Leeonychiurus koreanus, Park, 2017
|
publication ID |
https://doi.org/ 10.11646/zootaxa.4329.3.7 |
|
publication LSID |
lsid:zoobank.org:pub:848Bafaa-67C8-4105-B12E-F5C8B18Ff689 |
|
persistent identifier |
https://treatment.plazi.org/id/CF1687E1-FFF6-FB4F-269A-2D99FE08D3D7 |
|
treatment provided by |
Plazi |
|
scientific name |
Leeonychiurus koreanus |
| status |
sp. nov. |
Leeonychiurus koreanus sp. nov.
( Figures 1–2 View FIGURE 1 View FIGURE 2 , 5A View FIGURE 5 )
Leeonychiurus sp.1: Lee et al., 2014, Fig. 10.
Diagnosis. Dorsal pseudocellar formula 32/022/33243 ( Fig. 1A View FIGURE 1 ), ventral 11/000/0100; subcoxa 1 of legs I–III with one pseudocellus each. Postantennal organ with 13–15 compound vesicles. Abd. I–III terga with 3+3 chaetae along axial line, and without unpaired axial chaetae. Th. I–III sterna with 0+0, 1+1, 1+1 chaetae, respectively. Upper anal valve without chaetae a1.
Type material. Holotype: male on slide, Korea, Jeoksangsan mountain (N127°41´46´´ E35°58´01´´), Jeoksang-myeon, Muju-gun, Jeollabuk-do, 8–IV– 2016 in litter of a coniferous forest dominated by pine trees, collected by K.H. Park and I . A. Lee. Paratypes: 3 females and 3 males on slides, same data as holotype . 3 females and 2 males on slides, 22–III–2013, same locality as holotypes . 4 females on slides, Jogyeongdan (N127°08´01´´ E35°51´02´´), Deokjin-dong, Jeonju-si, Jeollabuk-do, 9–VII–2013, litter of mixed forest, collected by I.A. Lee and H.S. Kim.
Description. Body length (excluding antennae) of adults: males 0.85–0.96 mm, females 1.18–1.35 mm. Color white in alcohol. Cuticle granulation more or less uniform. Dorsal pseudocellar formula 32/022/33243 ( Fig. 1A View FIGURE 1 ), ventral 11/000/0100; subcoxa 1 of legs I–III with one pseudocellus each. Psx not visible. Psp formula: 00/011/ 11110 dorsally and 00/111/01m0 1m 0 0 ventrally ( Fig. 5A View FIGURE 5 ).
Head: Antennal bases well marked ( Fig. 1A View FIGURE 1 ). Antennae slightly shorter than head; ratio antennae/head=0.8– 0.9. Ant. IV subapical organite with globular apex; invaginated apical bulb absent; microsensillum in lateroexternal position approximately one-third length from the base; 7–8 sensilla, clearly distinguished from ordinary chaetae, present ( Fig. 1B View FIGURE 1 ). Ant. III sensory organ composed of five papillae, five guard chaetae, 2 rods and 2 granulated sensory clubs ( Fig. 2A View FIGURE 2 ); lateral ms just behind sensory organ. Ant. II with 16 chaetae. Ant. I with 9 chaetae. Postantennal organ with 13–15 compound vesicles arranged in two rows along axis of organ ( Figs 2C, 2D View FIGURE 2 ). Head with unpaired dorsal chaeta d0. 4+4 p-chaetae between two inner posterior pso on head, p1 anterior to others. Mandible with strong molar plate and four apical teeth, maxilla bearing 3 teeth and 6 lamellae. Maxillary palp simple with 1 basal chaeta and 2 sublobal hairs. Labral formula as 4/342. Labial palp of type AC ( Fig. 2B View FIGURE 2 : after Fjellberg, 1999), labial papillae A,B,C,D and E with 1,4,0,3,3 guard chaetae respectively ( Fig. 2B View FIGURE 2 ). Labium with 6 proximal, 4 basomedian and 6 basolateral chaetae. 4+4 postlabial chaetae present along ventral groove.
Body chaetotaxy: s-chaeta distinct, their formulas as 2/012/222120 dorsally and 11/000/000100 ventrally. Tiny and blunt ms, present on Th. II and III. Th. I tergum with 6–8+6–8 chaetae. Th. II–Abd. III with 3(4),3(4),3,3,3 chaetae respectively on both side of axial line and without unpaired axial chaetae. Abd. IV tergum with axial chaeta p0; Abd. V tergum with axial chaeta m0; Abd. VI tergum with 2 unpaired axial chaetae: a0, p0 ( Fig. 1A View FIGURE 1 ). Th. I, II and III sterna with 0+0, 1+1 and 1+1 chaetae between legs, respectively. Subcoxae 1 of legs I–III with 3, 3, 3 chaetae respectively ( Fig. 1A View FIGURE 1 ), subcoxa 2 with 1, 4, 4 chaetae.
Appendages: Tibiotarsi I, II and III with 22 (11, 8, 3), 21 (11, 8, 2) and 21 (11, 8, 2) chaetae respectively ( Fig. 1C View FIGURE 1 ). Unguis without teeth. Empodial appendage with basal lamella, appendage length shorter than inner edge of unguis ( Fig. 1C View FIGURE 1 ). Ventral tube with 6+6 distal chaetae, without anterior or basal chaetae. Furca reduced to a finely granulated area, with four small dental chaetae in one row posterior to furcal rudiment; three manubrial rows of chaetae present ( Fig.1D View FIGURE 1 ).
Anal valves chaetotaxy: each lateral valve with chaetae a0, 2a1, b0, 2b1 and 2b2; upper valve with chaetae a0, b0, 2b1, 2b2, c0, 2c1, and 2c2 ( Fig. 1E View FIGURE 1 ). Anal spines set on distinct papillae, as long as inner edge of hind unguis.
Ecology. Found in leaf litter of coniferous and mixed forest.
Etymology. The name “ koreanus ” derives from the Korean Peninsula, where the new species was collected. Korean name of the species: Hankook-lee-eori-tok-to-gi.
Discussion. The new species, L. koreanus sp. nov., can be easily distinguished from all other known species of the genus Leeonychiurus by the number of dorsal and ventral pseudocelli (Table 1 and Discussion in Leeonychiurus analis sp. nov.), first of all by the presence of two (rather than three) distinct pseudocelli on each side of Abd. III tergum.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
|
Kingdom |
|
|
Phylum |
|
|
Class |
|
|
Order |
|
|
Family |
|
|
Genus |