Lagynochthonius tonkinensis ( Beier, 1951 )

SUN, JIANZHOU, GUO, XIANGBO & ZHANG, FENG, 2024, A review of the genus Lagynochthonius Beier, 1951 (Pseudoscorpiones, Chthoniidae) from China, Megataxa 12 (2), pp. 177-250 : 233

Lagynochthonius tonkinensis ( Beier, 1951)

Chinese name. 北DZNJȗ伪Dz

Tyrannochthonius (Lagynochthonius) tonkinensis Beier, 1951: 61–62 , fig. 9.

Lagynochthonius tonkinensis (Beier) : Chamberlin, 1962: 315; Harvey, 1991a: 185; Schawaller, 1994: 727–730, figs 1, 4–5; Schawaller, 1995: 1048; Song, 1996: 76–77, figs 3–5; Jędryczkowski, 1998: 184; Beron, 2002: 33; Zhao, Zhang, Jia and Zhu, 2011: 31; Gao and Zhang, 2013: 840, figs 3, 4.

Material examined. No specimens were examined.

Description. For details see Beier (1951).

Distribution. China (Yunnan Province, Zhejiang Province), Thailand, Vietnam.

Remarks. This species was first described by Beier (1951) based on 2 ♀ (holotype and paratype), and first reported in China by Schawaller (1995), and described by Song (1996). Our study found that the specimens described by Schawaller (1995) and Song (1996) may not belong to L. tonkinensis because of the distinct difference in size: the length of female palpal femur 0.60 mm, hand 0.40–0.41 mm, finger 0.44–0.45 mm in Beier (1951) but the length of palpal femur 0.43 mm, hand 0.27 mm, finger 0.42 mm in Song (1996). In addition, the geographical distribution of L. tonkinensis also is doubtful for Zhejiang Province ( Schawaller 1995; Song 1996).