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Anurida troglodyta sp. nov.: A, Body chaetotaxy, dorsal view; B, Sensilla with Ant III & IV; C, Mandible; D, Maxillar lamellae.
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Three troglobiontic species of Anurida Laboulbène, i.e. A. troglodyta sp. nov., A. decipiens Yosii, 1966, and A. plurichaetotica Yosii, 1966, were found in limestone caves of Korea during recent investigation. The new species, A. troglodyta sp. nov., is characterized by morel-like PAO having more than 100 vesicles and by having 16-17 sensilla on an...
Contexts in source publication
Context 1
... Body length 3.0-3.8 mm. Colour in alcohol creamy-white. Body shape slender, elongate (Figs 1A, 2A, 2D). Paratergites on thorax and abdomen lobed laterally, Abd VI truncated. Body integument with uniform, coarse granulation. Ocelli absent. Ant IV as in Fig. 1B, with 16-17 curved sensilla; external ms and subapical organite present; trilobed apical papilla present subterminally. Ant III and IV fused dorsally. Sensory organ of Ant III consisting of two sensory pegs, two long, widely separated outer sensilla, and a small ventral ms. Ant II with 12 chaetae. Ant I with 7 chaetae. PAO morel-like ...
Context 2
... pegs, two long, widely separated outer sensilla, and a small ventral ms. Ant II with 12 chaetae. Ant I with 7 chaetae. PAO morel-like with more than 100 vesicles in a bunch (Fig. 2C); each vesicle with lots of perforations on SEM photo. Mandibles with 5 teeth: 3 apical ones in oblique transverse row, large basal one and strong intermediary tooth (Fig. 1C). Maxillary capitulum with 4 teeth and three serrated lamellae: lam.2 longer than capitulum (Figs 1D, 2B). Labral formula interpreted as 4/2334. Labium with 10 chaetae on each side: apical part with 4 chaetae and 2 small, peg-like sensilla (as in Fig. 4A). Female genital plate with 18-26 microchaetae; male genital plate with about ...
Context 3
... Dorsal chaetotaxy moderately plurichaetotic (Fig. 1A), especially on head, thorax and laterally on pleura: the position and numbers of some chaetae varied; macro-and microchaetae well differentiated, head dorsally with 2 mesochaetae and 4 macrochaetae, without dorsal macrochaetae on Th II-Abd IV. Macro-and microchaetae slightly serrated, sensilla smooth. Lateral macrochaetae strongly ...
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A new troglobitic Pselaphinae, Tychobythinus villasmundi sp. nov., is described from Villasmundo Cave (Melilli, Syracuse province, Sicily). Major diagnostic features are illustrated based on both male and female specimens. The new species shows some adaptations to cave life, such as pale brown colour, setation consisting of long and flattened setae...
Citations
... Korea is a country with a karstic geomorphology, and recent surveys suggest there are at least 1000 caves and many more to be explored (Woo & Kim 2018). Considering this diversity but also the past climatic history of the country, that includes significant biome changes during the glacial periods Chung et al. 2017), it is not surprising that there is a high diversity of karst invertebrates, including arachnids (Namkung 1980;Yoo et al. 2015), hexapods (e.g., Cho et al. 2003;Lee & Park 2016) and molluscs (e.g., Choi & Park 2020). Of these, many have a troglomorphic appearance, meaning that they lack eyes, have elongated body appendages, and modified sensory systems (Howarth & Moldovan 2018). ...
South Korea is a country with more than 1000 caves that support a high diversity of invertebrate species. Here we review the pseudoscorpion genus Spelaeochthonius Morikawa, 1954 (family Pseudotyrannochthoniidae) that is exclusive to caves in Japan and South Korea and reinstated here as a valid taxon. Based on recent field collections, three species in this genus are described from South Korea: S. dentifer (Morikawa, 1970), comb. nov., S. cheonsooi sp. nov., and S. seungsookae sp. nov. Based on present-day knowledge about range sizes and morphological variability in this fauna, three Japanese taxa currently classified as subspecies are elevated to species rank: Pseudotyrannochthonius kobayashii akiyoshiensis (Morikawa, 1956) = Spelaeochthonius akiyoshiensis Morikawa, 1956, stat. nov., Pseudotyrannochthonius kobayashii dorogawanesis (Morikawa, 1956) = Spelaeochthonius dorogawaensis Morikawa, 1956, stat. nov.; and Pseudotyrannochthonius undecimclavatus kishidai (Morikawa, 1960) = Spelaeochthonius kishidai (Morikawa, 1960), stat. nov. We emphasize that no epigean Spelaeochthonius have ever been found despite considerable search effort in the forests of Japan and Korea, and that past glacial cycling may have resulted in the total extirpation of surface species in this lineage. We also note that all species are narrow-range endemics that may require conservation management.
... and A. trioculata may well be regarded as not a primitive trait, but simply the result of a weak polychaetosis. In the general appearance (body shape, large size, weak colouration, as well as strong differentiation of dorsal setae and, as a rule, long and numerous lateral setae), most species of the hammerae-group resemble some cave forms known in the region under study (Yosii 1956(Yosii , 1966(Yosii , 1970Lee & Park 2016). However, it is too difficult to judge about their close relationship due to the unique chaetoms in most cave forms. ...
A new species of the genus Anurida is described and illustrated based on material from the Khabarovsk Territory, Russia: A. hirsuta sp. nov. This new species belongs to the amphi-Pacific hammerae-group and it seems to be particularly similar to the Beringian A. hammerae Christiansen, 1952 and the Japanese A. trioculata Kinoshita, 1916. Anurida hirsuta sp. nov. can easily be distinguished from both latter species primarily by its peculiar dorsal chaetotaxy, apparently the most complete among all congeners. A key is presented to all eight species presently known to compose the group.
... Some specimens were studied with a Field Emission scanning electron microscope (FE-SEM SUPRA40VP) installed in the Center for University-Wide Research Facilities (CURF) at Jeonbuk National University, Jeonju, Korea. The specimens were chemically fixed for SEM observation (Lee & Park, 2015). Types are housed in the National Institute of Biological Resources, Incheon, Republic of Korea (NIBR) and in the Insect Collection of the Biology Education Department, Jeonbuk National University, Jeonju, Korea (JBNU). ...
Two new species, Heteraphorura koreana sp. nov. and Psyllaphorura jirisana sp. nov., of the tribe Hymenaphorurini are described and illustrated based on materials from South Korea. Heteraphorura koreana sp. nov. belongs to the oriental species-group of the genus Heteraphorura, because of compound vesicles in the postantennal organ. This new species shares the same number of PAO with Heteraphorura pseudoseolagensis (Martynova, 1981) from Russia, but differs in pso dorsal formula and lateral teeth of claw. Psyllaphorura jirisana sp. nov. is similar to Psyllaphorura sensillifera
(Martynova, 1981) from the Russian Far East, but can be distinguished by shape of vesicles in PAO, dorsal s-chaetae on head and ratio AS/unguis.
... As a result of the survey, 16 Collembolan species, including 10 new species, were reported (Yosii 1966). Subsequently, there have been several studies on Collembola from Korean caves (Lee 1974;Lee & Park 1984, 1986Park & Lee 1995;Chang et al. 2015;Lee & Park 2016). These resulted in the enumeration of 27 species of Collembola comprising eight families. ...
A new species of Plutomurus Yosii, 1956, P. jangamensis sp. nov., was found in a limestone cave of South Korea. The new species is very similar to P. gul (Yosii, 1966) in the general pattern of cephalic and body chaetotaxy, absence of eye, presence of pointed tenent hair, number of lateral macrochaetae in basal segment of dens, and number of mucronal intermediate tooth; however, the two species can be distinguished by the small spines arranged in-a-row along with dental spines and lighter body color. This species, however, shows variability and was not easily classified morphologically as P. jangamensis sp. nov. and P. gul., in terms of body color, formula of dental spine, or even the number of prelabral chaetae. Partial DNA sequences of the mitochondrial cytochrome c oxidase subunit I (COI) gene were used as DNA barcodes to distinguish the species. This result suggests that the COI gene is useful for discrimination of P. jangamensis sp. nov. with high support (bootstrap=100). An identification key to the world species of Plutomurus is also provided.
... For example, only the widespread A. tullbergi Schött 1891 has been found on the Korean Peninsula (Weiner, Najt, 1985). Three terrestrial forms, A. trioculata Kinoshita 1916, A. papillosoides (Hammer 1953 and A. abashiriensis Babenko et Nakamori 2018, have been recorded in Japan, although the genus includes many cave forms in both Japan and Korea (Yosii, 1956, 1972, 1977, Lee, Park, 2016. The genus is equally impoverished across the vast territories of China, with only two species involved: A. kazukoae Tamura 1997 and A. tamurae Yue et Yin 1999. ...
A review of the Anurida fauna of the Far East of Russia was performed, based on fresh material from forest ecosystems of Primorsky Krai. This taxon generally seems to be highly diverse and rather peculiar in the region under consideration. Seven new species of the genus are described and illustrated. Four of them, A. pallens sp. n., A. armifera sp. n., A. multisensillata sp. n. and A. olae sp. n., belong to the weberi-group widespread
in Siberia and North America. They can be distinguished by colouration, the number of ocelli, fine differences in the structure of the mouthparts and in the set of sensilla on the antennae. Anurida elegans sp. n. is a typical representative of the Beringian hammerae-group most similar to A. luciae Fjellberg 1985. Anurida longilamellata sp. n. resembles two Asiatic blind species, viz. A. nadezhdae Babenko 1998, described from central
Siberia, and A. kazukoae Tamura 1997, known from China. The other described blind species, i.e. A. aspera sp. n., can be compared to a number of congeners, most of which are also known only from adjacent regions of the East Palaearctic. A key to the known non-cave Asiatic species of the genus is provided.
Two new littoral species of the genus Anurida, viz. A. kyshyensis sp. nov. and A. abashiriensis sp. nov., have been described from the eastern coasts of Chukchi Peninsula (Russia) and Hokkaido Island (Japan), respectively. The former species is most similar to sympatric A. similis Fjellberg, 1985 and A. martynovae Fjellberg, 1985 differing from both of them due to the permanent presence of additional lateral setae on thorax and 3+3 axial setae on Abd.4. A. abashiriensis sp. nov., having unique mandibles and hypertrophic elongate maxillae with long lamellae, is hard to compare with any known species of Anurida and allied genera.
Two new species of the genus Leeonychiurus Sun & Arbea, 2014 from South Korea, i.e. L. koreanus sp. nov. and L. analis sp. nov., are described and illustrated. The former differs from other known congeners by having only 2 distinct pseudocelli on each side of Abd. III (three in all other species). The second species, L. analis sp. nov., being rather similar to L. koreanus sp. nov., can easily be distinguished due to the presence of dorsal pso on Th. I (absent in L. koreanus sp. nov.) and three dorsal pso on Abd. III (only two pso in L. koreanus sp. nov.), chaetotaxy of anal valves is also specific, characterized by the presence of chaetae a1 and the absence of chaeta c0 on upper anal valve. An identification key to all known species of the genus Leeonychiurus species is also provided.
