Anacroneuria

Stark, Bill P. & Armitage, Brian J., 2018, The Plecoptera of Panama. II. Two new species, one new country record, and additional locality records of Anacroneuria (Perlidae) from western Panama, Zootaxa 4459 (2), pp. 315-326 : 322-323

Anacroneuria sp. PA-3

( Figs. 17–18 )

Material examined. PANAMA: Chiriqui Province: Cuenca 93 ( Río Guabo ), afluente of Río Guabo , NNE Fortuna Dam near Fortuna Cabins, 8.77806°N, 82.19359°W, 1128 m, UV light, 18 February 2018, B. and T. Armitage. 1 ♀ ( BPSC) .

Adult habitus. General color yellow patterned with brown. Head mostly yellow around margins and dark brown over most of central frons ( Fig. 17 ); lappets and antennae brown. Pronotum with mesal band dark brown and lateral and sublateral areas of disk mostly dark brown. Femora banded with basal half yellow and apical half dark brown; tibiae with distal and proximal areas dark brown, median tibial sections yellow. Wings transparent or tinted pale brown; most veins slightly darker except subcostal and apical half of costa pale.

Male. Unknown.

Female. Forewing length 20 mm. Subgenital plate 4-lobed; outer lobes slightly longer and about equal in width to inner lobes ( Fig. 18 ). Sternum 9 bearing a T-shaped sclerite armed with setae; mediobasal setae short but numerous, longer setae set on apical part of T-shaped sclerite.

Larva. Unknown.

Diagnosis. The only known Anacroneuria female from Panama and Costa Rica with a 20 mm forewing length and a dark median pronotal band is A. divisa . This female is similar to A. divisa but the pronotal disc has significantly more diffuse brown pigment along the median band than other species that share this pattern.

Figures

FIGURES 15–18. Anacroneuria spp. Head and pronotum, or female subgenital plate. 15. Anacroneuria sp. PA-2, head and pronotum. 16. Anacroneuria sp. PA-2, subgenital plate. 17. Anacroneuria sp. PA-3, head and pronotum. 18. Anacroneuria sp. PA-3, subgenital plate.