Ricanula peronata, Zhang & Wang & Stroiński & Qin, 2021

Zhang, Huan, Wang, Wen-Qian, Stroiński, Adam & Qin, Dao-Zheng, 2021, Two new species and a new combination in the genus Ricanula Melichar, 1898 for Ricaniidae from China (Hemiptera: Fulgoromorpha), Zootaxa 5047 (3), pp. 353-369 : 363-366

Ricanula peronata sp. nov.

( Figs 7–9 , 11 )

Etymology. The name is derived from the Latin word ‘ peronatus ’, referring to the periandrium with boot-shaped ventral processes in ventral view.

Diagnosis. The species is similar to Ricanula curva sp. nov., but differs from the latter by having periandrium with boot-shaped ventral processes in ventral view ( Fig. 9F ); ventral processes of aedeagus oriented ventrally in lateral view ( Fig. 9G ) (apical part of ventral processes of periandrium strongly curved laterally in dorsal and ventral view; ventral processes of aedeagus S-curved in lateral view in Ricanula curva sp. nov.).

Description. Measurements. Length (inc. tegmen): male 6.5–7.4 mm, female 7.3–8.8 mm.

Head. Vertex ( Figs 7A, C ) without median carina. Frons: median and lateral carinae of frontal disc surpassing half of disc, ending about the level of antennae; apical parts of median carina weakly visible.

Thorax. Pronotum ( Figs 7A, C ) with small round depressions submedially on each lateral side. Mesonotum: lateral carinae ( Figs 7A, C ) not reaching posterior margin; antero-lateral carinae not connected with anterior margin.

Tegmen: postero-apical part of tegmen with two eye-spot black cells, posterior margin arcuate. Longitudinal veins ScP+RA and RP, MP arising as short common stem from basal cell. Claval veins Pcu and A 1 fused on midlength of CuP vein. Hind wing ( Fig. 7F ) without transverse veinlets.

Hing legs: Basitarsomere of metatarsus with 8 apical teeth. Metatibiotarsal formula 2/6/8.

Male terminalia. Anal tube (in dorsal view, Fig. 8B ) nearly square, posterior margin strongly concave, basal margin slightly convex, lateral margins straight; anus placed before midlength, paraproct surpassing the posterior margin. Pygofer (in lateral view, Fig. 8A ) with dorsal posterior angle without process. Genital styles (in lateral view, Fig. 8A ) broadly triangular; ventral margin weakly sinuate; dorsal margin weakly convex, with small concavity before spine-like process.

Phallic complex ( Figs 9A–C ): Periandrium ( Figs 9D–F ) with boot-shaped ventral processes in ventral view, apical part of ventral processes straight; dorsal periandrium with U-shaped structure with membranous apical part sclerotized base in dorsal view; lateral margin of periandrium with small rod-shaped processes in lateral view, rodshaped processes hidden in the periandrium (in ventral view); ventral periandrium distinctly convex.

Aedeagus ( Figs 9G–I ) apically with two pairs of processes. Median split asymmetrical: ventral split present only in 1/5; dorsal split very deep, reaching almost basal part. All processes single armed: lateral processes longer than ventral processes, about two thirds of aedeagus; ventral processes oriented ventrally in lateral view.

Female terminalia ( Figs 8C–I ). Pregenital sternite ( Fig. 8I ): posterior margin medially with two prominent processes, margin between processes with wide and shallow incision.

Anal tube (in dorsal view, Fig. 8C ) ovoid, with widest part medially, basal margin weakly convex, posterior margin widely concave, lateral margins arcuate; anus placed after midlength, paraproct surpassing the posterior margin.

Gonoplac ( Fig. 8H ): posterior margin with two rows of small teeth.

Coloration. General color brown ( Figs 7A–B ). Median part of frons ( Fig. 7D ) black brown. Eyes brown ( Figs 7B–C ), ornamented with irregular brown patches. Gena ( Fig. 7B ) black brown with two yellowish spots. Tegmen ( Figs 7B, E ) brown, costal margin with about 14 transverse black brown stripes from base to a little beyond middle, between the transverse brown stripes filled with light yellow stripes, sub-medially of tegmen with a large flavescent spot marked by 2 central transverse back lines. Wings brown, each side of A 2 with a longitudinal grayish narrowed band ( Fig. 7F ). Abdomen and terminalia brown.

Type material. Holotype, male, China: 20 Apr. 1964, Yunnan, Xishuangbanna, Menglun , 650 m, coll. Baolin Zhang.

Paratypes (8 males, 17 females, China) : 1 male: 13 Jul. 1958, 650– 700 m, coll. Chunpei Hong; 2 males, 4 females: 21/ 30 Apr. 1974, coll. Yao Chou, Feng Yuan et Yinyue Hu; 1 female: 22 May 1982, 1 female: 24 May 1982, coll. Qinmei Wang et Jingruo Zhou; 1 male, 1 female: 18 May 1991, 1 female: 20 May 1991, 1 male, 1 female: 22 May 1991, 2 females: 26 May 1991, 3 males, 6 females: 31 May 1991, coll. Yinglun Wang et Wanzhi Cai; Yunnan, Xishuangbanna, Menglun .

Distribution. China (Province Yunnan).

Figures

FIGURE 7. Ricanula peronata sp. nov. A, habitus, dorsal view; B, same, lateral view; C, anterior part of body, dorsal view; D, frons and clypeus, frontal view; E, tegmen, dorsal view; F, wing, dorsal view. Scale bars = 1.0 mm (Figs A, B, E); 0.50 mm (Figs C, F); 0.20 mm (Fig. D).

FIGURE 8. Ricanula peronata sp. nov. A–B: male terminalia; C–I: female terminalia. A, male terminalia, lateral view; B, male anal tube, dorsal view; C, female anal tube, dorsal view; D–E, gonapophyses IX and gonospiculum bridge: D, lateral view; E, dorsal view; F, female terminalia, bursa copulatrix and spermatheca, lateral view; G, gonapophysis VIII and endogonocoxal process, lateral view; H, gonoplac, lateral view; I, Pregenital sternite, ventral view. Scale bars = 0.50 mm (Figs A, D, G–I); 0.20 mm (Figs B–C, E); 0.10mm (Fig. F).

FIGURE 9. Ricanula peronata sp. nov. A–C: phallic complex; D–F: periandrium; G–I: aedeagus. A, D, G, lateral view; B, E, H, dorsal view; C, F, I, ventral view. Scale bars = 0.20 mm (Figs A–I).

FIGURE 11. The distribution of Ricanula spp. in China.