• Animal cells and systems
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• v.2 no.2
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• pp.187-193
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• 1998

The four zoeal stages of Alpheus brevicristatus De Haan, 1849 are described and illustrated in detail from larvae roared in the laboratory. The larvae of A. brevicristatus was compared with those of the other Alpheus and a key to the first zoeal larvae of three Korean Alpheus species is provided.

• Animal cells and systems
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• v.6 no.2
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• pp.89-93
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• 2002

The first zoeal stage of Macromedaeus orientalis (Takeda et Miyake, 1969) is described and illustrated. Its morphological characteristics are compared with those of other known species of the subfamily Xanthinae. The first zoeas of M. orientalis and M. distinguendus are similar, but they can be distinguished from each other by the characteristic of antenna. The former has a smooth antenna with a rounded tip, while the latter has a serrated antenna with a spinous tip.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.2 no.1
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• pp.1-15
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• 1969

A study on the complete zoeal development and the glaucothoe of Pegurus lenuginosus de Haan wvas conducted in the laboratoy. 1) P. lanuginosus had four zoeal stages and a single glaucothoe stage. 2) At mean temporature $13.6^{\circ}C$ and mean salinity $33.67\%_{\circ}$, total duration of the zoeal stages was approximately 31-32 days. 3) The zoeal larvae of P. lanuginosus can be easily distinguished from those of other Pagurus species in having 7+7 telson processes of which number as well as shape is consistent throughout all the zoeal stages. 4) The antennal exopodite bears five pulmose setae, and the endopodite is naked throughout the zoeal stages. 5) The 6th abdominal segment has no mid_dorsal spine on its posterior margin during the 3rd and 4th stages. 6) The basipodites of uropod are naked on the distal margin. 7) Mandibular palp is absent in the 4th stage. 8) Antenna of glaucothoe is long extending far beyond the chelipeds. 9) Ocular scale is absent in the glaucothoe. 10) Glaucothoe has 3+3 telson processes on the distal margin of the telson.

• Animal Systematics, Evolution and Diversity
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• v.10 no.2
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• pp.145-155
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• 1994

The zoeal development of the pilumnid crab, Pilumnus minutus De Haan, 1835 consisted of 4 zoeal stages. The duration of the zoeal stages was at least 15 days at $25^{\circ}C$. The morphology of the zoeal stage is described in detail, and comparisons are made with the known larvae of other species of the family pilumnidae. The Pilumnus minutus zoea strongly resembles zoeae of other species of the genus Pilumnus in the mouthpart setation and the carapace spines, but shows some differences in the abodominal lateral knobs. the Pilumnus minutus zoea has some affinities with the Parapilumnus trispinosus zoea by having the abodominal lateral knobs on somites 2, 3, 4 and 5.

• Animal Systematics, Evolution and Diversity
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• v.22 no.2
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• pp.127-138
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• 2006

An ovigerous hair crab, Telmessus acutidens, was collected in South Korean waters and its larvae were reared in the laboratory. The larval development consists of four zoeal (including an extra zoeal stage) and one megalopal stages. Four zoeal stages are described and illustrated in detail. The zoeas of the present material show some differences from Kurata (1963)'s plankton-collected zoea of T. acutidens in the characteristics of the carapace spines, an endopod and an exopod of the antenna, and the posterolateral process of the abdominal somite. Kurata's zoea agreed well with that of T. cheiragonus. So, it is suggested that Kurata's zoea may be the second zoea of T. cheiragonus.

• Animal Systematics, Evolution and Diversity
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• v.28 no.3
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• pp.185-191
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• 2012

Zoeas of Leptomithrax edwardsii were reared in the laboratory. Two zoeal stages are described and illustrated. The first zoeal stage of L. edwardsii is compared with those of seven known species of the family Majidae. It differs from previous description in the endopodal setation characters of the maxillule and the second maxilliped. It appears most similar to L. bifidus and Schizophroida simodaensis of the northwestern Pacific. A provisional key for identifying eight majid zoeas is included.

• Animal cells and systems
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• v.14 no.2
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• pp.129-136
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• 2010

The introduced spider crab Pyromaia tuberculata was collected from Korea in 2005 and it was ovigerous. After hatching, larvae were reared in the laboratory at $20^{\circ}C$. The larval stage of the species consists of two zoeal and one megalopal stages. The larvae of the Korean species differ somewhat from those from New Zealand described by Webber and Wear (1981; N Z J Mar Freshwat Res. 15:331-383) and from Brazil described by Fransozo and Negreiros-Fransozo (1997; Crustaceana. 70:304-323.) in the setal presence of the antennule, the maxillule, the maxilla and the maxillipeds, and the abdomen. It is found that Fransozo and Negreiros-Fransozo have overlooked some setae on the basis of the zoeal maxillipeds and that re-examination of their larvae is needed. Also, it is found that the Inachoididae is heterogeneous based on the zoeal morphology because two distinct groups exist in the family.

• Animal cells and systems
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• v.14 no.4
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• pp.333-341
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• 2010

The larvae of Scyra acutifrons are described and illustrated for the first time. The larval stage consists of two zoeal and a megalopal stages. The zoea of S. acutifrons is compared with those of other known species of the Epialtidae from the northern Pacific. The zoea of Scyra acutifrons can be easily distinguished from that of S. compressipes by having a longer rostral carapace spine and an endopod of maxillule with three setae. It is found that the genus Scyra (Pisinae) shows a great similarity to Pisoides bidentatus (Pisinae) and the genus Pugettia (Epialtinae) in the family Epialtidae; especially, S. acutidens coincides well with two Pugettia species (Pugettia incisa and P. gracilis) in the characteristics of the zoeal mouthpart appendages. To facilitate the study of plankton-collected material, a provisional key to the known zoeae of the Epialtidae from the northern Pacific is provided.

• Animal cells and systems
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• v.7 no.1
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• pp.11-14
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• 2003

The first zoeal stage of Pagurus japonicus is described and illustrated. Its morphological characteristics are compared with of other species of the genus Pagurus. The first zoea of P. japonicus was very similar to that of P. similis. The zoeas of the two species could be distinguished from other pagurid zoeas by morphological characteristics of the carapace without posterolateral spine. two setae on the endopod of the antenna, and 3＋3 setae on the endopod of the maxilla. They show affinities more to the species of the family Diogenidae than to the species of the genus Pagurus in respect of zoeal morphology.

• Animal Systematics, Evolution and Diversity
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• v.7 no.2
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• pp.257-264
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• 1991

The first zoea of Pinnotheres sinensis showed the characteristics which were correspond well with those of Pinnotheres zoeae ; No carapace spines, endopodites of maxillule and maxilla with 0.4, 1.2(3) setation and endopodite of second maxilliped with 0.4 setation. However, the setations of the basal and coxal endites of the maxillule and maxilla was different from those of Muraoka and Konishi (1977), Konishi(1983).The host of adult crab was Tapes, not mytilus . Thus, there was a need for detailed description of the Korean crab of Pinnotheres sinensis symbiotic with Tapes.