Procloeon (Oculogaster) cylindroculum Kimmins 1956

Kluge, Nikita J., 2020, Review of Oculogaster Kluge 2016 (Ephemeroptera, Baetidae, Procloeon Bengtsson 1915), Zootaxa 4820 (3), pp. 401-437: 405

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Procloeon (Oculogaster) cylindroculum Kimmins 1956


Procloeon (Oculogaster) cylindroculum Kimmins 1956  

Procloeon cylindroculum Kimmins 1956: 865   (♂ imago); Kimmins 1960: 341 (♀ imago, ♂ and ♀ subimagines); Kimmins 1971: 312 (holotype); Gillies 1997: 247 (♀ imago, larva).

Cloeon cylindroculum: Demoulin 1970: 55   ; Gillies 1979: 155 (♂ imago); Gillies 1980: 145 (♂ and ♀ imagines, larva); Gillies 1985: 8.

Procloeon (Oculogaster) cylindroculum: Kluge 2016: 495   View Cited Treatment (larva, subimago, ♂ and ♀ imagines).

Material examined ( ZIN). TANZANIA: Njombe Region, sources of Great Ruaha river above Mfumbi (8 km E Chimala) 8°52′S, 34°05′E, 26.VII–3.VIII.2016, coll. N. Kluge & L. Sheyko: 3 L-S-I ♂ GoogleMaps   , 1 L-S ♂, 4 L-S-I ♀, 5 L-S ♀, 16 larvae; 13–16.VIII.2017, coll. N. Kluge & L. Sheyko: 1 L-S-I ♀, 5 larvae. ZAMBIA, UGANDA, MALI – see Kluge 2016.

Material newly reported: ZIMBABWE: Province Matabeleland North, Zambezi River, Victoria Falls , 24.IV.1993, coll. P.C. Matteson: 1 ♀ imago (deposited in the Purdue University Research Collection,   USA; personal communication by Thomas Klubertanz).

Additional characters. Abdominal terga of larva have not only simple (i.e. non-bifurcate) setae, but also one pair of bifurcate setae near midlength of each tergum VIII–IX and one pair of bifurcate setae near posterior margin of each tergum VII and IX (as in Figs 3 View FIGURES 1–7 and 48 View FIGURES 43–48 ). On tergum IX the row of denticles is interrupted medially, behind a pair of submedian setae (as in Fig. 47 View FIGURES 43–48 ). Other characters as formerly described ( Kluge 2016).

Distribution. Tropical Africa.

Comment. Larvae inhabit rivers with significant water current, but keep themselves in the places with nearly stagnant water; in the mountain portion of Great Ruaha many larvae were found in a pool formed by integral rock and separated by this rock from the current.

In the previous paper ( Kluge 2016), I wrote that since nobody compared specimens of the tropical Procloeon cylindroculum   with specimens of the South African form described by Barnard (1932) as « Austrocloeon africanum   », most probably these forms belong to one and the same species. Now the new reared material from South Africa allows to make such comparison and conclude that these two forms clearly differ one from another by coloration of winged stages; that fact allows them to be treated as two different species, P. (O.) cylindroculum   and P. (O.) barnardi   sp. n. (see below).


Russian Academy of Sciences, Zoological Institute, Zoological Museum














Procloeon (Oculogaster) cylindroculum Kimmins 1956

Kluge, Nikita J. 2020

Procloeon (Oculogaster) cylindroculum: Kluge 2016: 495

Kluge, N. J. 2016: 495

Cloeon cylindroculum:

Gillies, M. T. 1985: 8
Gillies, M. T. 1980: 145
Gillies, M. T. 1979: 155
Demoulin, G. 1970: 55

Procloeon cylindroculum

Gillies, M. T. 1997: 247
Kimmins, D. E. 1971: 312
Kimmins, D. E. 1960: 341
Kimmins, D. E. 1956: 865