Universidad de Caldas, Facultad de Ciencias Exactas y Naturales, Manizales, Colombia.
2Florida AM University, Tallahassee, Florida, United States.
Zootaxa. 2022 Jun 15;5154(3):380-392. doi: 10.11646/zootaxa.5154.3.10.
A new species of Tricorythodes is described and illustrated based on nymphs from Colombia. Legs, mouthparts and other parts of the body were photographed through SEM and molecular characterization was performed by amplification of the COImt gene. Tricorythodes carare sp. nov. shows close affinities with T. serratus (Baumgardner vila), both sharing a similar coloration pattern and the presence of chalazae on femora. The new species can be distinguished from T. serratus and all the species of the genus by the following combination of characters: maxillary palp 3-segmented, with apical setae; dorsal surface of median and hind femora with a longitudinal row of 5 to 9 chalazae serrated in the apex, tarsal claws with 4 or 5 marginal denticles and with 13 submarginal denticles; posterior margin of the abdominal terga with serrated chalazae in the apex. SEM images and distance analysis of the partial sequences of the COI gene were useful to discriminate the new species from T. serratus (genetic divergence 1719%). An additional undescribed species of this group is reported from Esmeraldas in Ecuador and for the departments of Sucre and Choc in Colombia, but it is not described here because of the low number of individuals and the lack of DNA integrity. What is known under the name Tricorythodes serratus is suspected to be a species complex.
描述并图示了一种基于哥伦比亚若虫的新三刺蟋属物种。通过扫描电子显微镜拍摄了腿、口器和身体其他部位的照片，并通过 COImt 基因的扩增进行了分子特征描述。Tricorythodes carare sp. nov. 与 T. serratus (Baumgardner vila) 密切相关，两者具有相似的体色模式和股节上的 chalazae。新种与 T. serratus 和该属的所有物种的区别在于以下特征组合：下颚须 3 节，具顶生刚毛；中后股的背表面具 5-9 个锯齿状的chalazae 组成的纵向列，跗节爪具 4 或 5 个边缘小齿和 13 个亚缘小齿；腹部背板后缘具锯齿状的chalazae。扫描电子显微镜图像和 COI 基因部分序列的距离分析有助于将新种与 T. serratus（遗传分歧 1719%）区分开来。在厄瓜多尔的埃斯梅拉达斯和哥伦比亚的苏克雷和乔科省报告了该组的另一个未描述的物种，但由于个体数量少且 DNA 完整性缺失，这里没有对其进行描述。已知的 Tricorythodes serratus 名称可能是一个物种复合体。
