Diamphipnoa colberti, Stark, 2008

Stark, Bill P., 2008, Diamphipnoa Colberti, A New Stonefly Species From Chile, And The Possible Female Of Diamphipnopsis Beschi Illies (Plecoptera: Diamphipnoidae), Illiesia 4 (4), pp. 55-58 : 55-57

Diamphipnoa colberti sp. n.

( Figs. 1-6 )

Material examined. Holotype ♂ (pinned) from Chile, Maule, Pelluhue, along Rio Curanilahue, 26 November 2006, debu 00279411, S.A. Marshall (temporarily placed in the University of Guelph insect collection until a permanent depository in Chile can be arranged).

Adult habitus. Occiput and anterior frons dark but pale around eyes and at antennal bases. Pronotum mostly dark but pale marginal areas of thorax with hint of red pigment ( Fig. 1 ). Legs dark but with scattered oval pale spots and a narrow pale band at knee; tarsi black. Wings mottled. Cerci pale basally but dark in apical half.

4

Male. Forewing length 37 mm. Median apex of tergum 10 bearing a dark, U-shaped sclerite, prolonged on the caudal margin, and irregularly toothed along margin of tergum ( Figs 2-3 ). Paraprocts apically bilobed and bearing 1 (right side) or 2 (left side) anterior spines ( Figs. 2 , 6 ); posterior margin of paraproct with a small, semicircular toothed sclerite bearing ca. 10 minute teeth. Epiproct apex shaped somewhat like the pistil of a flower with tip slightly expanded and notched in dorsal aspect, and bent caudad at a 90 ° angle in lateral aspect ( Figs. 2-5 ); basal supports bear ca. 8-10 irregular teeth along dorsal margin and base of epiproct apex bears a single, median tooth which projects over basal supports.

Female. Unknown.

Larva. Unknown.

Etymology. I am pleased to honor an entertaining, provocative, former American presidential candidate, Stephen Colbert, of The Colbert Report with this patronym.

Diagnosis. This species is distinguished from other Diamphipnoa by the enlarged and notched dorsal aspect of the epiproct apex. All known species have the tips rounded and lateral margins near the tip parallel.

Figures

Fig. 1. Diamphipnoa colberti, adult male. Photo by S.A. Marshall.

Figs. 2-3. Diamphipnoa colberti structures. 2. Male terminalia, dorsal, 3. Male terminalia, lateral.

Figs. 4-6. Diamphipnoa colberti structures. 4. Epiproct, dorsal, 5. Epiproct, lateral, 6. Paraproct, lateral.