Heterocarpus hayashii Crosnier, 1988, Crosnier, 1988

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), Zootaxa 3768 (4), pp. 428-436: 429-432

publication ID

http://dx.doi.org/10.11646/zootaxa.3768.4.2

publication LSID

lsid:zoobank.org:pub:B26D8C16-B96C-47C5-AB46-DBE1B0586F26

DOI

http://doi.org/10.5281/zenodo.4901949

persistent identifier

http://treatment.plazi.org/id/4E6087B6-FFAA-FFA1-E79E-3FE5FC17FC23

treatment provided by

Plazi

scientific name

Heterocarpus hayashii Crosnier, 1988
status

 

Heterocarpus hayashii Crosnier, 1988  

( Fig. 2 View FIGURE 2 , Table 1 View TABLE 1 )

Size: CL, mean 0.41 mm (range 0.38–0.45 mm); BL, mean 1.89 mm (range 1.85–1.93 mm); TL, mean 2.29 mm (range 2.25–2.33 mm).

Carapace ( Figs. 2 View FIGURE 2 A, B, D): Slightly dorsoventrally flattened; rostrum slightly curved and slender, longer than antennular peduncle; dorsal anterior and posterior processes present; anteroventral margin bearing strong pterygostomian spine as well as 2 distinct spines; eyes sessile.

Antennule ( Fig. 2 View FIGURE 2 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. 2 View FIGURE 2 F): Peduncle unsegmented and with 1 distal spine; endopod unsegmented, with 1 long terminal plumose seta and 1 slender spine; exopod distally 6 -segmented, with 11 marginal plumose setae, 1 distolateral seta and 1 mesial tubercle.

Mandible ( Fig. 2 View FIGURE 2 G): Palp absent; incisor and molar processes well differentiated; with lacinia mobilis.

Maxillule ( Fig. 2 View FIGURE 2 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. 2 View FIGURE 2 I): Coxal endite bilobed with 8 + 3 setae; basial endite bilobed with 4 + 4 setae; endopod with 9 (3 + 2 + 1 + 1 + 2) setae; scaphognathite margin with 5 plumose setae.

First maxilliped ( Fig. 2 View FIGURE 2 J): Coxa with 4 setae; basis with 10 setae; endopod unsegmented with 3, 1, 2, 4 (1 subterminal+ 3 terminal) setae; exopod unsegmented with 4 long plumose natatory setae.

Second maxilliped ( Fig. 2 View FIGURE 2 K): Coxa with 1 seta; basis with 9 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. 2 View FIGURE 2 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. 2 View FIGURE 2 A, C): With 5 somites and without setae or spines.

Pleopods: Absent.

Uropods: Absent.

Telson   ( Fig. 2 View FIGURE 2 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.