Eudeferunda alatea, Long, Jian-Kun, Yang, Lin & Chen, Xiang-Sheng, 2013

Long, Jian-Kun, Yang, Lin & Chen, Xiang-Sheng, 2013, A review of the Oriental genus Eudeferunda Chen, Yang & Wilson (Hemiptera, Fulgoromorpha, Achilidae) with description of one new species from Hainan, China, ZooKeys 313, pp. 1-8 : 2-4

Eudeferunda alatea sp. n. Figs 1-18

Type material.

Holotype: 1♂, China: Hainan, Ledong, Jianfengling National Natural Reserve (18°41'N, 108°36'E), 16 Jan. 2011, J.-K Long. Paratypes: 1♂, 3♀♀,Hainan, Ledong, Jianfengling National Natural Reserve (18°41'N, 108°36'E), 13-16 Jan. 2011, J.-K Long; 1♀, Hainan, Ledong, Jianfengling National Natural Reserve (18°41'N, 108°36'E), 14 Jan. 2011, W.-B. Zheng (IEGU).

Etymology.

The species name is derived from the Latin word “alate”, indicating the phallobase with a pointedly alate process at base 1/3 of each lateral side.

Description.

Body length (from apex of vertex to tip of forewings): male 3.75- 3.80 mm (N=2), female 4.50-4.75 mm (N=4); forewing length: male 2.95-3.05 mm (N=2), female 3.55-3.75 mm (N=4).

Coloration. Ivory white to black brown (Figs 1-9). Vertex ivory white, with black brown at base, longitudinal black brown stripe, gradually narrowing forward (except middle carina light brown) in middle, anterior and lateral margins brown, lateral margin with two transverse black brown stripes respectively at the level of anterior margin of eyes and base (Fig. 7). Frons with disk in middle black brown, basal and apical fourth ivory white, lateral margins with three big and one small fuscous spots (Fig. 8). Postclypeus with basal half ivory-white and apical half fuscous; preclypeus light brown except the base fuscous (Fig. 8). Genae ivory white, with three fuscous transverse stripes before eyes, two dorsad, area between ocellus and antenna fuscous, genae coloration at level of clypeus same the face (Fig. 9). Eyes reddish brown, ocelli pale reddish-brown (Fig. 9). Antennae fuscous (Figs 7-9). Pronotum dark brown, area between out side of two lateral carinae ivory white; mesonotum dark brown, with yellowish brown at apical angle (Fig. 7). Tegula dark brown, with dorsally lateral margin yellowish brown (Fig. 7). Forewing yellowish brown to dark yellowish brown, costal margin with three ivory white spots, clavus with three ivory white spots inside A2 and one longitudinal ivory white stripe between A2 and posterior margin (Fig. 10). Hindwing pale brown, veins pale brown. Legs pale brown (Figs 2, 4, 5-6). Abdomen dark brown.

Head and thorax. Head with eyes narrower than pronotum (0.81:1) (Fig. 7). Vertex long, broad across base than anterior (5.00:1), produced before eyes about 0.36 times of its length, width of vertex measured at base of middle line 0.66 times length along middle, longer in middle line than wide at base (1.41:1). Frons longer in middle line than widest part (1.25:1), basal margin subtruncate, middle carina gradually weakening basally (Fig. 8). Postclypeus shorter than frons in middle line (0.42:1) (Fig. 8). Rostum with apical segment longer than subapical one (1.47:1). Pronotum shorter than vertex in middle line (0.31:1). Mesonotum longer than pronotum in middle line (6.8:1), than vertex and pronotum together (1.61:1) (Fig. 7). Disc of tegula with several small longitudinal ridges (Fig. 7). Forewing 2.93 times as long as broad (Fig. 10). Hindwing 1.78 times as long as broad (Fig. 11).

Male genitalia. Anal segment in dorsal view slightly shorter than broad (0.90:1), basal margin slightly sinuate and angular laterally, apical margin concave (Fig. 12). Medioventral processes of pygofer paired, with apex distinctly attenuate and bent towards outboard, median cleft deep (Figs 13-14). Dorsal margin of gonostyle with a small dentiform process dorsad and a large triangular process laterad, thence laterad convex near base, apical margin broadly convex (Figs 15-16). Male genitalia with phallobase in ventral view (Fig. 17), ventral lobe cleft at apical margin in middle, bilateral areas hump-shaped and protuberated subapically, a pointedly alate process at base 1/3 of each lateral side, with its base of inside margin denticulated and apically extended; in dorsal view (Fig. 18), dorsal lobe with apical margin broadly incised in middle, bilateral margin ox-horn like produced. Phallic appendages longer than phallobase (3:1), gradually narrowing apically (Figs 17-18).

Distribution.

South China (Hainan).

Remarks.

This new species differs from Eudeferunda lenita Chen, Yang & Wilson, 1989 by: mesonotum dark brown, only with yellowish brown at apical angle (between lateral carinae white in lenita); forewing with three ivory white spots along costal margin (ivory white area among costal cell, Sc+R, and stigma in lenita); disk of tegula with several small longitudinal ridges (without in lenita); male pygofer of medioventral processes with apex distinctly attenuate and bent towards outboard (digitate and gradually narrowing apically in lenita); anal segment in dorsal view with basal margin slightly sinuate and angular laterally (base margin truncate and blunt laterally in lenita); ventral lobe of phallobase with a couple of lateral processes at base 1/3 (near apex in lenita).