Nyctiophylax (Paranyctiophylax) dactylatus n. sp.

(Fig. 2)

Diagnosis. This new species is very similar to Nyctiophylax (Paranyctiophylax) sagax (Mey 1995) from Vietnam. It differs in that the preanal appendages are shorter than tergum X and the phallus lacks any spines. In contrast, the preanal appendages of N. (P.) sagax are longer than tergum X and the phallus of that species has a complicated, serrate, longitudinal, subapicoventral “cornutus” of tiny spines.

Male. Length of each forewing 5.6 mm (N=1). Head yellowish brown with dark yellowish antennae, pronotum light brown, meso- and metanota brown, forewings brown.

Male genitalia. Segment IX triangular anteriorly and nearly straight posteriorly in lateral view (Fig. 2A); in ventral view segment IX narrowed anteriorly with semicircular excision 1/4 as deep as length of sternum, posterior margin with broad and shallow concavity (Fig. 2C); dorsal region of segment IX semi-membranous, rectangular (Fig. 2B). Preanal appendages each forming laterally compressed and horizontal lobe, in lateral view (Fig. 2A) two times as long as its middle width, broad at base with remainder nearly parallel-sided, tip obliquely truncate; mesoventral process long and stout, broad at base, with apex tapered and curved ventrad, bases of opposing processes meeting each other under phallus (Fig. 2D). Tergum X in lateral view long and tall, length 1.3 times height with apicoventral ends triangularly protruded (Fig. 2A); in dorsal view transparent, semi-sclerotized, deeply divided apicomesally (Fig. 2B). Inferior appendages erect, dorsocaudally olbique in lateral view, each narrowing in distal 1/4 to acute tip; in ventral view, its dorsal edge strongly extended mesad as broad lobe with tip obliquely truncate and with finger-shaped process on inner margin near middle (Fig. 2C); basomesal setose lobe small, bluntly triangular, concealed in lateral view by base of appendage, concealed or barely visible ventrally (Fig. 2C). Phallus tubular, with pair of laterally compressed and oval protrusions laterally near base and pair of long, needlelike parameres, phallicata without tiny spines (Fig. 2A).

Holotype male. Guang-dong Province: Xin-yi County, Da-cheng Town, Da-wu-ling Nature Reserve, upstream of the stream at the entrance of Reserve, N 22°16'08", E 111°11'48", alt. 1110 m, 26 May 2004, Coll. Sun C-h.

Etymology. Greek, dactylatus = digitate or finger-like, with reference to the finger-shaped process on the inner margin of each inferior appendage in ventral view.

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