Nyctiophylax (Paranyctiophylax) crinalis, Zhong & Yang & Morse, 2014

Zhong, Hua, Yang, Lian-Fang & Morse, John C., 2014, The genus Nyctiophylax Brauer in China (Trichoptera, Polycentropodidae), Zootaxa 3846 (2), pp. 273-284 : 274-275

Nyctiophylax (Paranyctiophylax) crinalis n. sp.

( Fig. 1 )

Diagnosis. This new species is very similar to N. suthepensis Malicky & Chantaramongkol 1993 from Thailand. It differs in that Nyctiophylax (Paranyctiophylax) crinalis n. sp. has the inferior appendages with their inner margins each bearing a row of long strong setae in ventral view, its basomesal setose lobe is semicircular in both lateral and ventral views and in ventral view this lobe is strongly sclerotized and broader than its main body. On the other hand, N. suthepensis has the inner margin of each inferior appendage without a row of long strong setae and the basomesal setose lobe is oval in ventral view and narrower than its main body. Another difference between the two species is that the phallus of the new species has a pair of long, needle-like parameres, at least as long as the phallus, and the phallicata is without any short spines, while N. suthepensis has thick parameres only half as long as the phallus and the phallicata has some additional short spines.

Male. Length of each forewing 4.2–4.8 mm (N=16). Head light brown with dark yellowish antennae, pronotum light brown, meso- and metanota brown with warts light brown, forewings brown.

Male genitalia. Sternum IX in lateral view nearly quadrangular, posterior margin protruding at middle and forming 135° angle ( Fig. 1A ); in ventral view anterior margin excised in U-shape with depth of 1/3 length of sternum, posterior margin with broad and very shallow concavity ( Fig. 1C ); dorsal region of tergum IX membranous, trapezoidal ( Fig. 1B ). Preanal appendages broad at base in lateral view, each approximately 2 times its middle width, apex obliquely truncate; basal half of mesoventral process broad, distal half acute and horn-like, directed downward. Tergum X long and tongue-like in lateral view; transparent, semi-sclerotized, with V-shaped incision apicomesally in dorsal view ( Fig. 1B ). Inferior appendages each about 7 times as long as its mid width in lateral view, slightly clavate, narrowed at middle, with basomesal setose lobe semicircular in lateral view ( Fig. 1A ); in ventral view each inferior appendage nearly parallel-sided, with inner margin bearing row of long thick setae, basomesal setose lobe strongly sclerotized, semicircular, broader than main body, with rounded apex ( Fig. 1C ). Phallus tubular, with pair of compressed oval protrusions laterally near middle; pair of parameres long, needle-like; phallicata without spines.

Holotype male. Guang-xi Province : Shang-si County, Mt. Shi-wan-da-shan National Forest Park , Shi-tou River , tributary of Ming-jiang River , 1.35 km SW of main entrance to Park, N 21.9022°, E 107.9046°, alt. 300 m, 05 Jun 2004, Coll. Yang L-f. and C.J. Geraci.

Paratypes: Guang-xi Province : same data as holotype, 89 males . Shang-si County: Mt. Shi-wan-da-shan National Forest Park, fourth trib of Shi-tou River , 3.8 km SW of main entrance to Park, N 21.8914°, E 107.9047°, alt. 420 m, 06 Jun 2004, Coll. J.C. Morse and Sun C-h., 6 males ; Na-lin River , tributary of Ming-jiang River , 2.0 km NW of main entrance to Mt. Shi-wan-da-shan National Forest Park, N 21.9070°, E 107.8966°, alt. 281 m, 05 Jun 2004, Coll. J.C. Morse and Sun C-h., 15 males ; Mt. Shi-wan-da-shan National Forest Park, Shi-tou River at second tributary, 3.4 km SW of main entrance to Park, N 21.8920°, E 107.9073°, alt. 392 m, 06 Jun 2004, Coll. Yang L-f. and C.J. Geraci, 3 males . Long-lin County: Mt. Jin-zhong shan, Provincial Forest Preserve, Duo-gui Gou, 1.5 km N of Xi-she Village, N 24.5824°, E 104.9141°, alt. 1145 m, 11 Jun 2004, Coll. J.C. Morse and Sun Ch., 2 males .

Etymology. Greek, crinalis = of hair, with reference to the inner margins of the inferior appendages each bearing a row of long thick setae in ventral view.

Distribution. Oriental Biogeographic Region of China: Guang-xi.

Figures

FIGURE 1. Nyctiophylax (Paranyctiophylax) crinalis n. sp. male genitalia. A, left lateral; B, dorsal; C, ventral; D, phallus, left lateral. b.m.l. = basomesal setose lobe of an inferior appendage; inf.app. = inferior appendage; m.v.pro. = mesoventral process of a preanal appendage; para. = paramere; pre.app. = preanal appendage; s.IX = sternum IX; t.IX = tergum IX; t.X = tergum X.