This study dealt with cumacean specimens collected from the shallow waters of the South Sea and East Sea, Korea.
A light-trap was used to collect specimens from the shal-low waters of the South sea and East sea of Korea between 1994-2001. Drawings and measurements were performed with the aid of a drawing tube equipped on a light micro-scope. Body length was measured from the anterior tip of the carapace to the posterior end of the last abdominal segment. Lengths of appendages were measured along the mid-line of each appendage, exclusive of the inflated outer angle.
Order Cumacea Kroyer, 1846
Family Nannastacidae Bate, 1866
Genus Campylaspis Sars, 1865
1*Campylaspis fusiformis Gamo, 1960 (Figs. 1, 2)
Antenna 1 (Fig. 1D). Peduncle 3-articulated; first article
[Fig. 1.] Campylaspis fusiformis male. A Habitus lateral; B Cephalothorax dorsal; C Surface of carapace; D Antenna 1; EAntenna 2; F Maxilliped 2; G Maxilliped 3; H Pereopod 1. Scale bars: A B=1 mm C D F=0.1 mm E G H=0.3 mm.
slightly longer than second one, with 1 simple and 1 plu-mose setae near inner corner; second article with 2 simple and 2 sensory setae near distal margin; third article slightly shorter than second one, with 1 sensory seta on inner cor-ner. Main flagellum 4-articulated; third article very long, with 1 short seta and 1 aesthetasc near distal margin; fourth arti-cle subequal to 1/4 length of third one, with 1 aesthetasc, 1 sensory and 2 long simple setae near terminal margin. Acce-ssory flagellum uniarticulated, slightly longer than fourth article of main flagellum, with 3 simple and 2 sensory setae.
Antenna 2 (Fig. 1A, E) very long, extending beyond uro-podal peduncle. Peduncle 4-articulated; third article with 1 short sensory seta and 9 rows of long sensory setae on sur-face; last article with 3 short sensory setae and 10 rows of long sensory setae on surface.
Thorax (Fig. 1A) 0.55 times as long as carapace length and slightly longer than 1/5 body length. Abdomen 0.6 times as long as cephalothorax length.
Maxilliped 2 (Fig. 1F). Basis two times longer than wide, with 1 strong pappose seta on inner corner; dactylus with 3 spiniform setae on terminal margin.
Maxilliped 3 (Fig. 1G). Basis slightly longer than remain-ing articles combined, with numerous hair-like setae on inner margin, 2 plumose setae on inner corner, 2 plumose setae and 1 short simple seta on outer corner; merus with several teeth and 8-9 simple setae on inner margin.
Pereopod 1 (Fig. 1H). Basis 1.12 times as long as remain-ing articles combined, with 2 plumose setae distally on inner margin, 2 short simple setae distally on outer margin; car-pus 0.9 times as long as propodus, with 2 plumose, 3 short simple setae on inner margin, 2 plumose setae on outer mar-gin.
Pereopod 2 (Fig. 2A). Basis 0.75 times as long as remain-ing articles combined, with 1 plumose seta on inner corner, 2 short simple setae on outer margin distally; dactylus 3.8 times as long as propodus, with 10 simple setae on inner margin, 6 simple setae on outer margin, terminal margin pointed, with 1 short and 3 long simple setae.
Pereopod 3 (Fig. 2B). Basis 1.7 times as long as remain-ing articles combined.
Pereopod 4 (Fig. 2C). Basis 1.25 times as long as remain-ing articles combined.
Pereopod 5 (Fig. 2D). Basis 0.7 times as long as remain-ing articles combined.
Uropod (Fig. 2E). Peduncle 2.7 times as long as pleonite 6, with 2 plumose and 6 pectinated setae on inner margin; endo-pod uniarticulated, 0.6 times as long as peduncle length; in-ner margin serrated, with numerous hair-like setae, 9 spini-form setae; outer margin with 12 short sensory setae; termi-nal margin with 1 short simple seta, 2 pectinated setae; exo-pod biarticulated, 0.7 times as long as endopod, with 1 pecti-nated seta on inner margin; outer margin with 3 simple setae; terminal margin with 2 pectinated setae.
Our male specimens agree well with the original descrip-tion of
Korean name: 1*고랑꼬마올챙이새우(신칭)