Chaetopteryx akgolensis, Sipahiler, 2010

Sipahiler, Füsun, 2010, Two New Species of Chaetopteryx Stephens, 1837 from Turkey with a Description of the Unknown Female of C. bektasensis Sipahiler, 2008 (Trichoptera, Limnephilidae: Limnephilinae: Chaetopterygini), Psyche: A Journal of Entomology (180671) 2010, pp. 1-6 : 1-3

3.1. Chaetopteryx akgolensis Sp.n. ( Figures 1 and 2 )

Material. Holotype male and paratype female: Turkey, Sinop, Hanönü, Ayanıck direction, Çangal Mountain (CD: R-1251), 1130 m, a small spring near Akgöl , 41 ◦ 41 N, 34 ◦ 34 E, 3.x.2009; same place (CD: R-1262), 26.x.2009, 1 female, leg. and coll. Sipahiler.

Antennae, palps, legs, and wings pale brown; forewing with a white spot on the medial vein, and a larger one on anal vein 1 located near anastomosis and near the margin, respectively. Spur formula of male is 0.3.3, of female 1.3.3. Length of anterior wing of male 14.5 mm, of female 15– 15.2 mm.

Male Genitalia ( Figure 1 ). Spinulose zone of tergite VIII large; in dorsal view, the posterior and anterior edges almost straight and the sides rounded. In lateral view, the sides of segment IX are dilated on the anterior margin; the ventral part of segment IX is narrow. The preanal appendages are more or less rounded; in caudal view, the inner side of the apical edge with a large, almost rounded sclerotized

zone. The intermediate appendages are nearly quadrangular and covered with white-yellowish short hairs; in lateral view, the ventral edge is somewhat dilated subdistally, the apex with two small pointed projections. The supra-anal plate is very large and long, almost triangular, strongly sclerotized; in dorsal view, it is seen as a large lobe between the intermediate appendages. The inferior appendages are short; in lateral view, the posterior edge broadly rounded. In caudal view, the inner edges are sinuate, and the dorsal edges are straight. The phallic apparatus is large on the apical portion; in ventral view, the sides are almost smooth, with the apical edge deeply and roundly excised, forming rounded lobes on each side, which are sclerotized and covered with tubercles; the median part with a weakly sclerotized almost quadrangular plate; parameres long, strongly sclerotized, and each possesses a long and rather broad spine, which is curved subdistally inside, and has three small spines, located subdistally.

Female Genitalia ( Figure 2 ). In dorsal view, the dorsal part of segment IX is broadly and roundly excised, forming finger-shaped lobes on each side; the median part of this excision is broadly dilated; segment X is tube shaped, strongly sclerotized and located between the side lobes of segment IX; its dorsal part is deeply and roundly excised in the middle, and the sides of the excision are straight; the ventral part is longer than the dorsal part, and the apical margin is more or less straight, bearing short spines on the dorsal surface; in lateral view, the tube-like part of segment X is longer than the side lobes of segment IX, and the cavity is large. In caudal view, the median lobe of the vulvar scale is moderately large, apex rounded.

Remarks. Chaetopteryx akgolensis sp.n. is closely related to C. bektasensis Sipahiler, 2008 [ 3], but differs from this species by the following features: in C. bektasensis , the spinulose zone of tergite VIII is roundly dilated in the middle of the

apical edge; segment IX is broad on the ventral portion; in lateral view, the preanal appendage is elongate and dilated on the ventral edge, with the sclerite small and located on the inner corner, while in C. akgolensis sp.n., the apical edge of the spinulose zone of tergite VIII is broadly rounded. Segment IX is narrower ventrally, with the preanal appendage in lateral view shorter and almost rounded; the sclerite on the inner surface continues as a large band towards the base; the supra-anal plate of the related species is short and small but in C. akgolensis it is very large and long. Laterally, the inferior appendage of C. bektasensis is long, broad at the base, and narrowing towards the apical edge. In the new species, it is short and broad. The phallic apparatus of C. bektasensis , in ventral view, with a bilobed median portion, with the basal parts of the paramere not totally sclerotized. Laterally, there is a short finger-shaped lobe, bearing long spines, of which the inner one is longer than the others and the phallic apparatus. In C. akgolensis sp.n., the median part of the phallic apparatus is quadrangular, and the parameres are strongly and completely sclerotized, having no basal lobe. The longer sclerotized spine, located on the inner side, is as long as the phallic apparatus. Differences in the female genitalia are also evident. In C. bektasensis , the dorsal and ventral edges of the tube-like part of segment X are narrower, and the ventral edge is roundly excised in the middle, forming rounded lobes on each side. The cavity of the tube-like part is small; in the new species, the tube-like part of segment X is broad, the cavity is large, the dorsal edge roundly excised medially, the sides are straight, and the ventral edge is smooth.

Etymology. Named after the place where the type specimens were collected.

Figures

FIGURE 1: Chaetopteryx akgolensis sp.n., male genitalia: (a) lateral; (b) dorsal; (c) caudal; (d) phallic apparatus, lateral; (e) phallic apparatus, ventral.

FIGURE 2: Chaetopteryx akgolensis sp.n., female genitalia: (a) lateral; (b) dorsal; (c) ventral.