus paludosus Fragoso & Rojas gen. et sp. nov., found in sandy and acid poor swampy soils, presented a characteristic morphology of semiaquatic oligochaetes. The new taxon is holandric, with male pores and ovaries in segment 13, with genital prostatic- like lobular glands in segments 13 and 14 and with long seminal vesicles contained within ovisacs. It is also characterized by exonephric holonephridia covered by a peritoneal granular layer, septal glands and long vascular commissures in former segments. It presents a pair of spermathecae without diverticula in segment 10 and it lacks gizzards, typhlosole or esophagus glands. The new taxon is tentatively placed in family Alluroididae, waiting for additional histological studies that will clarify some characters.
从墨西哥南部热带雨林中描述了一个新的寡毛纲蠕虫属，该属仅含一个物种。Lacandodrilus paludosus Fragoso & Rojas gen. et sp. nov. 发现于沙质且酸性贫瘠的沼泽土壤中，呈现出半水生寡毛类的特征形态。这个新分类单元是雄核发育的，雄性孔和卵巢位于第13节，第13和14节有类似前列腺的小叶状腺体，精囊长且包含在卵囊中。其特征还包括被腹膜颗粒层覆盖的外肾管全肾管、隔膜腺以及前段的长血管连合。它在第10节有一对无盲囊的受精囊，并且没有砂囊、肠盲道或食管腺。这个新分类单元暂置于异蚓科，等待进一步的组织学研究来阐明一些特征。
