A new species of Halectinosoma Vervoort, 1962 (Copepoda: Harpacticoida) from Argentina, including a key to species with unusual leg armature patterns, notes on wrongly assigned taxa and an updated key to ectinosomatid genera

A new species of Rangabradya (Copepoda, Harpacticoida, Ectinosomatidae) from a cave in Satun Province, southern Thailand

“…After Sciberras et al (2018) the key to genera of Ectinosomatidae includes 22 known genera. The genus Parahalectinosoma George & Schwabe, 2019 was later described from the Kuril Basin, Russia (George and Schwabe 2019).…”

Figure 10 from: Boonyanusith C, Athibai S (2021) A new species of Rangabradya (Copepoda, Harpacticoida, Ectinosomatidae) from a cave in Satun Province, southern Thailand. ZooKeys 1009: 45-66. https://doi.org/10.3897/zookeys.1009.54554

“…The third group comprises genera with a cephalothorax clearly wider than the urosome and a dorsoventrally depressed prosome, including Peltobradya Médioni & Soyer, 1968 and Pontobradya Apostolov, 2011. Of the above-mentioned genera, Halectinosoma is most speciose with 69 valid species (Sciberras et al 2018).…”

A New Species of the Genus Halectinosoma Vervoort, 1962 (Copepoda: Harpacticoida: Ectinosomatidae) from the East Coast of Korea, with a Key to Species of the Curticorne-Group

“…After that, Clément and Moore [13] proposed a herdmani-group in the genus Halectinosoma based on a number of features and provided a key for the identification of the group's females, however, due to several taxonomic ambiguities, only the herdmani-group is now recognized among the three groups [4]. In the third study, Clément and Moore [14] Sciberras et al [3] divided a total of 69 species of Halectinosoma into two groups, using a swimming leg armature formula: ancestral condition and derived condition. H. longicorne (T. and A. Scott, 1896) and H. concinnum (Akatova, 1935) were not included due to insufficient data.…”

“…Halectinosoma Vervoort, 1962 is one of the most divergent genera in the family Ectinosomatidae Sars, 1903 and is, to date, composed of 69 species [3]. Although the genus Halectinosoma is one of the largest groups in the family Ectinosomatidae, only three species of Halectinosoma have been reported in East Asia [4]: H. arenicola (Rouch, 1962) and H. perforatum Itô, 1981 in Japan (H. japonicum (Miura, 1964) was also reported but was considered as species inquirenda by Karanovic and Pesce [5]), and H. perforatum and H. foveolata Kim, Jung and Yoon, 2017 in Korea [4].…”

“…Although the genus Halectinosoma is one of the largest groups in the family Ectinosomatidae, only three species of Halectinosoma have been reported in East Asia [4]: H. arenicola (Rouch, 1962) and H. perforatum Itô, 1981 in Japan (H. japonicum (Miura, 1964) was also reported but was considered as species inquirenda by Karanovic and Pesce [5]), and H. perforatum and H. foveolata Kim, Jung and Yoon, 2017 in Korea [4]. Most recently, Sciberras et al [3] organized and reevaluated several confused and complex species of Halectinosoma during the reporting of the new species H. parejae from Argentina, and also updating the key to genera of the family Ectinosomatidae.…”