Macrocheles similis Krantz and Fillipponi, 1964

Ji, Su-Jung, Jung, Chuleui, Bang, Hyun Woo, Song, Min Ok, Jung, Jongwoo, Yoon, Seong Myeong, Lee, Seunghwan, Keum, Seoyoung, Yang, Hee-Min, Lee, Dongmin, Lee, Geon Hyeok, Oh, Jaeseok, Kim, Kichoon, Park, Hansol, Moon, Heejin, Joharchi, Omid, Kang, Yeseul, Eom, Keeseon S., Lee, Kyung Jin, Eun, Ye, Kim, Taeho, Karanovic, Ivana, Lee, Jeounghee, Choe, Seongjun & Min, Gi-Sik, 2023, Unrecorded species of Korean invertebrates discovered through the project of ‘ Discovery of Korean Indigenous Species’ II, Journal of Species Research 12 (1), pp. 68-89 : 79

24. Macrocheles similis Krantz and Fillipponi, 1964

( Fig. 24 ) ṪŅN응j (ṵAE)

Material examined. Sangju-si (36°21′31″N, 128°17′57″ E), Korea; from riparian glass land; collected by SY Keum on 23 May 2009 .

Deposition. NIBRIV0000813015.

World distribution. Australia, New Zealand, Japan and Korea.

Diagnosis. Female. Dorsal shield reticular polygonal, line distinct, concave anteriorly; 28 pairs of setae and 22 pairs of pores. Setae j1 distally pilose, bases adjacent; j2, j5, j6, z1, z5, z6, s4, J2, Z3, smooth and pointed; j4, z4, Z4, Z5, S5 with distinct distal pilosity. Sternal shield ornamented. Epigynial shield truncated posteriorly, divided into polygons by a series of punctate lines. Ventri-anal shield, length 245 - 316 μm, width 244 - 316 μm; fixed digit of chelicera with a single robust tooth, a terminal hook, and a pilus dentilis, Leg chaetotaxy normal for the genus, six setae on genu IV.

Remarks. Macrocheles similis is shown to reproduce by thelytokous parthenogenesis and phoretic, but predatory on Tyrophagus mites and possibly nematods (Halliday, 1994; Saito and Takaku, 2013).

Figures

Fig. 24. Macrocheles similis Krantz and Fillipponi, 1964, female.A. dorsal shield; B. tectum; C. ventral view.