Longieusarima lunulia Zhang 2017, sp. nov.

Longieusarima lunulia sp. nov.

Diagnosis. This new species can be identified by these particular characters in Sarimini: 1) Vertex 1.0 times wider at base than long in midline (Fig. 29); 2) Lateral angles of frons angularly expanded outwardly, median area with one light yellow curved transverse marking on the disc (Fig. 30); 3) Forewing with ScP+RA vein extending to the middle of forewing, the first fork of MP vein distinctly separate before CuA vein (Fig. 28).

Description. Length: male (including forewings) (N=5): 6.3–7.0 mm; female (including forewings) (N=1): 7.3 mm.

Vertex tawny, 1.0 times wider at base than long in midline, apical half light yellow in midline; anterior margin carinated and black; lateral margins carinated with apical half brown, basal half white; posterior margin elevated and white (Figs. 27, 29). Frons tawny, 1.0 times longer in midline than widest part, 1.6 times broader at widest part than apical margin; anterior and lateral margins carinated and brown, sublateral carinae brown, median carina tawny; median part with one broad light yellow meniscus shaped transverse band (Fig. 30). Frontoclypeal sulcus brown (Fig. 30). Postclypeus tawny (Fig. 30). Compound eyes grayish white, supported by tawny callus (Fig. 29). Gena brown, in lateral view with one yellow oblique transverse band (Fig. 28). Pronotum tawny, 2.5 times wider at base than length in midline, anterior and posterior margins carinate and brown (Figs. 27, 29). Mesonotum tawny, anterior margin 1.5 times wider than long in midline, apical half of midline light yellow (Figs. 27, 29). Forewings tawny, 2.8 times wider at longest part than widest part, longitudinal veins reddish brown, with several light yellow transverse veins (Figs. 28, 31). Hind wings grayish brown (Fig. 32). Legs tawny (Fig. 30). The color described above from specimens taking out from alcohol.

Male terminalia. Anal tube in lateral view long and slender, reaching the posterior margin of gonostyli, dorsal margin of anal tube curved downward near middle, ventral margin almost straight (Figs. 33, 38); in dorsal view long cylindrical, widest at basal 1/3, 2.6 times longer in midline than widest part, apical margin rounded, lateral margins almost parallel in apical half; epiproct short, located at basal 1/3 of anal tube (Fig. 34). Gonostylus triangular in lateral view, widest at apical 1/3, dorsal and posterior margins nearly straight, caudo-ventral angle rounded, the apex of dorsal margin near to base of capitulum with auriform structure (Figs. 35, 38). Capitulum of gonostylus finger-shaped, directed to apex (Fig. 35). Pygofer in lateral view large and broad, apical part much narrower than basal part, 2.0 times wider in ventral margin than dorsal margin, posterior margin gradually broadened from apex to apical 1/6, then apparently caudad convex (Figs. 33, 38). Periandrium in lateral view with dorsal and ventral margins almost parallel,. Aedeagus with pair of long acute processes under the ventral margin directed cephalad, derived from apical 1/9 ventrally reaching basal 1/3 of periandrium (Figs. 36, 38), directed outward in ventral view (Fig. 37). Periandrium with apical part rounded, divided into dorsal lobe, pair of lateral lobes and ventral lobe of approximately equal length fused together, dorsal lobe with triangular processes directed dorsad apically (Figs. 36, 38).

Female terminalia. Anal tube in dorsal view long cylindrical, 1.9 times broader in midline than widest part, apical margin rounded, lateral margins almost parallel at apical 2/3, basal 1/3 expanded outwardly, anal opening situated at base (Fig. 41). Anterior connective lamina of gonapophysis VIII with one tooth at apex, outer lateral margin and inner lateral margin without teeth (Fig. 47). Endogonocoxal process membranous and developed, reaching the same level with anterior connective lamina, obvious and angular expanded near base (Fig. 47). Posterior connective lamina of gonapophysis IX in lateral view triangular, narrowing from base to apex, carries a large triangular structure on its top (Fig. 45), triangular structure in ventral view with apical margin concave at middle, rough at middle, posterior connective lamina of gonapophysis IX in ventral view with small spinous process directed outward at apical 1/3 (Fig. 43). Gonospiculum bridge rectangular (Fig. 45). Gonoplac rounded in lateral view (Fig. 44), in dorsal view widest at basal half, fused at middle near base (Fig. 42). Hind margin of sternite VII almost straight at middle (Fig. 46).

Type materials. Holotype: ♂, China, Hainan, Jianfengling, Chahekou, N 18° 44.727’, E 108° 59.632’, 235 m, 17 viii 2010, coll. Guo Zheng (IZCAS). Paratypes: 4♂♂ 1♀, the same data as holotype (IZCAS).

Etymology. Latin word “ lunulia ”, means falcate, referring to the yellowish falcate transverse marking on the middle of frons.