Typhlotanaidae Sieg 1984
Creators: name: Segadilha, Juliana L.
name: Serejo, Cristiana S.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Typhlotanaidae

description: Key to Typhlotanaidae species in the Brazilian coast (neuter and female only)
1. Pereopods 4–6 carpus with prickly tubercles ..................................................................................... ................................................................................................................ 2 (Typhlotanais Sars, 1882)
– Pereopods 4–6 carpus without prickly tubercles (with specialized hooks/or variable spines form). 7
2. Pereopods 1–3 coxae without spur ................................................................................................... 3
– Pereopods 1–3 coxae with spur .................................................. Typhlotanais ischnochela sp. nov.
3. Pereopods 1–3 ischium with seta shorter than merus; pereopods 4–6 basis without conspicuous spines ................................................................................................................................................ 4
– Pereopods 1–3 ischium with long seta reaching distal margin of merus; pereopods 4–6 basis with conspicuous spines .......................................................................... Typhlotanais spinibasis sp. nov.
4. Pleotelson distal margin lacking spines ............................................................................................ 5
– Pleotelson distal margin with two strong spines ............................... Typhlotanais priscilae sp. nov.
5. Cheliped basis smooth; pereopod-1 coxa with seta shorter than half of basis length ...................... 6
– Cheliped basis with ventral grooves; pereopod-1 coxa with long seta, longer than half of basis length ............................................................................................... Typhlotanais longiseta sp. nov.
6. Pereopods 2–3 coxae with very long setae reaching half-length of basis; pereopods 4–6 propodus distal setae shorter than dactylus and unguis combined ........... Typhlotanais andradeorum sp. nov.
– Pereopods2–3coxae with short setae,less than half of basis;pereopods4–6propodus distal setae longer than dactylus and unguis combined; antenna article-2 globose .. Typhlotanais bolarticulus sp. nov.
7. Pleopods present ............................................................................................................................... 8
– Pleopods absent, pleonites with pair of ventral plumose setae ........................................................... ................................................................... Aremus brasilica Segadilha, Gellert & Błażewicz, 2018
8. Pereopods 4–6 carpus without specialized hooks (with variable spines form) ................................ 9
– Pereopods 4–6 carpus with specialized hooks; unguis with trifurcated tip; body more than 10 × L:W ................................................................... Hamatipeda prolata Segadilha & Błażewicz, 2019
9. Carapace wider than pereonite-6; pereopods 4–6 merus and carpus with circumplumose spines; dactylus and unguis semi-fused ................ Meromonakantha mauri Segadilha & Błażewicz, 2019
– Carapace as wide as pereonite-6; pereopods 2–6 merus and carpus with serrated spines; pereopods 4–6 unguis with bifurcated tip; pereopods 4–6 dactylus not fused with unguis ............................................. 10 (Paratyphlotanais Kudinova-Pasternak & Pasternak, 1978)
10. Cheliped carpus with 9–10 dorsal and 7–8 ventral setae; pereopod-1 coxa with spur present ....................................................... Paratyphlotanais apletos Segadilha & Błażewicz, 2019
– Cheliped carpus with two dorsal and two ventral setae; pereopod-1 coxa without spur .................... .................................................................... Paratyphlotanais bessai Segadilha & Błażewicz, 2019
description: Published as part of Segadilha, Juliana L. & Serejo, Cristiana S., 2022, New insights gained from museum collections: new deep-sea species of Typhlotanais (Tanaidacea, Typhlotanaidae) from Brazil, pp. 1-54 in European Journal of Taxonomy 820 on pages 49-50, DOI: 10.5852/ejt.2022.820.1791, http://zenodo.org/record/6574383