Heterocarpus abulbus Yang, Chan & Chu 2010

Abstract

Heterocarpus abulbus Yang, Chan & Chu, 2010 (Fig. 1, Table 1) Size: CL, mean 0.55 mm (range 0.53–0.58 mm); BL, mean 2.44 mm (range 2.38–2.55 mm); TL, mean 2.95 mm (range 2.88–3.05 mm). Carapace (Figs. 1 A, B, D): Dorsoventrally flattened; rostrum slightly curved downwards and slender, longer than antennular peduncle; dorsal anterior and posterior processes present; anteroventral margin bearing strong pterygostomian spine, followed by 1 minute and 1 distinct spines; eyes sessile. Antennule (Fig. 1 E): Peduncle unsegmented, slender and bearing 1 small tubercle; exopod unsegmented with 1 spatulate seta and 3 terminal aesthetascs as well as 1 terminal plumose seta; endopod with 1 long plumose seta. Antenna (Fig. 1 F): Peduncle unsegmented and with 1 spine distally; endopod unsegmented, with 1 long terminal plumose seta and 1 slender spine; exopod distally 6 -segmented, with 11 marginal plumose setae, 1 distolateral seta (simple) and inner tubercle. Mandible (Fig. 1 G): Palp absent; incisor and molar processes well differentiated; with lacinia mobilis. Maxillule (Fig. 1 H): Coxal endite with 7 (2 subterminal+ 5 terminal) setae; basial endite with 2 strong setae and 3 cuspidate setae; endopod unsegmented, with 2 subterminal setae and 3 terminal setae; exopod absent. Maxilla (Fig. 1 I): Coxal endite bilobed with 8 + 3 setae; basial endite bilobed with 3 + 4 setae; endopod with 9 (3 + 2 + 1 + 1 + 2) setae; scaphognathite margin with 5 plumose setae. First maxilliped (Fig. 1 J): Coxa with 5 setae; basis with 11 setae; endopod unsegmented with 3, 1, 2, 4 (1 subterminal+ 3 terminal) setae; exopod unsegmented with 4 long plumose natatory setae. Second maxilliped (Fig. 1 K): Coxa with 2 setae; basis with 8 setae; endopod 4 -segmented with 3, 1, 2, 5 (1 subterminal+ 4 terminal) setae; exopod unsegmented with 5 long plumose natatory setae. Third maxilliped (Fig. 1 L): Coxa without setae; basis with 4 setae; endopod 4 -segmented with 2, 1, 2, 4 (1 subterminal+ 3 terminal) setae; exopod unsegmented with 5 long plumose natatory setae. Pereiopods: Absent. Abdomen (Fig. 1 A, C): With 5 somites and without setae or spines. Pleopods: Absent. Uropods: Absent. Telson (Fig. 1 A): Subtriangular, posterior border with 7 + 7 setae, outermost 2 pairs only plumose on inner margin; bases of each seta except outermost one with row of minute spinules.Published as part of Jiang, Guo-Chen, Chan, Tin-Yam & Shih, Tung-Wei, 2014, Morphology of the first zoeal stage of three deep-water pandalid shrimps, Heterocarpus abulbus Yang, Chan & Chu, 2010, H. hayashii Crosnier, 1988 and H. sibogae De Man, 1917 (Crustacea: Decapoda: Caridea), pp. 428-436 in Zootaxa 3768 (4) on page 429, DOI: 10.11646/zootaxa.3768.4.2, http://zenodo.org/record/21860