Leptohyphes priapus Traver 1958

Baumgardner, D. E. & Mccafferty, W. P., 2010, Revision of the genus Leptohyphes Eaton (Ephemeroptera: Leptohyphidae) in North and Central America, Zootaxa 2360 (1), pp. 1-33 : 24

Leptohyphes priapus Traver 1958

Leptohyphes priapus Traver, 1958:86 ; Allen, 1978.

Diagnosis: Leptohyphes priapus was distinguished from other Leptohyphes adults on the basis of its reddish brown body and an abdomen which is much paler than the thorax. This description is very similar to other Leptohyphes , and does not allow for definitive diagnosis from other known species.

Description: Male Adult: Length. Body, 4.0–5.0 mm; forewings, 5.0–5.5 mm; hind wings, 1.5–2.0 mm. General coloration reddish-brown; abdomen yellowish with reddish-brown markings. Head. Yellowish to pale reddish-brown; antennae yellowish. Thorax. Overall reddish-brown, yellowish medially, with pale lateral areas; sterna yellowish with dark reddish-brown margins. Forewing: membrane pale brown; longitudinal veins light reddish-brown; costal vein reddish-brown; vein CuP not strongly curved towards A; vein ICu 2 united basally with ICu 1; ICu 1 attached basally with CuP by crossvein; MP 2 united basally to MP 1 and CuA by cross vein. Hind wing: with elongate costal process, and three longitudinal veins; hind margin of fore- and hind wings fringed with filiform setae. Legs: pale reddish-brown. Abdomen. Yellowish, banded with light reddish brown. Genitalia: forceps three segmented; first segment short, stout; second segment elongate; third segment small, globular. Penes with basal half fused, distal parts divergent, “Y” shaped, with small spine on apical margin of each lobe.

Distribution: Known only from the type locality in Costa Rica.

Discussion: Described by Traver (1958) based upon a long series of male adults from the Río Pedregoso, a river which is evidently located in the Nicoya Complex of western Costa Rica. No other collections of this species have been reported since its original description.

Type material examined: PARATYPES: COSTA RICA: Río Pedregoso , February 1939, D.L. Rounds, 7 male adults in alcohol, in 3 vials [ FAMU] .

Other material examined: None.