• 제목/요약/키워드: Biological evolution

검색결과 708건 처리시간 0.026초

First Record of the Mysids, Genus Erythrops (Crustacea: Mysida: Mysidae) from Korea

  • Kim, Mi-Jin;Song, Sung-Joon;Kim, Won
    • Animal Systematics, Evolution and Diversity
    • /
    • 제28권2호
    • /
    • pp.97-104
    • /
    • 2012
  • The tribe Erythropini Hansen, 1910 belonging to the subfamily Mysinae Haworth, 1825, is one of the peculiar groups mainly found in the pelagic or deep sea. Of these, the genus $Erythrops$ G.O. Sars, 1869 including two mysids, $Erythrops$ $minuta$ Hansen, 1910 and $Erythrops$ $nana$ W. Tattersall, 1922, is reported for the first time from Korea. The genus is easily distinguished from other genera by the antennal scale with a terminal strong spine, the carpus of third to eighth thoracopods divided into the propodus by an oblique articulation, and the trapezial telson. The morphological descriptions and the illustrations of these species are given with photographs. As a result of this study, 49 species of mysids including these two species are now recorded in the Korean fauna.

A New Record of Siriella trispina (Crustacea, Mysida, Mysidae) from the Southern Coast of Korea

  • Lee, Hyemin;Kim, Mijin;Song, Sung Joon;Kim, Won
    • Animal Systematics, Evolution and Diversity
    • /
    • 제33권4호
    • /
    • pp.267-273
    • /
    • 2017
  • The opossum shrimp, Siriella Dana, 1850 belongs to the family Mysidae Haworth, 1825. It is the genus of an enormous number of species with frequent morphological variations comprising 84 valid species to date. Among the species, Siriella trispina Ii, 1964 has been recorded from the Yellow Sea and the East China Sea is reported from Korean water for the first time. Siriella trispina is characterized by its exceedingly elongated 5th pair of thoracopods, the spines on the inner ventral margin of the uropodal endopod armed with secondary spinules, and 4-5 pairs of spines on the base of the telson. In the present study, we describe Korean specimens of the species in detail with photographs and illustrations. Siriella trispina is the 8th Siriella species found in Korean fauna.

First Zoeas of Nursia rhomboidalis and Pyrhila carinata (Crustacea: Decapoda: Leucosiidae) with a Key to the Known Zoeas of Ten Leucosiid Species from Korean Waters

  • Lee, Seok Hyun;Ko, Hyun Sook
    • Animal Systematics, Evolution and Diversity
    • /
    • 제33권4호
    • /
    • pp.228-234
    • /
    • 2017
  • The first zoeas of Nursia rhomboidalis and Pyrhila carinata were obtained from laboratory condition. They are described and illustrated for the first time. Morphological comparison with those of other Korean described species of the family Leucosiidae reveals that the zoea of N. rhomboidalis is very similar to those of Myra fugax and Arcania undecimspinosa based on characteristics of the carapace spines length, the antenna morphology, the maxilla endopod setation, and the telson, whereas, the zoea of Py. carinata coincides well with those of Philyra kanekoi and Pyrhila pisum based on characteristics of the carapace spines length, the antenna morphology, the maxilla endopod setation, and the telson. Furthermore, we find that at least two groups of zoeas exist in the Korean species of the subfamily Ebaliinae. A provisional key to the known zoeas of ten leucosiid species from Korean waters is provided.

Two New Records of the Eocuma Species (Crustacea, Cumacea, Bodotriidae) from Korea

  • Kim, Sung-Hyun;Lee, Chang-Mok;Kim, Young-Hyo
    • Animal Systematics, Evolution and Diversity
    • /
    • 제33권4호
    • /
    • pp.235-245
    • /
    • 2017
  • Two cumaceans species, Eocuma amakusense $Gam{\hat{o}}$, 1967 and E. latum Calman, 1907, belonging to the family Bodotriidae are collected from the southern sea in Korea, and are redescribed. At the present, just one species belonging to the genus Eocuma, E. cf. hilgendorfi Marcusen, 1894 has been reported in Korea. Herein we add two Eocuma species to the Korean cumacean fauna and described them with full illustration contained new information of mouthparts. A key to the Korean Eocuma species is also provided.

Copidognathus daguilarensis (Acari: Halacaridae), a New Record of the Copidognathus gibbus Group from Korea

  • Lee, Jimin;Shin, Jong Hak;Chang, Cheon Young
    • Animal Systematics, Evolution and Diversity
    • /
    • 제36권2호
    • /
    • pp.167-174
    • /
    • 2020
  • A halacarid species of the genus Copidognathus is newly reported from Korea: C. daguilarensis Bartsch, 1997, which was described from Hong Kong. It is redescribed herein with detailed illustrations. Korean specimens coincide well with the original description, however, they showed two minor morphological discrepancies from it: quite shorter second palpal segment than the fourth and a modified dorsal seta on the second palpal segment. Korean specimens were rather smaller than the type specimens from Hong Kong, however, they did not show significant differences in the length to width ratios of important body parts. The number of perigenital setae was more variable in the Korean males, ranged 24-29 setae, versus 25-26 in Hong Kong's. Copidognathus daguilarensis is reported for the first time outside the type locality, and joins as the second member of the gibbus group in the northwest Pacific.

Scaptognathus magnus (Acari: Halacaridae), a New Record from Korea

  • Lee, Jimin;Shin, Jong Hak;Chang, Cheon Young
    • Animal Systematics, Evolution and Diversity
    • /
    • 제36권2호
    • /
    • pp.175-181
    • /
    • 2020
  • An arenicolous halacarid, Scaptognathus magnus Abé is first recorded from Korea, which was collected from littoral coarse sandy bottom around Simnibawi Rock off Gangreung in the east coast of South Korea. The remarkable characteristics of this species are large body with idiosoma more than 470 ㎛ long, nearly trapezoidal anterior dorsal plate, and a unique chaetotaxy of bipectinate setae 5-3-3-3 on tibiae I-IV. The characteristics of Korean specimens coincide well with the original description from Hokkaido, Japan, except for the number of parambulacral setae on tarsus III and the weak median claws. Detailed illustrations and scanning electron microscope photographs based on Korean specimens are provided.

한국 제주도산 딸기해면속 (경해면목: 딸기해면과)의 1신종 (A New Sponge of Genus Tethya (Hadromerida: Thethyidae) from Jeju Island, Korea)

  • 김영아;심정자
    • Animal Systematics, Evolution and Diversity
    • /
    • 제21권1호
    • /
    • pp.123-127
    • /
    • 2005
  • 한국 제주도에서 scuba 다이빙을 이용하여 채집한 해면동물을 동정$\cdot$분류한 결과 송악딸기해면 (Tethya songakensis)이 신종으로 밝혀졌다. 본 종은 간상 성체, 가는 아령성상체 및 가지 끝이 갈라진 구상성체에 의해 특징지어진다. 많은 구상성체 가지의 끝은 갈라졌다. 송악딸기해면은 주대골편과 거대성체가 T. simi Sara and Bavestrello, 2000과 유사하지만 미소성체의 모양에 의해 분명히 구분된다.

한국산 요각류, Phyllothalestris sarsi Sewell, 1940와 Dactylopusia falcifera Willey, 1935(요각아강, 갈고리노벌레목, Thalestridase과)의 재기재 (Redescriptions of Two Thalestrid Copepods, Phyllothalestris sarsi Sewell, 1940 and Dactylopusia falcifera Willey, 1935(Copepoda, Harpacticoida, Thalestridae)in Korea)

  • Song, Sung-Joon;Kim, Won;Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
    • /
    • 제17권2호
    • /
    • pp.229-243
    • /
    • 2001
  • 1994년부터 주로 한국의 조간대 해조류 및 아조하대 바닥 퇴적물을 걸러 채집하여 보관중이던 Thalestridae과의 갈고리노벌레류를 재검토한 결과 Phyllothalestris sarsi Sewell, 1940와 Dactylopusia falcifera Willey, 1935의 2종을 추가로 동정하였다. 이 종들은 태평양에서 처음으로 보고되는 종이다. 2종 모두 원기재가 부족하여 한국산 표본을 재료로 하여 재기재를 하였고, 근연종과의 형질비교 및 변이성 등에 관하여 고찰하였다.

  • PDF

한국미기록 긴원통발딱총새우(Alpheus paracrinitus) (십각목: 생이절: 딱총새우과)의 보고 (Occurrence of Alpheid Shrimp, Alpheus paracrinitus (Decapoda: Caridea: Alpheidae) in Korea)

  • 구혜영;김원
    • Animal Systematics, Evolution and Diversity
    • /
    • 제21권2호
    • /
    • pp.251-257
    • /
    • 2005
  • 새우류의 분류학적 연구 결과로 딱총새우속의 7개 그룹 중 diadema 그룹에 속하는 긴원통발딱총새우 (Alpheus paracrinitus)를 한국에서 처음 보고 한다. 이 종은 한국산 딱총새우속의 다른 종들과 다음과 같은 특징에 의해 구분된다: 큰 제 1가슴다리의 손바닥은 단면이 둥그스름한 원형이며, 어떤 홈도 존재하지 않는다. 작은 제 1가슴다리의 손가락은 가동지가 "balaenicep" 모양이다. 제3가슴다리의 발가락마디는 단순하다. 이제 한국산 딱총새우류는 7속, 23종으로 구성된다.

Additions to the Knowledge of the Genus Phimenes (Hymenoptera: Vespidae: Eumeninae) from Vietnam

  • Nguyen, Lien Thi Phuong;Nguyen, Dac Dai;Carpenter, James M.
    • Animal Systematics, Evolution and Diversity
    • /
    • 제32권1호
    • /
    • pp.21-27
    • /
    • 2016
  • The solitary wasp genus Phimenes (Hymenoptera: Vespidae: Eumeninae) was reported to occur in Vietnam by , represented by one taxon, Phimenes flavopictus continentalis (Zimmermann), which was synonymized under nominotypical Phimenes flavopictus by . A note on gender of this genus is made in the text. One more species, Phimenes indosinensis is recorded in this study from Dak Lak in the southern and Son La in the northwestern parts of Vietnam for the first time. Detailed descriptions of the female and male of the latter are provided with figures. A key to the two species from Vietnam is also provided.