Recognizing Panulirus meripurpuratus sp. nov. (Decapoda: Palinuridae) in Brazil — Systematic and biogeographic overview of Panulirus species in the Atlantic Ocean Author Giraldes, Bruno Welter Author Smyth, David Mark text Zootaxa 2016 4107 3 353 366 journal article 39158 10.11646/zootaxa.4107.3.4 581e74f8-e680-4069-ada3-1cd02e09f36d 1175-5326 260885 25B292ED-867B-4737-93CD-7C65102B69E0 Key to Atlantic Panulirus —based on morphology (Adapted from Abele & Kim 1986 ; Williams 1986 ; Holthuis 1991 ; Melo 1999 ) 1. Antennular plate bearing one pair of strong spines............................................................ 2 - Antennular plate bearing 2 pairs of large spines arranged in a square............................................. 3 2. Abdominal somites 3–5 with complete transverse groove; anterior margin of side plates of somites 2–5 bearing very small teeth. Fully spotted carapace, meri of pereiopods and antennules........................................ P. guttatus - Abdominal somites 3–5 with incomplete transverse groove (interrupted in the middle). Carapace, meri of pereiopods and antennules not spotted. Meri of pereiopods striped................................................... P. e c h i n a t u s 3. No transverse groove on abdominal somites 2–5; spotted only on lateral margin of the abdominal somites..... P. laevicauda - Abdominal somite 2–5 with transverse groove and with bands or spots on upper surface............................. 4 4. No exopod on third maxilliped. Supraorbital horns short, not reaching the anterior spines on antennular plate. Abdominal somites with conspicuous transverse bands. Pereiopods with continuous longitudinal lines dorsally............... P. regius - Third maxilliped with exopod. Supraorbital horns long, overtaking the anterior spines on antennular plate. Abdominal somites with conspicuous ocellated spot on either side of each somite, largest on somites 2 and 6. When present, longitudinal lines on pereiopods are not continuous and dorsal...................................................................5 5. Carapace with deep grooves well defining all regions; very distinct divisions among cardiac, branchial and intestinal regions. Abdominal somites 2–5 with deep transverse groove often faint l medially (not distinctly interrupted); presenting only the scattered spots (not full spotted) and a continuous light line at the end of each somite............................. P. argus - Carapace with shallow groove dividing the regions; only cervical groove distinct; and faintly perceptible divisions between cardiac, branchial and intestinal regions. Abdominal somites 2–5 with shallow and incomplete transverse groove, interrupted medially, especially on somite 3; several small spots mixed among the scattered spots; small white spots lining the grooves and posterior margin of each somite............................................................. P. meripurpuratus