Nyctiophylax (Paranyctiophylax) macrorrhinus, 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 : 278-279

Nyctiophylax (Paranyctiophylax) macrorrhinus n. sp.

( Fig. 4 )

Diagnosis. This new species is very similar to N. zadok Malicky & Chantaramongkol 1993 from Thailand. It differs in that 1) the apical 1/3 of each inferior appendage is acute, horn-like and curved mesad in ventral view; 2) the preanal appendages are shorter than tergum X and the mesoventral process of each preanal appendage is slender and arched in a semicircle in lateral view, with a dorsoventrally depressed apex ( Figs. 4A, 4D ); and 3) the pair of phallic sclerites are slender, generally straight and only slightly sclerotized. In N. zadok , 1) each inferior appendage is straight, with a blunt apex; 2) the preanal appendages are much larger and longer than tergum X, each having its mesoventral process triangular with an apex acute in lateral view; and 3) the phallic sclerites are stout, horn-like, and strongly sclerotized.

Male. Length of forewing 4.0– 5.4 mm (N = 10). Head brown with yellowish antennae, pronotum light brown, meso- and metanota brown, fore wings light brown.

Male genitalia. Segment IX in lateral view with triangular protrusion anteriorly in ventral half but with round production posteriorly ( Fig. 4A ); in ventral view both anterior and posterior margins each with deep concavities such that midline of venter IX only 1/2 as long as segment ( Fig. 4C ); dorsal region of segment IX nearly membranous, sub-quadrate in dorsal view. Preanal appendages in lateral view ( Fig. 4A ) each broad at base with rounded apex not passing beyond apex of tergum X; mesoventral processes slender and arched in semicircle; in ventral view ( Fig. 4D ) much broader basally, nearly meeting on midline to support phallus, but not fused with each other, depressed apically. Tergum X in lateral view with each half divided into two lobes: upper lobe setose and apically beak-like, lower lobe smooth with blunt apex bearing 2 setae ( Fig. 4A ); in dorsal view ( Fig. 4B ) transparent, semi-sclerotized, with deep U-shaped incision apicomesally. Inferior appendages broad in lateral view ( Fig. 4A ), each broad at base, gradually narrowing to acute apex; in ventral view ( Fig. 4C ) apical 1/3 curved mesad with acute horn-like apex and with thin, translucent, triangular mesal edge. Phallus tube-like, with pair of long, stout and straight paramere spines; phallic sclerites slender, narrow both anteriorly and posteriorly, generally straight and lightly sclerotized; lacking other spines ( Fig. 4A ).

Holotype male. An-hui Province :, Qi-men County, N 29.8°, E 117.7°, Peng-long-xiang, Xiang-dong-cun, 27 Sep. 2003, Coll. Shan L-n. and Sun C-h.

Paratypes. An-hui Province : Qi-men County, N 29.8°, E 117.7°, Li-xi River : Shuang-he-kou, Tao-yuan-li Tributary, 26 Aug. 2003, Coll. Sun C-h. and Shan L-n., 2 males ; same data except 26 Jun. 2003, Coll. Shan L-n. and Lu S., 6 males ; same data except at 50 m upstream of Shuang-he-kou, Tang-yun-li Tributary , 30 May 2002, Shan L-n. and Hu B-j., 1 male .

Etymology. Greek, macrorrhinus = big-beaked, with reference to the beak-like apices of the upper lobes of tergum X in lateral view.

Distribution. Oriental Biogeographic Region of China: An-hui.

Figures

FIGURE 4. Nyctiophylax (Paranyctiophylax) macrorrhinus n. sp. male genitalia. A, left lateral; B, dorsal; C, ventral; D, mesoventral processes of preanal appendages, ventral. inf.app. = inferior appendage; m.v.pro. = mesoventral process of a preanal appendage; para. = paramere; ph.s. = phallic sclerites; pre.app. = preanal appendage; s.IX = sternum IX; t.IX = tergum IX; t.X = tergum X.