Abstract
The pseudoscorpion genus Allochthonius Chamberlin, 1929, belonging to the family Pseudotyrannochthoniidae Beier, 1932, is reported from China, and the subgeneric characters of Allochthonius (Allochthonius) are reviewed in detail. Three new species are diagnosed, described and illustrated under the names Allochthonius (A.) fuscus sp. nov., A. (A.) wui sp. nov. and A. (A.) trigonus sp. nov. A distribution map and a key to the species of subgenus Allochthonius (A.) are provided. In addition, Centrochthonius sichuanensis Schawaller, 1995 is transferred to Allochthonius, forming the new combination A. (A.) sichuanensis (Schawaller).
Highlights
The pseudoscorpion genus Allochthonius was erected by Chamberlin (1929) for the Japanese type species Chthonius opticus Ellingsen, 1907
The genus Allochthonius is composed of two subgenera Allochthonius and Urochthonius, which are widely distributed in Japan and South Korea
Fusheng Huang from southern and western China, we found some Allochthonius specimens belonging to the subgenus Allochthonius (Allochthonius)
Summary
The pseudoscorpion genus Allochthonius was erected by Chamberlin (1929) for the Japanese type species Chthonius opticus Ellingsen, 1907. Diagnosis: Chelal palm obviously dark in color; carapacal chaetotaxy (Fig. 1) 8–4–4–2–4 (22); coxal spines present on coxae I and consisting of 10 tridentate blades, each blade with a central spine terminally distinctly expanded as fan-shaped, all situated on a common tubercle (Fig. 4).
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