Omorgus (Afromorgus) niloticus (Harold, 1872)

(Figs. 53–57)

Trox niloticus Harold, 1872: 79 (original description).

Trox niloticus: Arrow 1912: 58 (catalogue); Balthasar 1936: 435 (diagnosis); Paulian 1948: 142 (specimens of south-west Arabia).

Trox niloticus niloticus: Haaf 1954: 345 (description, key).

Trox (Omorgus) niloticus niloticus: Scholtz 1980b: 55 (lectotype designation, redescription, distribution, key, illustration); Scholtz 1982: 12 (catalogue).

Afromorgus niloticus niloticus: Pittino 2006: 26, 79 (new combination, catalogue); Pittino & Bezdĕk 2016: 54 (catalogue).

Omorgus (Afromorgus) niloticus niloticus: Zidek 2013: 14 (checklist); Zidek 2017: 105 (checklist).

Trox erlangeri Kolbe, 1904: 293 (original description). Type locality: “Süd-Gallaland: Maua”. Type depository: Lectotype

(male) at MNHB (Figs. 58–59), one paralectotype at MNHN. Synonymised by Haaf 1954: 345. Trox erlangeri: Arrow 1927: 465 (catalogue). Trox massaicus Kolbe, 1904: 293 (original description). Type locality. “Massailand: Westufer des Manyara-Sees [Maasailand:

West shore of Lake Manyara]”. Type depository: Lectotype (male) and three paralectotypes at MNHB (Figs. 60–63).

Synonymised by Haaf 1954: 345. Trox massaicus: Arrow (1927): 465 (catalogue).

Type depository. Lectotype (female) at MNHN (Figs. 53–54).

Type locality. “ Nubien und Oberägypten [Nubia and Upper Egypt]” .

Distribution. Djibouti, Egypt, Ethiopia, Kenya, Somaliland (Somalia), Sudan, Tanzania, Uganda (Scholtz 1980b; Pittino 2006; Král et al. 2023).

Comment. Omorgus (A.) niloticus and O. (A.) moreshwar Kalawate & Strümpher, new species are very similar to each other. The two species can be told apart as elaborated under the diagnosis of Omorgus (A.) moreshwar Kalawate & Strümpher, new species .