Table 1 in Molecular and morphological analyses reveal a new hypogean species of amphipod in the genus Crangonyx Bate, 1859 (Crustacea: Crangonyctidae) within the floridanus species complex, from Suwannee County, Florida

Table 1. Morphological differences observed between members of the floridanus species complex.
CharacterC. stinei sp. n.C. apalacheeC. ephemerusC. manubriumC. pseudoephemerusC. floridanus♀ Left mandible molar process with long, weaklyPresentPresentLackingPresentLackingPresentplumose setaMandibular palp second segmentSlightly longer thanSlightly longer than~2× longer thanEqual to third inSubequal to slightlySlightly longerthird in lengththird in lengththirdlengthlonger than third in lengththan third inlengthD–setae (mandibular palp)~10~13~10~9–12~9~10C–setae (mandibular palp)~2~2~2~1~1~1Maxilla 1 inner plate plumose setae~4~6~4–6~7~3–6~6Maxilla 2 inner plate plumose setae~5~6~4–5~6~3–5~5Lower lip inner lobeReduced lobesHighly reducedHighly reducedLobedHighly reduced lobedLobedlobeslobesMaxilliped inner plate total apical cuspidate setae ♀ Gnathopod 1 palmar robust setae ♀ Gnathopod 2 palmar robust setae ♀ Gnathopod 1 basis posterior marginal seta(e) ♀ Gnathopod 1 propodus to carpus ratio ♀ Gnathopod 2 propodus to carpus ♀ Gnathopod 2 propodus length to height ratio ♀ Gnathopod 2 inferior medial setae ♀ Gnathopod 2 superior medial setae ♀ Pereopod 4 coxal plate setae ♀ Pereopod 5 basis anterior robust setae ♀ Pereopod 6 dactylus~6 ~6 ~7 ~6–7 ~1.28 ~1.13 ~1.87–2.1 ~3 ~5 ~13 ~7 ~32% length of~4 ~16 ~16 ~6 ~1.05 ~1.28 ~1.88 ~4 ~7 ~15 ~9 ~36% length of~5 ~12–14 ~12–17 ~5 ~1.28 ~1.22 ~1.5 ~1 ~5 ~14 ~7 ~30% length of~5 ~6 ~8 ~4 ~1.25 ~1.15 ~1.67 ~2–3 ~2 ~14 ~7 ~45% length of~4 ~12–14 ~12 ~4 ~1.14 ~1.19 ~1.78 ~3 ~7 ~12 ~6 ~35% length of propodus~5 ~5 ~10 ~6 ~1.04 ~1.24 ~1.82 ~2 ~4 ~15 ~7 ~45% length of♀ Pereopod 7 basis anterior robust setae ♀ First epimeron facial setae ♀ Second epimeron facial setaepropodus ~4–6 0 0propodus ~5 2 3 with numerouspropodus ~7 0 0propodus ~5 0 0~5 1 0propodus ~5 0 0♀ Third epimeron facial setae0small setae 2 with numerous0000♀ First epimeron ventral marginWith robust setasmall setae Lacking robust setaeLacking robust setaeLacking robustLacking robust setaeLacking robust♀ Second epimeron ventral marginLacking pairedLacking pairedLacking pairedsetae Lacking pairedLacking paired robustsetae With paired robust♀ Third epimeron ventral marginrobust setae With 3 robust setaerobust setae With 3 robust setaerobust setae With 3 robust setaerobust setae With 3 robustsetae With 2 robust setaesetae With 3 robust♀ Uropod 1 peduncle outer robust setae~7~4~6setae ~5~8–9setae ~5–7♀ Uropod 3 outer ramus inner/outer robust setae ♀ Uropod 3 peduncle to outer ramus ratio ♀ Uropod 3 inner ramus ♂ Gnathopod 1 propodus superior medial setae ♂ Gnathopod 1 palmar robust setae ♂ Gnathopod 2 propodus superior medial setae ♂ Gnathopod 2 palmar robust setae ♂ Gnathopod 2 defining angle robust setae ♂ Pereopod 5,6,7 basis posterior margin serrations ♂ Uropod 1 inner ramus inner margin setae ♂ Uropod 1 outer ramus4,9 0.46–0.66 With robust seta ~4 ~17 ~4 ~23 ~7 7,8,10 0 With proximal8,11 0.54 With robust seta ~2 ~14 ~2 ~18 ~6 7,9,7 2 Lacking proximal8,8 0.60 With 2 robust setae Lacking ~20 ~5 ~24 ~5 10,10,9 2 Lacking proximal4,8 0.53 With robust seta Lacking ~10 ~5 ~12 ~5 5,6,9 2 With proximal6,8 0.60 With 2 robust setae Lacking ~14 ~3 ~17 ~7 6,6,9 3 With proximal ventral8,9 0.40 With robust seta Lacking ~8 ~4 ~10 ~5 6,7,6 1 With proximal♂ Uropod 2 peduncular robust setae (inner/outer) ♂ Uropod 2 outer ramus small comb–spines ♂ Uropod 3 inner ramus ♂ Uropod 3 outer ramus inner/outer robust setae ♂ Uropod 3 peduncle to outer ramus ratio ♀ Telson distal width to cleft depth ratio ♂ Telson distal width to cleft depth ratio ♀ Telson distal width to height ratio ♂ Telson distal width to height ratio ♀ Telson cleft depth to width ratio ♂ Telson cleft depth to width ratioventral robust seta 2,3 Reaches <50% Unarmed 1,6 0.4 2.1 1.7 0.79 0.79 0.96 1.06ventral robust seta 6,2 Reaches <50% Unarmed 4,10 0.46 1.71 1 0.75 0.66 1.22 0.75ventral robust seta 3,3 Reaches <50% With a robust seta 5,7 0.45 2.89 2.43 1.05 1 1.25 0.66–1.05ventral robust seta 2,2 Reaches> 50% Unarmed 4,5 0.55 1.83 1 0.66 0.51 0.93 0.44robust seta 4,2 Reaches ≤50% With a robust seta 4,6 0.5 2.1 1.63 0.99 0.78 1.09 0.66–1.05ventral robust seta 2,2 Reaches ≤50% Unarmed 3,5 0.6 2.4 1.91 0.93 0.88 1.33 1.0
(Continued)