Balaustium murorum Hermann, 1804

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 : 80

26. Balaustium murorum Hermann, 1804 ( Fig. 26 )

ü간ẽệ응j (ṵAE)

Trombidium murorum Hermann, 1804: 28 .

Material examined. Ansan-si (37°13′53″N, 126°34′ 49″E), Korea; collected by JS Oh on 10 April 2020.

Deposition. NIBRIV0000879477.

World distribution. Cosmopolitan ( Halliday, 2001).

Diagnosis. Body oval-shaped, blackish red, 585 - 796 μm long, 393 - 552 μm wide. Dorsum covered with densely uniformed penicilate setae. Eyes on lateral side of crista, a pair of urnulae between each eye postero-medially. Chelicera narrow dagger shaped. Pedipalp robust than other species, palp genu as wide as long, palp tibia triangularshaped.

Remarks. The genus Balaustium is a large group, with 41 species worldwide ( Mąkol, 2010). This species is usually collected on the rocks and building walls from spring to early summer, whereas B. medicagoensis is collected on the ground surface from mid-summer to autumn. Balaustium medicagoensis has a much narrow crista than B. murorum and has a rough ventral surface with round papillae ( Halliday, 2001).

Figures

Fig. 26. Balaustium murorum Hermann, 1804 (female). A. dorsal habitus; B. shape of setae. Scale bars:A=500 μm; B=50μm.