Potamocloeon

Gat, J. - L., 2003, The genera Demoulinia Gillies and Potamocloeon Gillies (Ephemeroptera: Baetidae) in Madagascar, Zootaxa 184, pp. 1-18 : 9-12

2.2 Potamocloeon spB

Larva

Unknown.

Male imago

Maximal length: Forewing 3.9 mm, hindwing 0.5 mm.

Head: Turbinate eyes honey­brown, with circular dark brown stripes. Thorax: Forewing ( Fig. 24 ) hyaline without cross­veins in the cubital area; pterostigma with 2 to 4 cross­veins that generally do not reach the subcostal vein. Hindwing ( Fig. 25 ) hyaline, slender with 2 distinct longitudinal veins, not joined at the base; one single long acute spur on the costal margin.

Genitalia with 3­segmented gonopods; presence of a sclerotized plate between the gonopods ( Fig. 26 ); basal segment with the inner apical angle only slightly produced; inner margin of first segment dilated and rounded apically; second segment clearly dilated apically; third segment longer than broad, obliquely truncated.

Material examined

One male imago P0405, Madagascar, Costal basin between F­Dauphin/Manampanihy, Antorendrika riv., Loc. Belavenoka, Long. 47°05'02" E, Lat. 24°50'18" S, Alt. 20 m, 23.4.1995. J.­M. Elouard and T. Pilaka.

One male imago P0528, Madagascar, Manampanihy bas., Manampanihy riv., Loc. Enosiary, Long. 46°49'19" E, Lat. 24°40'37" S, Alt. 100 m, 22.11.1995. T. Pilaka.

Figures

FIGURES 24 ­ 26. Male imaginal structures of Potamocloeon spB: 24: forewing. 25: hindwing. 26: genitalia.