Schizotergitius Verhoeff, 1930

Dyachkov, Yu. V., Farzalieva, G. Sh. & Dányi, L., 2021, On the centipede genus Schizotergitius Verhoeff, 1930, with a redescription of Schizotergitius altajicus Loksa, 1978 and a key to the genera of the family Lithobiidae in Central Asia (Chilopoda: Lithobiomorpha), Russian Entomological Journal 30 (3), pp. 361-371 : 363

Schizotergitius Verhoeff, 1930

Schizotergitius Verhoeff, 1930: 248 .

Schizotergitius — Zalesskaja, 1978: 35.

Schizotergitius — Zapparoli, Edgecombe, 2011: 383.

Schizotergitius — Eason, 1986a: 190.

Schizotergitius — Farzalieva et al., 2017: 124, table 1.

Type species: S. longiventris Verhoeff, 1930 .

BRIEF DESCRIPTION. Schizotergitius is characterized by the medium body size (12–25 mm), the functionally biarticulate tarsi 1–13, 20-segmented antennae, 5–6 ocelli, the small Tömösváry´s organ (smaller than the nearest ocellus), the forcipular coxosternite with 2+2 teeth and porodonts, the absence of posterolateral triangular projections from tergites, the elongated macrotergites (except for TT 2 and 8), TT 3, 5, 8, 10, 12 with posterior median notches, SS elongated, with sutures developed at the posterior margin, the number (2–4) of coxal pores on legs 12–15, the 1-segmented ♂ gonopods with 2–4 setae, and the ♀ gonopods with simple claws. See also Key below .

DIAGNOSIS. The genus seems to be especially similar to species of the giganteus -group of the subgenus Ezembius Chamberlin, 1919 , genus Lithobius Leach, 1814 [ Eason, 1986b], to the genus Disphaerobius Attems, 1926 , as well as to species of the genus Hessebius Verhoeff, 1941 with biarticulate tarsi ( H. perelae Zalesskaja, 1978 , H. plumatus Zalesskaja, 1978 , H. procurvus Zalesskaja, 1978 and H. pervagatus Zalesskaja, 1978 ) through the functionally biarticulate tarsi of legs 1–13, the antennae composed of 20 antennomeres, Tömösváry´s organ smaller or equal in size to the nearest ocellus, the rounded posterior angles of TT, and the 1-segmented ♂ gonopods. However, Schizotergitius differs well by the elongated macrotergites, as well as the posterior median notches developed on TT 3, 5, 8, 10, 12 in both sexes. See also Key below.

SPECIES COMPOSITION: S. longiventris Verhoeff, 1930 and S. altajicus Loksa, 1978 .

REMARK. The ♀ of S. longiventris is still unknown.