Mesogastrura ojcoviensis Manjanggul
Creators: name: Chang, Gyu-Dong
name: Kim, Sun-Sook
name: Park, Kyung-Hwa
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Poduromorpha
Hypogastruridae
Mesogastrura
Mesogastrura ojcoviensis

description: Mesogastrura ojcoviensis (Stach, 1919)
(Figs 3c, 5b, 8b–f)
(Korean name: du-nun-gul-bo-ra-tok-to-gi)
Mesachorutes ojcoviensis Stach, 1919
Mesogastrura anthrohungarica Loksa, 1959
Type locality. Jerzmanowska cave (guano piles), Kraków, Poland.
Collecting site. Jangamgul cave (N 37° 23′ 54.0′′, E 128° 25′ 23.0′′), Jujin-ri, Pyeongchang-gun, Gangwon-do, Korea; Manjanggul cave (3 rd entrance, vertical) (N 33° 30′ 40.0′′, E 126° 45′ 1.0′′), Deokcheon-ri, Gujwaeum, Jejusi, Jeju-do Island, Korea.
Material examined. Jangamgul cave: 20 specimens on slides, 8.xii.2018, collected from guano piles at approximately 50m deep from the main entrance, leg. GD Chang, SA Beak, TK Lee; Manjanggul cave: 20 specimens on slides, 25.vi.2019, from guano piles at approximately 70 m deep from the third entrance, leg. YG Choi, GD Chang, JW Kim, SS Kim.
Additional material. Jangamgul cave: 75 specimens were in 95 % alcohol vials; Manjanggul cave: 34 specimens were in 95 % alcohol vials.
Material deposition. Specimens 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).
Ecology. This species was collected from bat guano piles which were in dark zone with varying temperature region (DZVT) on the first floor of Jangamgul cave (Fig. 2b). The collecting sites of Jangamgul cave were usually wet during early summer season. However we collected this species in winter season with relatively low humidity, and guano was almost dry. This species was also found in guano piles of twilight zone (Fig. 2d) near 3 rd entrance of Manjanggul cave which is vertical area (Fig. 2c). The humidity and temperature of collecting site of Manjanggul cave were much higher than in Jangamgul cave.
Diagnosis. Body color totally white. Head with 2 + 2 eyes. AIIIO with normal shape of 2 guards and 2 inner sensilla. Empodium filament shape without tooth. Tibiotarsus with 2 knobbed tenent hairs.Abd. I–III with a 2 chaeta. Ventral tube with 4 + 4 laterodistal chaetae. Dens with 4 + 4 chaetae. Anal spines absent.
Descriptions of Korean specimens. Body length average about 1.0 mm. Antenna, head, thorax, and abdomen ratio as 1: 1.1: 1.7: 3. Body color entirely white including antenna, except for the ocular areas (Fig. 3c). Anal spines absent. Antenna segments average ratio 1: 1: 1.3: 1.7. Ant. I with 7 chaetae. Ant. IV with 4–5 blunt sensilla in the tip of Ant. IV.
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(1) Thibaud et al. 2004; (2) Yosii, 1956; (3) Fjellberg 1998; (4) Babenko et al. 1994; (5) Jordana et al. 1997
Head with 2 + 2 eyes and 4 lobed simple shape PAO (Fig. 5b). Labral chaetae typical shape as 5, 5, 4 (apical row of chaetae much stronger than other lines) with 4 prelabral chaetae. Maxillary outer lobe with terminal hair of palp (th), and 2 sublobal hairs and one basal chaeta (bs). Maxillary head shape as in Mesogastrura libyca (Caroli, 1914), with strong three toothed-like structure and 6 lamellae (Fjellberg 1998; Fig. 26D). Labial palp shape as in M. seotalensis sp. nov. with five papillae (A–E). Mandible with 4 teeth and molar plate present. Unguis without inner tooth (rarely with 1), and with 2 chaetae on basal part.
Empodium chaetae-like shape (Figs 8b–d). Tibiotarsi I–III with 19 (8 on the middle, 11 on the tip) (Fig. 8b), 19 (8 on the middle, 11 on the tip) (Fig. 8c), 18 (7 on the middle, 11 on the tip) chaetae (Fig. 8d), respectively; 2 of them (A 1 and A 7) elongated, knobbed tenent hairs.
Ventral tube with 4 + 4 laterodistal chaetae (Fig. 8e). Furca present; manubrium, dens, and mucro ratio as 1: 2: 2.5; dens with 4 + 4 chaetae (Fig. 8f); mucro spear head-like shaped and without tooth.
Chaetotaxy. Head and body chaetotaxy similar to M. seotalensis sp. nov. (see Fig. 3a & Table 2).
Distribution. Europe and South Korea.
Remarks. The South Korean specimens of this species are found to be in general agreement with the description of the European specimens given by Thibaud et al. (2004), Babenko et al. (1994) and Jordana et al. (1997).
description: Published as part of Chang, Gyu-Dong, Kim, Sun-Sook & Park, Kyung-Hwa, 2022, One new species and one new record for the genus Mesogastrura (Collembola, Hypogastruridae) from Korean caves, with DNA barcodes, pp. 325-342 in Zootaxa 5222 (4) on pages 333-339, DOI: 10.11646/zootaxa.5222.4.2, http://zenodo.org/record/7466656