Hamatipeda, Blazewicz-Paszkowycz, 2007

Segadilha, Juliana Lopes, Serejo, Cristiana Silveira & Błażewicz, Magdalena, 2019, New species of Typhlotanaidae (Crustacea, Tanaidacea) from the Brazilian coast genera Hamatipeda, Meromonakantha and Paratyphlotanais, with description of Targaryenella gen. nov., Zootaxa 4661 (2), pp. 309-342 : 319

Key for identification of Hamatipeda species

1. Pereopods 2–3 merus ventral spine absent; pereopods 2–3 carpus with one ventral spine............................. 2

- Pereopods 2–3 merus ventral spine present; pereopods 2–3 carpus with two ventral spines........................... 3

2. Body about 20 times L:W; antennule article-3 about four times L:W (length/width ratio); uropod endopod 2-articled H. longa

- Body about 13 times L:W; antennule article-3 1.4 times L:W (length/width ratio); uropod endopod 1-articled....... H. sima

3. Pereonites 1–3 lateral margins wider anteriorly (trapezoidal); pereopod-1 merus and carpus ventral spines absent; pereopods 2–3 carpus with circumplumose and smooth spine; uropod endopod 1-articled........................... H. trapezoida

- Pereonites 1–3 lateral margins parallel; pereopod-1 merus and carpus ventral spines present; pereopods 2–3 carpus with two smooth spines; uropod endopod 2-articled.................................................... H. prolata sp. nov.