First zoeal stage of Processidae (Decapoda, Caridea): review and new descriptions of Ambidexter symmetricus Manning and Chace 1971 and Processa fimbriata Manning and Chace 1971

Table 1 Morphological characters of the first zoeal stage described for species of the family Processidae

Characters	A_pa	A_sy	N_da	P_ae	P_be	P_ca	P_co	P_ec	P_ee	P_fr	P_ma	P_mm	P_mc	P_nh	P_nn
Reference	1	2	3	3	4	5	6	7	8	2	9	10	10	10	11
Number of larval stages	8	?	9	9	8	9	10	?	?	?	9	7	9	9	9
Rostrum	+	+	−	−	−	−	−	−	−	−	−	−	−	−	−
Anterior tubercle on carapace	+	−	?	?	?	+	+	+	+	+	+	+	+	+	+
Denticles on anteroventral margin of carapace	3–6	4	2–3	2–3	?	?	3	2	?	4	3–4	4	4	3–4	3–6
Aesthetascs on exopod of antennule	3–4	4	?	?	?	3	3	3	3	4	3	3	3	3	3
Antennal scale	s	u	u	U	u	u	u	u	u	u	u	s	s	s	s
Plumose setae on antennal scale	11	11	12	12	11	11	11	12	11	11	11	11	11	11	11
Exopodal seta on maxillule	+	+	?	?	+	?	+	+	+	+	+	?	+	+	+
Setae on distal segments of exopod of Mxlp1	4	4	4	4	?	5	5	4	?	4	4	4	4	4	4
Dorsal spine on abdominal segment 3	−	−	−	+	−	−	−	−	−	−	−	−	−	−	−
Abdominal segment with pair of posterodorsal spines	4, 5	4, 5	5	5	5	4, 5	5	5	5	5	5	5	5	5	5
Anal spine	−	+	?	?	?	?	?	?	?	+	?	?	?	−	−
Pereiopod buds	1	1, 2	1	1	1	?	1, 2	1, 2	?	1	1	1	1	?	?
Setae on telson	a	b	?	?	a	b	a	b	b	b	b	a	a	a	a

Codes used for species: A_pa—Ambidexter panamensis Abele 1972; A_sy—Ambidexter symmetricus Manning and Chace 1971; N_da—Nikoides danae Paul’son 1875; P_ae—Processa aequimana (Paul’son 1875); P_be—Processa bermudensis (Rankin 1900); P_ca—Processa canaliculata Leach 1815; P_co—Processa compacta Crosnier 1971; P_ec—Processa edulis crassipes Nouvel and Holthuis 1957; P_ee—Processa edulis edulis (Risso 1816); P_fr—Processa fimbriata Manning and Chace 1971; P_ma—Processa macrodactyla Holthuis 1952; P_mm—Processa modica modica Williamson in Williamson and Rochanaburanon 1979; P_mc—Processa modica carolii Williamson in Williamson and Rochanaburanon 1979; P_nh—Processa nouveli holthuisi Al-Adhub and Williamson 1975; P_nn—Processa nouveli nouveli Al-Adhub and Williamson 1975. References: 1—Williamson 1980; 2—present study; 3—Gurney 1937; 4—Gurney 1936; 5—Lebour 1936; 6—Jagadisha and Sankolli 1977 (as P. barnardi); 7—Gurney 1923 (as P. canaliculata); 8—Gurney 1942; 9—González-Gordillo and Rodríguez 2000, Ortega et al. 2005; 10—Williamson and Rochanaburanon 1979; 11—according to Santos 1999 (we did not have access to the original description: Barnich 1996). Characters: +, present; −, absent; ?, data not available; s, segmented; u, unsegmented; a, 7 + 7; b, (2 laterally plumose setae + 5 plumose setae) + (2 laterally plumose setae + 5 plumose setae)

ISSN: 1438-3888