Two new species of Tigriopus Norman, 1869 from Chonburi Province, Thailand (Crustacea: Copepoda: Harpacticidae) Author Chullasorn, Supawadee Author Kangtia, Pawana Department of Biology, Bansomdejchaopraya Rajabhat University, Bangkok 10600, Thailand. Author Song, Sung Joon 0000-0001-6177-2723 School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Korea. sungjoons @ gmail. com; https: // orcid. org / 0000 - 0001 - 6177 - 2723 sungjoons@gmail.com Author Khim, Jong Seong 0000-0001-7977-0929 School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Korea. sungjoons @ gmail. com; https: // orcid. org / 0000 - 0001 - 6177 - 2723 & jskocean @ snu. ac. kr; https: // orcid. org / 0000 - 0001 - 7977 - 0929 jskocean@snu.ac.kr text Zootaxa 2021 2021-10-12 5051 1 41 67 journal article 4068 10.11646/zootaxa.5051.1.6 0ecd8581-b443-4f28-8cd6-395ade9cb559 1175-5326 5564013 33238221-53F9-4842-8056-9536C09DD112
TABLE 1. Morphological characters of the Tigriopus species recorded from Thailand.
T. namaiensis sp. nov.T. thailandensisT. wannapaensis sp. nov.T. sirindhornae
antennary coxalonger than in T. thailandensissmalllonger than in T. thailandensislonger than in T. thailandensis
antennary basis distal surfaceno ornamentationtwo setular rowsno ornamentationone setular row
antenna exp-3 lateral setadiscrete at basefused to segmentfused to segments discrete at base
mandibular praecoxano ornamentationone setular rowone setular rowfour setular rows
maxillulary coxal enditefour setaethree setaefour setaefive setae
P1 coxano ornamentationone setular rowno ornamentationno ornamentation
P2 & P4 basisone setular rowno ornamentationno ornamentationno ornamentation
P6 ♀ armatureoutermost one plumose + two baremiddle one plumose + two bareall setae plumosetwo plumose + one pinnate
P5 exp ♂: longest seta extending toend of 1st abdominal somiteend of 2nd abdominal somiteend of 2nd abdominal somite2/3 of 3rd abdominal somite
P5 exp ♂: innermost seta extending toend of genital somiteproximal 1/5 of 1st abdominal somitemiddle of 1st abdominal somitemiddle of genital somite
P5 exp ♂: length ratio of 1st innermost seta to 2nd one3.12.12.22.0
P5 exp ♂: outermost setaplumosespinulosebipinnatesmooth