Afronurus alces, Braasch, Dietrich & Jacobus, Luke M., 2011

Braasch, Dietrich & Jacobus, Luke M., 2011, Two new species of Afronurus Lestage, 1924, from Hong Kong, China (Ephemeroptera: Heptageniidae), Zootaxa 3062, pp. 64-68 : 65

Afronurus alces , sp. nov.

( Fig. 3)

Male adult (in ethanol). Lengths: body 8.5 mm; fore wing 9.4 mm; cerci 29 mm.

Compound eyes dark blue grey; contiguous.

Thorax yellowish. Legs yellowish; fore leg with proportions of femur: tibia: tarsus (I–V) = 128:118:76 (16:21:17:10:12).

Abdomen opaque, yellow-brown; last two segments dark brown, other segments with light brown lateral maculation and darker broad, diagonal band; posterior margins of terga narrowly dark brown; sterna immaculate. Penes extraordinarily differentiated and laterally expanded.

Larva. Unknown.

Etymology. The specific epithet is a noun in apposition, and it is a reference to the shape of the penes, which is suggestive of the antlers of a moose.

Diagnosis. Afronurus alces is distinguished from congeners by its very distinctive, antlerlike penes.

Type material (in 70% ethanol). Holotype: male adult, China, Hong Kong, New territories, Fan Ling, 20/III/ 1947, M. T. Gillies [ PCDB]. Paratype: female adult, same data [ PCDB].

Other material examined. Four male adults, Hong Kong, Tai Mong Tsai, 1–7/IV/1967, Philip T.P. Tsui [ PERC].