Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 98. (Budapest 2006)

Gattolliat, J.-L. ; Sartori, M.: The mayflies of Ghana (Insecta: Ephemeroptera)

mologist at the Crop Research Institute. In his survey of insects of economic importance, he used different methods, among them light trapping. This method has proven to be quite efficient to collect adult mayflies in the tropics. Thanks to the courtesy of DÁVID MURÁNYI (HNHM), we had the opportunity to study this material. All specimens are kept in ethanol and are composed exclusively of imagoes and subimagoes; no nymphs were available for study. The material is not in perfect condition since specimens are often dried due to the collecting methods (chloroform instead of ethanol). Details of the localities are found in ENDRŐDY-YOUNGA (1970). The collection also includes a few specimens collected by Dr BÉLA ENTZ on the shores of Lake Volta during the same period. LIST OF THE ENCOUNTERED SPECIES BAETIDAE Bugilliesia notabilis (KlMMINS, 1956) Centroptilum notabile KlMMINS, 1956 (orig.) Afroptilum notabile: G ILL I KS (1990) (comb.) Bugilliesia notabilis: LUGO-ORTIZ & MCCAFFERTY (1996) (comb.) Material examined - GHANA: Northern Region, Banda-Nkwanta, Volta, 2°09'W, 8°22'N, 122 m, 1 Ç, 13.09.1965 (G073); same locality, 1 $,21.09.1965 (G081); 4 ÇÇ, 27.09.1965 (G083); 1 9, 01.10.1965 (G088); 1 Ç, 07.10.1965 (G089). All collected by S. ENDRŐDY-YOUNGA. Diagnostic features - Male imagoes of Bugilliesia LUGO-ORTIZ et MCCAFFERTY, 1998 possess highly transformed two segmented genital forceps, corresponding to the Afroptilum sudanse group in GILLIES (1990b). In this genus, B. notabilis and B. nitida (ULMER, 1916) as well as an undescribed species (see below Bugilliesia sp. A) can be easily separated from other congeneric species by the forewing markings: in both sexes, the forewings are hyaline with fuscous crossveins margined with the same colour. These three species can be distinguished by the shape of the peculiar gonopods, the degree of development of the fuscous marking (fig. 3 in KlMMINS 1956; fig. 2 in DEMOULIN 1957), the presence of an oval fuscous maculation at the apex of the costal, subcostal and radial areas in B. nitida (fig. 2 in DEMOULIN 1957), and the shape of the hindwing and especially of the costal spur (fig. 3 in KlMMINS 1956; fig. 2 in DEMOULIN 1957). In the examined material, only female imagoes were included. However, colouration as well as shape of the costal spur of the hindwings clearly fit B. notabilis.