Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 98. (Budapest 2006)
Gattolliat, J.-L. ; Sartori, M.: The mayflies of Ghana (Insecta: Ephemeroptera)
This male imago could belong to Cloeon smaeleni, but no reliable character allows the confirmation of this hypothesis. Labiobaetis sp. Matériái examined - GHANA: Northern Region, Banda-Nkwanta, Volta, 2°09'W, 8°22'N, 122 m, 1 $,05.09.1965 (G071); same locality, 1 $,13.09.1965 (G073); 1 $,21.09.1965 (G081);4 $$, 27.09.1965 (G083); 1 $, 01.10.1965 (G08 8); Ashanti Region, Kumasi, Volta, 1°36'W, 6°43'N, 293 m, 5 $, 06.07.1967 (G232); 1 $, 25.06.1969 (G377). All collected by S. ENDRŐDY-YOUNGA. Diagnostic features - In order to avoid confusion with the old concept of Pseudocloeon KLAPÁLEK, 1905 (paired intercalary veins in forewing and no hindwing), these female imagoes are provisionally included in Labiobaetis NOVIKOVA et KLUGE, 1987, although they could be conspecific with the male imagoes of Pseudocloeon cf. mtone (see general comments under that species). Because of the lack of specific characters in Labiobaetis female imagoes and poor knowledge of Ghana's fauna, their specific identification remains unknown. Procloeon cylindroculum KlMMINS, 1955 Cloeon cylindroculum: DEMOULIN (1970) (comb.) Procloeon cylindroculum: GILLIES (1997) (comb.) Material examined - GHANA: Northern Region, Banda-Nkwanta, Volta, 2°09'W, 8°22'N, 122 m, 1 $,01.09.1965 (G070); same locality, 1 $,27.09.1965 (G083); 2 $$, 27.10.1965 (G087); 2 $ $, 01.10.1965 (G088) ; Ashanti Region, Kumasi, Volta, 1 °36'W, 6°43'N, 293 m, 3 $ $, 06.07.1967 (G232); same locality, 1 cT, 1 $, 03.02.1968 (G296), S. ENDRŐDY-YOUNGA. Kete Krachi, Volta, Lake Volta, 0°05'W,7°50'N, 100 m, 1 $, 03.01.1969 (G991); Drija, sziklák [= boulders], Volta, Lake Volta, 4 $$,09.01.1969 (G992); Bagjamse, kanyar [=bend], Volta, Lake Volta, 18ó*á, 34 $$,08. 01.1969 (G993); Western Region, Mpoho.Pra, 1°47'W, 5°25'N, 7 S<3, 16 $$,06.01.1969 (G994); Brong Ahafo Region, Yeji, Volta, Lake Volta, 0°0'W, 9°27'N, 1 6\ 1 $, 08.01.1969 (G997); same locality, 4 <$S, 1 $,07.01.1969 (G998); 8 0*0*, 14 $$, 04.01.1969 (G999). All collected by B. ENTZ. Diagnostic features - Both sexes of Procloeon cylindroculum can be easily recognized by the forewing with a single veinlet in the pterostigma area and the single intercalaries, which are reduced both in length and in number (fig. 7 in GILLIES 19806). In the original description, KlMMINS (1955) mentioned the highly characteristic cylindrical eyes of the male. GILLIES (1979, 19806) noticed that a dimorphism existed in this character: a few specimens from East Africa have eyes broader at the apex than at the basis (ratio of height to width 1:1 rather than 1.5:1 in typical specimens). Specimens examined by GILLIES (19806) from Gambia are of
