Antarctoperlinae Enderlein 1909

• Main Authors: McLellan, Ian D., Zwick, Peter
• Format: Other/Unknown Material
• Language: unknown
• Published: 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Plecoptera; Gripopterygidae; Argentina; Antarc*
• Online Access: https://zenodo.org/record/4762006; https://doi.org/10.5281/zenodo.4762006

Antarctoperlinae gen. sp. II (Figs. 24 ‐ 29) Material examined. 2 LA, Argentina, Neuquen, Rio Litran, 5 km. N. Lago Alumine 1 March.1978 CMF & OSF; 8 LA, Argentina, Neuquen, Ao. Purumeco, NW Lago Alumine 1 March 1978 CMF & OSF; 1 LA, Chile, Malleco, small stream 20 km E. Liucura, 1750 m, 4 February 1987, CMF & OSF, (February 97 in LFS); 1 LA, Argentina, Neuquen, small stream, 10 km S. Pino Hachado, 4. February 1987, CMF & OSF, (February 97 in LFS); 4 LA, Chile, Malleco Prov., Cordillera de las Raices, 37 km E Curacautin, 5 ‐ 6 February 1979, 1100 m, DD, MD & DA (97 in LFS ) 39 LA, Chile, Malleco, small stream, 9 km W Lonquimay, 5 February 1987, CMF & OSF (3 remain as duplicates in LFS). 8 LA “9/12 o” among unsorted material in coll. Illies, locality and date unknown. Dimensions. Larva (last instar): body length 12.5 ‐ 13.0; antenna 7.0; cerci 2.5. Larva. Dark brown, muscle attachments on head and thorax darker. Scape and pedicel plus some flagellar segments (about segments 7 ‐ 12) darker brown than rest of antenna. Similarly, tip of first cercus segment and the next 6 ‐ 8 segments distinctly darker brown than rest of cercus. Clothed with short dark procumbent setae (Fig. 25) except side edges of thorax and caudal edges of abdominal segments which have setal fringes as described below. Head: Massive, dorsal face flat, occipital area strongly downcurved. Eyes large, no ocelli. Central depression shallow, indistinct. Unpaired cephalic suture long, branches initially diverging at right angle, then bent abruptly sidewards, meeting inner edge of eyes and curving forward alongside them, behind antennae. Frons descending stepwise to clypeus, labrum with large articulation membrane. Genae as high as the large antennal scape and cut off and rounded level with the scape. Mouthparts similar to Antarctoperlinae gen. sp. I. Antennae about half as long as body, scape large, pedicel dark, basally strongly constricted. Base of flagellum distinctly expanded, segments on wide part of flagellum very short ...