Eumunida, Smith, 1883

Tavares, Marcos & Lima, Daniel, 2019, First record of the genus Eumunida Smith, 1883 (Crustacea, Decapoda, Eumunididae) from the southwestern Atlantic, with the description of a new species, Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 59, pp. 1-10 : 8

Key to the Atlantic species of Eumunida

1. Carapace ( Fig. 1A, B ) with 3 hepatic spines; 1 or no inframarginal spine ( Fig.6 B-D).Antennal acicle ( Fig.1D ) with distal end distinctly overreaching articulation between fourth and fifth antennal segments ( Fig. 7 B-D). Pleon with anterolateral spine of second tergite strong ( Fig.3H ) ...................................................................2

— Carapace with 4 hepatic spines and 2 inframarginal spines ( Fig. 6A ). Antennal acicle distal end nearly reaching to the articulation between fourth and fifth antennal segments ( Fig. 7A ). Pleon with anterolateral spine of second tergite obsolete ( Fig. 3G ).................... ................................................................. Eumunida notialis sp.nov.

2. Carapace with 1 inframarginal spine; ultimate transverse ridge interrupted across carapace ( Fig. 3E, F ). Cheliped propodus with longitudinal rows of dorsolateral and dorsomesial spines ( Fig.4D, E )......................................................................................3

— Carapace without inframarginal spine; ultimate transverse ridge always entire across carapace. Cheliped propodus without longitudinal rows of dorsolateral and dorsomesial,spines ............... ................................................................................. Eumunida picta

3. Carapace with ultimate transverse ridge interrupted laterally, entire medially ( Fig. 3E ). Third thoracic sternite deeply incised anteriorly ( Fig.3B ).................................................................... Eumunida bella

— Carapace with ultimate transverse ridge fragmented into short striae of variable length ( Figs. 3F , 5D ). Third thoracic sternite moderately incised anteriorly ( Fig. 7G ).............................. Eumunida squamifera

Figures

Figure 1. (A) Schematic,lateral view of the anterior region of the cephalothorax.(B) Schematic, dorsal view of the carapace (anterior transverse ridges omitted). (C) Schematic, sternal plastron, ventral view of the third and fourth thoracic sternites (st3, st4, respectively). (D) Schematic, ventral view of the right antennal peduncle.a1-a5, antennal segments 1-5; aas, antennal anteroventrolateral spine;ac,antennal acicle;als,anterolateral spines;bms, branchial marginal spines;cb, carapace posterior margin;cg,cervicalgroove;hs,hepatic spines;ims,inframarginalspines;ls,lateral spine;lss,lateral supraorbitalspine;mp,median process (setae omitted);mss,mesialsupraorbital spine;pcg,postcervical groove;ptgs,pterygostomialspine;ptr,posterior transverse ridge;rs,rostral spine;ss,supraorbital spines; ussi,U-shaped shallowincision;utr,ultimate transverse ridge.

Figure 3.(A,C,G)Eumunidanotialissp.nov.,holotype,male,cl59mm(MZUSP25986).(B,E,H)Eumunidabellade SaintLaurent&Macpherson,1990.(B,H)Paratype, male, cl 25 mm (USNM 22913). (E) Holotype, male, cl 46 mm (MNHN-IU-2014-10257). (D) Eumunida picta Smith,1883, lectotype,male, cl 16 mm (USNM 7304). (F) Eumunidasquamiferade SaintLaurent& Macpherson,1990,holotype,female,cl 32mm(SAM A15376),after deSaint Laurent& Macpherson(1990:652,fig.2C). (A,B)Thirdand fourththoracic sternites,ventral view (st3,st4,respectively).(C-F) Posteriorregion of the carapace andfirst and second pleonal somites,dorsalview. (G,H)Detail of the secondpleonal tergite,dorsalview.ls,lateral spine;pals,second pleonal tergite anterolateral spine;ussi,U-shapedshallow incision;utr,ultimate transverse ridge.Photograph (3E) byLaura Flamme (MNHN).

Figure 4. (A-C) Eumunida notialis sp. nov., holotype, male, cl 59 mm (MZUSP 25986). (D) Eumunida bella de Saint Laurent & Macpherson,1990, holotype, male, cl 46mm (MNHN Ga 517). (E) Eumunida squamifera de Saint Laurent & Macpherson,1990,paratype,female,cl 11mm (MNHN-IU-5561).(A-C) Right chela,mesial, lateral and dorsal views,respectively;arrows:pads near bases of fixed finger and dactylus.(D) Left chela, dorsal view; arrows: dorsolateral and dorsomesial,longitudinal rows of spines on the cheliped propodus, respectively. (E) Left chela,dorsal view; arrows:dorsolateral and dorsomesial,longitudinal rows of spines on the cheliped propodus,respectively.Photographs (4D, E) by Laura Flamme (MNHN) and Marie Hennion (MNHN),respectively.

Figure 5. (A) Eumunida notialis sp. nov., holotype, male, cl 59 mm (MZUSP 25986). (B, F) Eumunida picta Smith, 1883, lectotype, male cl 16 mm (USNM 7304). (C,E) Eumunida bellade Saint Laurent& Macpherson,1990.(C) Paratype,male,cl 25mm (USNM 22913).(E)Holotype,male cl 46mm (MNHN Ga 517).(D) Eumunida squamiferade Saint Laurent& Macpherson,1990,paratype,female,cl 24mm (ICM 1042).(A-C) Anteriorregion of cephalothorax,lateral view;black arrows:hepatic spines;white arrows: inframarginal spines.(D) Carapace,dorsal view, pleonal segments cropped from image; arrows: hepatic spines. (E, F) Cephalothorax,dorsal view;arrows:carapace anterolateral spines.Photographs (5D,E) by E.Macpherson (ICM) and Laura Flamme (MNHN),respectively.

Figure 6. (A) Eumunida notialis sp. nov., holotype, male, cl 59 mm (MZUSP 25986). (B) Eumunida picta Smith, 1883, ovigerous female, cl 23 mm (USNM 98662). (C) Eumunidabella de Saint Laurent & Macpherson,1990,paratype,male,cl 25 mm (USNM 22913).(D) Eumunidasquamifera de Saint Laurent & Macpherson,1990, paratype, female, cl 24 mm (ICM 1042). (B-D) After de Saint Laurent & Macpherson (1990: 654, fig. 4A-C). Note in (A) four hepatic spines and two inframarginal spines.Scale bars:A-D = 5 mm.

Figure 7. (A,E,F) Eumunidanotialis sp.nov.,holotype,male,cl 59mm (MZUSP25986).(B) EumunidapictaSmith,1883,ovigerous female,cl 23mm (USNM 98662). (C) Eumunida bella de Saint Laurent & Macpherson, 1990, paratype, male, cl 25 mm (USNM 22913). (D, G) Eumunida squamifera de Saint Laurent & Macpherson, 1990, paratype, female, cl 24 mm (ICM 1042). (A-D) Right antennal peduncle, ventral view.(E) Left third maxilliped,ventral view (Mxp3). (F) Mxp3 merus,mesial view.(G)Thirdand fourththoracicsternites,ventral view.(B-D,G) After de SaintLaurent &Macpherson (1990:figs.6C,8A-D).Scale bars:A,F = 10mm,B-D = 5 mm, E = 20 mm,G = 3 mm. Black arrow,antennal acicle.Empty arrow,antennal anteroventrolateral spine.