Munida javieri Macpherson, 1994

Guerao, Guillermo, Macpherson, Enrique, Samadi, Sarah, Forges, Bertrand Richer De & Boisselier, Marie-Catherine, 2006, First stage zoeal descriptions of five Galatheoidea species from Western Pacific (Crustacea: Decapoda: Anomura), Zootaxa 1227, pp. 1-29 : 11-13

Munida javieri Macpherson, 1994

( Figs. 7 –11)

Size: CL= 0.97–1.00 mm; CLR= 2.44–2.47 mm; TL= 3.97 mm; EL= 0.65 mm.

Carapace ( Figs. 7 A–C). Typical galatheid larval form; without setae; rostrum elongated, extending beyond what of antennule, with spines on distal half of surface; acute spines posteriorly, posterodorsal margin with 15–17 teeth and posteroventral margin with 16­19 teeth; eyes sessile, EL approximately 1/2 of CL.

Antennule ( Fig. 8 A). Uniramous, endopod absent, with 3 aesthetascs and 3 setae terminally, 1 long subterminal plumose setae.

Antenna ( Fig. 8 B). Biramous; protopod with 1 spinose process with 2 rows of spinules, shorter than endopod (20% length of exopod), spinose process bifurcated observed only in one case (see Fig. 8 B); endopod unsegmented, without setae and with sparse spines (43% length of exopod); exopod (scaphocerite) long ending in inflated and robust process covered with spines, inner margin with 8 plumose setae and 1 simple seta.

Mandible ( Fig. 8 C). Left and right mandibles with well developed strongly spinose molar processes; palp absent.

Maxillule ( Fig. 9 A). Coxal endite with 7 sparsely setose setae; basial endite with 5 setae (2 strong prominent cuspidate setae with 3–7 denticles and 3 plumodenticulate setae); endopod unsegmented with 1 short simple seta on inner proximal margin and 5 setae on distal margin (1 subterminal simple seta + 3 long plumodenticulate and 1 simple terminal setae).

Maxilla ( Fig. 9 B). Coxal endite bilobed with 8+4 sparsely plumose setae; basial endite bilobed with 5+4 plumodenticulate setae; endopod unsegmented, bilobed, with 3 + 4 setae; exopod (scaphognathite) with 4 marginal plumose setae and 1 long posterior plumose process.

First maxilliped ( Fig. 10 A). Coxa with 2 setae; basis with 12 (3,3,3,3) sparsely plumose setae on ventral margin; endopod 5­segmented with 3,2,1,2,5 (1 subterminal + 4 terminal) setae; exopod 2­segmented with 4 long terminal plumose setae.

Second maxilliped ( Fig. 10 B). Coxa without setae; basis with 3 sparsely plumose setae (1,2) on anteroventral margin; endopod 4­segmented with 2,2,2,5 (1 subterminal + 4 terminal) setae; exopod 2­segmented with 4 long terminal plumose setae.

Third maxilliped ( Fig. 10 C). Small unsegmented bud.

Pereiopods. Absent.

Abdomen (Figs 11A, B). Five somites plus telson; somite 3 with blunt posterolateral processes; somites 4 and 5 with posterolateral spiniform processes; somites 2–5 each with pair of posterodorsal setae (sparsely plumose on somites 4 and 5) and without denticles or teeth on posterodorsal margin; pleopods absent.

Telson (Figs 11B, C). Forked with median cleft; with 7+7 processes, first (lateralmost) non­movable long and inflated process covered with spines (longer than plumose setae), second short plumose seta (anomuran hair), third to seventh bearing long, stout plumose setae with minute spinules in distal half of setae.

Figures

FIGURE 7. Munida javieri Macpherson, 1994, first zoea. A, carapace, lateral view; B, carapace, dorsal view; C, tip of rostral spine. Scale bar of A and B = 0.5 mm; scale bar of C = 0.1 mm.

FIGURE 8. Munida javieri Macpherson, 1994, first zoea. A, antennule; B, antenna; C, left mandible; D, right mandible. Scale bar of A­D = 0.1 mm.

FIGURE 9. Munida javieri Macpherson, 1994, first zoea. A, maxillule; B, maxilla. Scale bar = 0.1 mm.

FIGURE 10. Munida javieri Macpherson, 1994, first zoea. A, 1 st maxilliped; B, 2 nd maxilliped; C, 3 rd maxilliped. Scale bar = 0.1 mm.