Anacroneuria pastora, Zúñiga & Stark & Cardona & Tamaris-Turizo & Ortega, 2007

Zúñiga, Maria del Carmen, Stark, Bill P., Cardona, William, Tamaris-Turizo, César & Ortega, Oscar E., 2007, Additions To The Colombian Anacroneuria Fauna (Plecoptera: Perlidae) With Descriptions Of Seven New Species, Illiesia 3 (13), pp. 127-149 : 129-132

Anacroneuria pastora sp. nov., Stark & Cardona

( Figs. 11-15 )

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Material examined. Holotype ♂ from COLOMBIA, Risaralda, Municipio de Pereira, Parque Regional Natural Ucumarí, Estación La Pastora , Río Otún headwater basin , 2400 m, N 04 ° 42 ′ 32 ″, W 75 ° 29 ′ 37 ″, on vegetation, 11 March 2007, M. del C. Zúñiga, W. Cardona, G. Zabala, C. Cultid ( MEUV).

Adult habitus. General color dark brown patterned with pale yellow. Head dusky to dark brown over most of central occiput and frons; lappets dark brown, M-line distinct as three pale areas ( Fig. 11 ). Pronotum dusky brown over most of disc with a narrow, pale median band and a dark midlateral band. Wings with dark brown tint, veins dark brown. Legs brown, darker on outer margins; femora with narrow, dark apical band; tibiae darker than femora.

Male. Forewing length 13 mm. Hammer cylindrical, height slightly greater than diameter ( Fig. 12 ). Aedeagal apex broadly triangular and not clearly offset from shoulders ( Fig. 13 ); ventral membranous lobes obscure. Dorsal keel absent ( Fig. 15 ), apex about as wide as long in lateral aspect ( Fig. 14 ).

Female. Unknown.

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Larva. Unknown.

Etymology. The species name, used as a noun in apposition, is based on the name of the Biological Station in the Parque Regional Natural Ucumarí.

Diagnosis. The general aedeagal shape is similar to that of A. llana Stark from Venezuela ( Stark 1995), but the absence of a dorsal keel and the lack of an apical constriction to offset the shoulders from the apex distinguish these species.

Ecological notes. The type locality is in the Cordillera Central and is part of Región Natural Andina of Colombia. The zone receives 2630 mm mean annual rainfall and a bimodal pluviometric regimen, with rain peaks in April and October and dry period in July and August. The locality is covered by a mosaic of small pastures, patches of forest and “alisos” plantations ( Alnus acuminate ). In the Holdridge life zone system, this site is classified as very humid low montane forest ( Espinal & Montenegro 1963). The specimen was collected at the beginning of the wet season and it was actively flying on the vegetation at daylight. The air temperature at the time of collection was 16°C.

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Figures

Figs. 11-15. Anacroneuria pastora. 11. Head and pronotum, 12. Male sternum 9, 13. Aedeagus, ventral, 14. Aedeagus, lateral, 15. Aedeagus, dorsal.