Caledonotrichia sykorai, Wells, Alice, Johanson, Kjell Arne & Mary-Sasal, Nathalie, 2013

Wells, Alice, Johanson, Kjell Arne & Mary-Sasal, Nathalie, 2013, The New Caledonian genus Caledonotrichia Sykora (Trichoptera, Insecta) reviewed, with descriptions of 6 new species, ZooKeys 287, pp. 59-89 : 84-85

Caledonotrichia sykorai sp. n. Figs 1759 –6067– 6873

Diagnosis.

Closely resembling Caledonotrichia nyurga , but males differing in having the posterior margin of sternite IX only shallowly concave, the anterior extension of abdominal segment IX shorter and broader; and gonopods with ventral lobes narrower and dorsal lobes stout, as wide at apex as close to base; both Caledonotrichia sykorai and Caledonotrichia nyurga can be separated from Caledonotrichia extensa by their smaller size and presence of the elongate ventral process on the posterior margin of sternite VII. Females have the apical margin of abdominal sternite VII rounded, without the membranous collar seen in Caledonotrichia illiesi and Caledonotrichia minuta .

Description, male, female.

Head rounded, as in Caledonotrichia capensis (Fig. 1). Antennae (Fig. 17) with 24-25 flagellomeres, of form seen in Caledonotrichia illiesi and most other species of Caledonotrichia with flagellomeres elongate cylindrical. Maxillary palps similar to those in males of Caledonotrichia nyurga , but terminal segment shorter, relatively, but still exceeding length of segments 3 or 4 which are subequal.

Wings. Forewing length, 2.2-2.8 mm (n=5).

Male genitalia (Figs 59, 60, 67, 68). Posterior margin of abdominal sternite VII bearing elongate triangular, mesal process. Abdominal segment IX ventrally subquadrate posteriorly, anteriorly rounded triangular; dorsally with deep parallel-sided excision. Tergite X convex apically. Sclerotised rods of ventral processes stout, simple. Gonopods with ventral lobe in form of narrow filaments, dorsal lobes stout, without mesal processes. Ventral processes stout, strongly curved at base. Phallic apparatus with associated slender parameres.

Female terminalia (Fig. 73). Forming a slender, telescopic oviscapt, but lacking the medial process on sternite VII seen in Caledonotrichia illiesi and Caledonotrichia nyurga .

Material examined.

Holotype male: New Caledonia: Province Sud, stream crossing way to sanatorium 2.3 km E St Laurent, ca. 150 m upstream bridge, 22°04.484'S, 166°19.910'E, loc 027, Malaise trap, 17-19.x.2006, K. A. Johanson & M. Espeland (NHRS).

Paratypes: New Caledonia: 6 males, 30 females, Province Sud, Col d’Amieu, 319 m, small stony river, loc 23, 21°34.720'S, 165°49.620'E, Malaise trap, 30. xi– 5.xii.2001, Johanson, Pape & Viklund (NHRS); 2 males (on slides), Province Sud, Monts des Koghis, ca 800 m S Koghi Restaurant, 22.18406°S, 166.50383°E, 420 m, 11-26.xi.2003, Malaise trap, loc#022, K. A. Johanson (NHRS); 1 male, 1 female, Province Sud, Hwa Hace Mt., Hwa Motu River, at Pont Wamuttu, 1.0 km E Nassirah, about 200 m upstream bridge, 21°48.094'S, 166°04.298'E, 137 m, 20. xi– 12.xii.2003, Malaise trap, loc#034, K. A. Johanson (NHRS); 4 males, 4 females (2 males 1 female on slide), Province Sud, stream crossing way to sanatorium 2.3 km E St Laurent, ca. 150 m upstream bridge, 22°04.484'S, 166°19.910'E, loc 027, Malaise trap, 17-19.x.2006, K. A. Johanson & M. Espeland (NHRS).

Etymology.

Sykorai, named for Dr Jan Sykora, who described the first two species in this genus.

Key to adult males of Caledonotrichia