Kodaianella Fennah, 1956 (type designated by Wang et al. 2016: 232).

Dentatissus brachys Chen, Zhang & Chang, 2014, by original designation.

Recognized by general coloration of body brownish to fuscous; coryphe quadrated, not elongated (Fig. 1A, B); anal tube with the maximum width near middle in dorsal view and phallic complex with two ventral aedeagal hooks (Figs 2E–G, 4A–C); genital style with long tooth at base of capitulum (extracted from Chen et al. 2014 and Chang et al. 2020).

Figure 1. 

Holotype habitus of Dentatissus longispinosus sp. nov. A dorsal view B lateral view C metope, anteroventral view D, E right forewing and hindwing observed in alcohol, respectively. Scale bars: 1.0 mm (A, B, D, E); 0.5 mm (C).

Figure 2. 

Male genital structures of Dentatissus longispinosus sp. nov. A genitalia, lateral view B anal tube, dorsal view C pygofer, lateral view D genital style, lateral view E–G phallic complex in dorsal, lateral, and ventral view, respectively. Scale bars: 0.5 mm (A–G).

Korea (South Chungcheong*, South Gyeongsang Province), China (North, Northwest, East, Southwest, South-central regions) (Fig. 5).

Recognized by overall coloration brownish; forewing with fuscous markings developed irregularly, contrasted with background (Fig. 1A, B). Metope without markings, lower half concolorous (Fig. 2C). Phallic complex having two pairs of ventral aedeagal hooks, third pair not developed; upper pair developed horizontally and lower diverging to middle, attached to aedeagus (Figs 2E–G, 4A–C). Anal tube convex apically (Fig. 2B).

Male. Coloration. General coloration of body brown; Coryphe concolorous with background, median carinae lighter than background; Pronotum yellowish-brown, half to posterior margins darker than background distinctly; mesonotum yellowish-brown, with fuscous markings between median and lateral carinae (Fig. 1A, B); Metope concolorous with background, all margins with yellowish spots irregularly, lateral margins with fuscous and contrast with background; rostrum darker than background. Gena concolorous with background (Fig. 1C). Forewing of veins darker than background, with fuscous markings developed irregularly (Fig. 1A, B). Legs darker with background generally, joints lighter than background (Fig. 1B). Female. Same as male in general features, body relatively larger than male.

Surface and vestiture. Body without wax layer, rough.

Head. Head with compound eyes roundly ovate, larger than pronotum distinctly; Coryphe at base concaved, length shorter than width at midline, apex angulated and slightly protruded after compound eyes, median carinae well-developed (Fig. 1A). Metope ovate, lateral keels protruded and rounded in ventral view, widest at middle, median carina present, margins with postclypeus concaved. Postclypeus and anteclypeus with weak median carina, lateral carinae absent. Antennae short, clavated. Compound eyes semicircular; ocelli absent (Fig. 1C).

Thorax. Pronotum triangular, length longer than width; anterior margins longest at middle, posterior margin slightly concave at midline; median and lateral carinae developed weakly. Mesonotum triangular, length shorter than width, posterior margins pointed; median and lateral carina visually developed (Fig. 1A). Forewing irregularly ovate. Pcu and CuP reaching apical margins, CuA dividing at almost hind margins, Mp and Rp dividing at almost 1/3 (Fig. 1D); Hindwing as long as forewing, trilobed (Fig. 1E).

Male genitalia. Pygofer in lateral view slightly wide basally, margins irregularly (Fig. 2C); Phallic complex long and symmetrical, complex endosome arising widely at apex (Figs 2E, G, 4A, C). Two pairs of ventral aedeagal hooks developed at ventral; the upper pair strongly curved to upward and surpassing aedeagus; the lower curved and not surpassing aedeagus (Figs 2F, 4B); genital style roundly widest at basal, pointed at apical; anterior margins simply protruded at middle, blunt; capitulum of style spinous, curved to ventrally (Fig. 2D); Anal tube in dorsal view, ovate and convex apically; anus placed at middle, anal column small, not reaching the posterior margin (Fig. 2B).

Female genitalia. Gonapophysis VIII partly flattened; dorsal margins almost straight, with sharp apex and well visible teeth at posterodorsal margin (Fig. 3E). Gonapophysis IX in lateral view, slightly curved to dorsally, apical pointed (Fig. 3F); in dorsal view, with two pointed bumps at apical, posterior connective lamina sclerotized (Fig. 3G). Sternum VII with lateral lobes developed, median portion narrow; anterior margins almost straight; posterior margins with two triangular bumps, median portion deeply concaved (Fig. 3H). Anal tube elongated, with numerous setae developed; anus placed basal, anal column short and not surpassing the median portion (Fig. 3B). Gonoplac oval, widest at middle (Fig. 3D).

Figure 3. 

Female genital structures of Dentatissus longispinosus sp. nov. A female genitalia, lateral view B anal tube, dorsal view C female genitalia without sternum VII, caudal view D gonoplac, lateral view E gonapophysis VIII, lateral view F gonapophysis IX, lateral view G ditto, ventral view H sternum VII, ventral view. Scale bars: 1.0 mm (A); 0.5 mm (B–H).

Male (N = 2)/Female (N = 2). Body length (including forewing): 4.91–4.94/5.53–5.55; body width (including forewing): 2.51–2.53/2.72–2.75.

Figure 4. 

Male phallic complex illustrations of Dentatissus longispinosus sp. nov. A dorsal view B lateral view C ventral view. Scale bars: 0.5 mm (A–G).

[CNU] Holotype: 1♂, 20 Aug 2021, Gung-dong, Yuseong-gu, Daejeon, Republic of Korea. JK Park, sweeping on Acer palmatum; Paratype: 1♂ 2♀♀. Same data as holotype male.

This species is named after the elongated processes on the phallic complex.

Korea (South Chungcheong Province) (Fig. 5).

Figure 5. 

Distribution map of the genus Dentatissus species in East Asia.

Acer palmatum (Sapindaceae).