Dulichiella anisochir ( Krøyer, 1845 )

Queiroz, Beatriz, Senna, André R. & Da Silva, Alexandre R., 2025, A new species of Maera Leach, 1814 and new records of Ceradocus Costa, 1853 and Dulichiella Stout, 1912 (Amphipoda: Hadzioidea) from Laje de Santos, São Paulo State, southeastern Brazil, Zootaxa 5711 (4), pp. 527-544 : 540-541

Dulichiella anisochir ( Krøyer, 1845)

( Fig. 7–8 )

Melita anisochir Krøyer, 1845: 317 , pl. II, fig. 1a–p.

Dulichiella appendiculata . –Wakabara, et al., 1991: 73. – Wakabara & Serejo, 1998: 574. – Serejo, 1998: 373. [not Say, 1818]

Dulichiella anisochir : Lowry & Springthorpe, 2007: 10, figs 3–6.

Material examined.

Two specimens, male, 11 mm, and male, 11 mm, dissected and drawn ( UERJ 4686 and UERJ 5178 ), 16 m depth, with trap, III/2016, Marine State Park of Laje de Santos ( 24º19’13” S, 46º10’49” W), São Paulo State, Brazil . 17 specimens, ethanol 93% ( UERJ 3697 ) ; 14 specimens, ethanol 93% ( UERJ 3698 ) ; 12 specimens, ethanol 93% ( UERJ 3700 ) ; 10 specimens, ethanol 93% ( UERJ 3701 ) ; 13 specimens, ethanol 93% ( UERJ 3702 ) ; 15 specimens, ethanol 93% ( UERJ 3703 ) , same data as dissected specimens .

Diagnosis.

Gnathopod 1 coxa anteroventral corner projected roundly, posteroventral corner with a notch; carpus 1.2× longer than propodus; propodus palm convex, serrate and defined by posterodistal corner; dactylus stout, inner margin serrate, apical nail present. Left gnathopod 2 (larger), propodus, distolateral crown with 3 spines. Right gnathopod 2 (smaller), merus with acute posterodistal projection; palm straight, serrated, defined by a long robust seta; dactylus, inner margin serrate, apical nail present. Pleonites and urossomites with dorsal spines. Epimeral plate 3, posteroventral corner strongly produced, posterior margin minutely serrate. Uropod 3, outer ramus 2× longer than peduncle, 10× longer than inner ramus. Telson deeply cleft (80% of telson length), each lobe with 3 dorsal and at least 2 lateral robust setae.

Remarks.

Dulichiella anisochir had not yet been recorded for the Marine State Park of Laje de Santos, this being the first record for the sampled location. The species recorded, D. anisochir , has 3 strong spines on the distolateral crown of propodus of the largest male gnathopod 2 and 9 dorsal spines on each pleosomite 1–3, versus 4 strong spines on distolateral crown of gnathopod 2 and 7 dorsal spines on each pleosomite 1–3 in both other species, D. ankeri and D. brunoi .

Figures

FIGURE 7. Dulichiella anisochir. Male, 11 mm, Marine State Park of Laje de Santos (24º19’13” S, 46º10’49” W), Brazil (UERJ 4686). Scales: 1.0 mm for RGn2; 0.5 mm for the remaining.

FIGURE 8. Dulichiella anisochir. Male, 11 mm, Marine State Park of Laje de Santos (24º19’13” S, 46º10’49” W), Brazil (UERJ 5178). Scales: 1.0 mm for Ep1–3; 0.5 mm for U1–3; 0.1 mm for T.