Anacroneuria magnirufa Jewett, 1958

Kondratieff, Boris C. & Armitage, Brian J., 2019, The Plecoptera of Panama. III. The genus Anacroneuria (Plecoptera: Perlidae) in Panama’s national parks: 2017 survey results, Zootaxa 4565 (3), pp. 407-419 : 413-414

Anacroneuria magnirufa Jewett

( Figs. 1–6 )

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:1842

Anacroneuria magnirufa Jewett, 1958: 162 . Holotype ♀ (American Museum of Natural History), El Volcán, Chiriquí, Panama Anacroneuria magnirufa , nec Stark 1998: 572 (Costa Rican specimens)

Adult habitus. General body color brown. Head yellow with a brown mustache-shaped mark arching laterally from ocelli ( Fig. 1 ), sometimes interrupted medially between ocelli. Pronotum brown with yellow mesal band varying from narrow to wide ( Fig. 1 ) Femora yellowish, tinged with brown, tibia yellowish, distinctly banded with dark brown proximally, distally brown, tarsi brown. Wing membrane hyaline, veins brown.

Male. Forewing length 20–22 mm. Hammer absent ( Fig. 2 ). Aedeagus apex simple, scoop-like ( Figs. 3–5 ), broadly rounded at apex, shoulders slightly developed ( Figs. 3, 4 ); ventrally, subapically with triangular darker sclerotization ( Fig. 4 ). Dorsal keel weakly developed ( Fig. 4 ). Hooks slender ( Fig. 4 ).

Female. Forewing length 20–22 mm. Subgenital plate broadly bilobed, margin truncate to slightly rounded. Mesal notch shallow. Transverse sclerite absent from sternum 9 ( Fig. 6 ).

Larva. Unknown.

Material examined. PANAMA: Veraguas Province, Santa Fe National Park, Cuenca 0 97 , Río Piedra de Moler , PSPSCD-PNSF-C097-2017-011, 8.55343°N and 81.17°W, 395 m, trampa de luz, A. Cornejo, E. Álvarez, T. Ríos, and C. Nieto, 20 April 2017, 1 ♀ (COZEM); same except, Cuenca 132, Río Mulaba-2do Brazo, PSPSCD- PNSF-C132-2017 - 007 , 8.52577°N and 81.13045°W, 623 m, trampa de luz, A. Cornejo, T. Ríos, C. Nieto, 20 April 2017, 1 ♀ ( COZEM) . Chiriquí Province, Guadalupe Arriba, N 8°52’26”, W 82°33’13”, 11–17 Sept. 1985, H. Wolda, 2 ♂ ( BYUC); Volcán Barú National Park, Cuenca 108, Quebrada Cascante , PSPSCD-PNVB-C108- 2017-018, 8.84939°N and - 82.49349°W, 1947 m , trampa de luz, E. Álvarez, E. Pérez, and T. Ríos, 8 May 2017, 1 ♂ and 1 ♀ ( COZEM). La Amistad International Park, Cuenca 102, Río Candela , Jurutungo , PSPSCD-PILA- C102-2017-020, 8.899689°N and 82.73786°W, 1728 m , trampa de luz, E. Álvarez, E. Pérez, and T. Ríos,19 June 2017, 1 ♀ ( COZEM); same except, Río Candela, Finca Félix, PSPSCD-PILA-C102-2017-021, 8.90614°N and 82.72882°W, 1799 m, trampa Malaise, E. Álvarez, T. Ríos, and E. Pérez, 01–05 September 2017, 1 ♀ ( COZEM); same except, Río Candela , Finca del Sr. Guillén , PSPSCD_ PILA-C102-2017 - 026 , 8.9104°N and 82.72054°W, 1957 m, trampa de luz, E. Álvarez, T. Ríos, and E. Pérez, 4 September 2017, 1 ♀ ( COZEM) .

Diagnosis. Using the key in Stark (1998), the presence of a yellow median pronotal band, the lack of a hammer, and a wing length of 20–22 mm, the male readily runs to “ A. magnirufa ”. However, the aedeagus of the true A. magnirufa lacks the narrower apex and the thin transverse ridge. Additionally, the dorsal head patterns differ. The complete lack of a hammer of this species is shared by two other Central American species, A. brava Mayorga and Contreras-Ramos, 2017 from Mexico ( Mayorga and Contreras-Ramos 2017), and the A. tuberculata sp. n. from Costa Rica. The dark coloration and the distinctive aedeagus of A. brava easily distinguish this species from both A. magnirufa and A. tuberculata .

Comments. Jewett (1958) described A. magnirufa based on a female adult holotype from Chiriquí Province, El Volcán, Panama. The male ‘allotype’ and a male paratype were from Honduras. Stark (1998) treated A. magnirufa based on specimens from Costa Rica, noting however, that the Panamanian males “are larger and have a slightly wider aedeagal apex and less conspicuous dorsal keel than Costa Rican specimens.” Additionally, the subgenital plate of the species being provided a new name below has a mesal tubercule near the subgenital plate notch ( Stark 1998, fig. 144). The subgenital plate of all Panamanian females of A. magnirufa examined in this study lacked this tubercle ( Fig. 6 ).

Figures

FIGURES 1–6. Anacroneuria magnirufa male., 1. Head and pronotum. 2. Male sternum 9 without hammer. 3. Aedeagus, dorsal. 4. Aedeagus, ventral. 5. Aedeagus, lateral. 6. Female sterna 8 and 9.