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; Antarc*
• Online Access: https://zenodo.org/record/4762011; https://doi.org/10.5281/zenodo.4762011

Antarctoperlinae gen. sp. III (Figs. 30 ‐ 35) Material examined. 1 LA, Chile, Magal., Penin. Cordova Ba.Borja 7. October.69 OSF; another larva from the same locality is additionally labelled “pond”; 2 LA (partly dissected, parts on slide), Chile, Magal., I. Desolacion, Pto. Churruca, 5 October 1969, OSF. Dimensions. Larva (final instar): body length 12.0 ‐ 13.0; antenna 6.0; cerci 1.5. Larva. A moderately slender species, uniformly light brown and shining; the larva appears to be hairless under the dissecting microscope, except for colourless short hair fringes along the front edge of the clypeus and the rear edge of tergite 10. However, when pieces of integument are studied with a compound microscope and under transmitted light, the body is found to be covered by very fine, colourless hairs. Hairs on tergites are curved and strongly tapered towards the tip, being almost whip like on basal segments. Apices of hairs along distal segment margins are strongly curved inwards, towards the body. Floriform chloride cells on intersegmental membranes at basal abdominal segments numerous, each resembling a goblet with long basal stalk. Head massive, simple, with distinct shallow central depression, eyes small, and ocelli indistinct. Antennae seemingly bare, with large squarish scape and narrow bell ‐ shaped pedicle; basal third of flagellum indistinctly inflated. Genae normal, simple; frons gently bulging down to the short clypeus, labrum trapezoidal, with narrow base. Sclerotised mouthparts worn, details of molar structure no longer visible, lacinial apex apparently with only a few blunt massive scoop ‐ like apical teeth. Galea longer than lacinia, with apical group of small rod shaped sensillae. Palpus simple, segment 4 a little shorter than both segments 3 and 5. Labium normal, except terminal segment of palpi wide, distinctly ovoid, fairly densely pilose. Thorax. Pronotum a little wider than long, the anterior angles a little produced forward but barely outward. Rear angles pronounced but blunt, not produced. Meso ‐ ...