Laboratrio de Ecologia e Taxonomia de Invertebrados Aquticos, Universidade Federal do Oeste do Par, CEP 68040-470, Santarm, PA, Brazil. .
Coordenao de Biodiversidade, Diviso de Curso de Entomologia, Instituto Nacional de Pesquisas da Amaznia, CEP 69067-375, Manaus, AM, Brazil. .
Zootaxa. 2021 Aug 17;5023(1):131-141. doi: 10.11646/zootaxa.5023.1.8.
A new species of Tricorythopsis is described, illustrated and diagnosed based on nymphs from Par state, Brazil. Tricorythopsis similis sp. nov. is related to Tricorythopsis rondoniensis (Dias, Cruz Ferreira) based on abdominal terga IIIVII with acute tubercles medially located on posterior margins, and by the absence of the transversal line on operculate gill. However, the new species can be identified by the following combination of characteristics: general coloration yellowish brown, with blackish and purplish marks irregularly distributed; maxillary palp 1-segmented; segment II of labial palp shorter than segment I and longer than segment III; femora and tibiae with margins covered by long, pectinate setae; tarsal claws with 4 to 5 marginal denticles and 4+2 very small, submarginal denticles. This is the first species of Tricorythopsis recorded from Par state.
描述、图示并基于来自巴西帕拉州的若虫，鉴定一新种三刺心颅跳甲。Tricorythopsis similis sp. nov. 与 Tricorythopsis rondoniensis （Dias, Cruz Ferreira）关系密切，基于腹部的 IIIVII 背板具中央位于后缘的锐刺突，并且无盖鳃上的横带。然而，新种可以通过以下特征组合来识别：整体颜色为黄褐色，具不规则分布的黑色和紫色斑；下颚须 1 节；下唇须的第二节约为第一节的一半，长于第三节；股节和胫节具边缘被长而栉状的刚毛覆盖；跗节爪具 4 到 5 个边缘小齿和 4+2 个非常小的亚缘小齿。这是帕拉州记录的第一种三刺心颅跳甲。
