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Table 1 Comparison of relevant morphological characters of the zoeal stages of L. seticaudata, L. galapagensis, and L. moorei

From: Shedding light on the larval genus Eretmocaris: morphological larval features of two closely related trans-isthmian Lysmata species (Decapoda: Caridea: Hippolytidae) described on the basis of laboratory cultured material

Features L. galapagensis present study (1); Gopalakrishnan and Laurs 1971 (2) L. moorei present study L. seticaudata Calado et al. 2004
Distribution area E Pacific SW Atlantic NE Atlantic
Number of zoeal stages 8–9 8–9 9
ZI, total length, mm 2.46–2.89 (1) 2.77–2.81 3.09–3.24
ZI, carapace length, mm 0.92–1.00 (1) 0.92–0.96 0.98–1.03
ZI, rostrum length, mm 0.35–0.42 (1) 0.42 0.46
ZIV, total length, mm 4.14–4.63 (1) 3.44–3.66 3.12–3.22
ZIV, carapace length, mm 1.61–2.15 (1) 1.13–1.29 1.04–1.08
ZIV, rostrum length, mm 0.92–1.35 (1) 0.54–0.70 0.31
ZVII, total length, mm 8.24–8.48 (1) NA 4.47–4.79
ZVII, carapace length, mm 4.08–4.32 (1) NA 1.40–1.56
ZVII, rostrum length, mm 2.80–3.04 (1) NA 0.43–0.54
Last Z, total length, mm 16.10–20 (2) 7.81–9.35 6.40–6.80
Last Z, carapace length, mm 2.12–3.40 (2) 3.85–4.84 2.00–2.20
Last Z, rostrum length, mm 6.13–7.00 (2) 2.31–3.19 0.72–0.96
Carapace
 ZI, marginal denticles 4 (1) 4–5 6
 ZIV, marginal denticles 3–4 (1) 2–3 3
 ZVII, marginal denticles 0 (1) NA 0
 Last, marginal denticles 0 (2) 0 0
Rostrum
 ZIV, number of spines 5–6 (1) 0 0
 ZVII, number of spines 7 (1) NA 0
 Last, number of spines 7–8 (2) 7–9 1–2
Antenna
 Scaphocerite, absence of segments ZIV (1) ZIV ZIV
First pereiopod
 Biramous bud/functional ZI (1)/ZII (1) ZI/ZII ZI/ZII
Second pereiopod
 Very small biramous bud ZII (1) ZII ND
 Biramous bud ZIII (1) ZIII ZIII
 Functional ZIV (1) ZIV ZIV
Third pereiopod
 Very small biramous bud ZIV (1) ZIV ND
 Biramous bud ZV (1) NA ZV
 Functional ZVI (1) NA ZVI
Fourth pereiopod
 Very small biramous bud NA ND
 Biramous bud ZV (1) NA ZV
 Functional ZVI (1) NA ZVI
Fifth pereiopod
 Uniramous bud/functional ZI (1)/ZII (1) ZI/ZII ZI/ZII
Pleon
 3rd pleomere: dorsal anteriorly curved spine ZIV–ZVII (1) Absent Absent
 5th pleomere: one pair of dorso-lateral spines ZI–ZV (1) ZI–ZIV ZI–ZII
 5th pleomere: small dorsal spines ZI: 3–4; ZII: 0–2; ZIII: 0 (1) ZI: 3–4; ZII: 1–2; ZIII: 0 Absent
Pleopods
 Small buds ZVI (1) NA ZVI
 Biramous buds NA ZVII
 Endopod as bud, exopod with setae ZVII (1) NA ZVIII
 With appendix interna ZVIII (2) Last (ZVIII or IX) ZIX
  1. Z zoea, NA not available in the larval series, ND not developed