Reticuluma bipennata Xu & Dai, 2020

Xu, Tielong, Yu, Zhou, Dai, Renhuai & Yang, Maofa, 2020, Description of a new species of the leafhopper genus Reticuluma Cheng & Li, 2005 (Hemiptera: Cicadellidae: Penthimiini) from China with a key to species, Zootaxa 4809 (1), pp. 177-186 : 179-180

Reticuluma bipennata Xu & Dai sp. nov.

( Figs. 1 A–D, 2A–F, 3O–P, 5D, H, L)

Measurement. Body length (including tegmen): male 3.6–3.8 mm.

Description. Pronotum, scutellum and forewings with reticulate color pattern ( Fig. 1A ). Anterior margin of crown arcuate forward, vertex of crown sloped, longer than half of width to eyes, with three black patches arranged in arc. Face black, coronal suture about 3/5 length of vertex ( Figs. 1B, D ). Ocelli yellow-gray, eyes black with gray stripes. Two yellow spots between eyes, equidistant between eye and coronal suture. Pronotum pale yellowish with dark brown patches on posterior margin. Pronotum approximately 2 times length of crown. Scutellum pale yellowish, with grayish brown patch close to apical area and each basal angle, suture distinct. Forewing subhyaline, with five apical cells ( Fig. 1A ).

Male genitalia. Male pygofer quadrate in lateral view with short macrosetae near posterior margin ( Fig. 2A ). Subgenital plate similar to triangular with several short setae near the lateral margin ( Fig. 2B ). Connective Y-shaped, stem slightly shorter than arms ( Fig. 2C ). Style slender, broad subapically, acute at apex ( Fig. 2D ). Aedeagal shaft triangle-like in dorsal and ventral view ( Figs. 2E , 3O ), arcuate in lateral view ( Figs. 2F , 3P ). Aedeagus shaft with a pair of wing-shaped processes in lateral margin in dorsal view, the processes with several setae near inner margin centrally; gonopore apical ( Figs. 2E , 3O ).

Type material. Holotype: ♂ ( GUGC), CHINA, Yunnan Prov., Mt. Gaoligong, Baihua Ridge , 22 May 2019, coll. Xu Tielong ; Paratypes: 1♂ ( GUGC), CHINA, Yunnan Prov., Mt. Gaoligong, Baihua Ridge , 05 August 2013, coll. Yang Weicheng ; 1♂ ( GUGC), CHINA, Yunnan Prov., Xinping County, Mt. Wenbi , 22 July 2018, coll. Wang Xianyi ; 1♂ ( GUGC), CHINA, Yunnan Prov., Mengla County, Menglun Town , 13 June 2019, coll. Xu Tielong.

Etymology. The new species name is an adjective that combines the Latin prefix “ bi- ” (two) with “ penna ” (feather), referring to the two wing-like processes of the aedeagus.

Remarks. The new species is similar to R. lageniformia , but can be distinguished from the later by the shape of the aedeagus with wing-like processes and the aedeagal shaft situated lower than the wing-like processes ( Figs. 2E, F , 3O, P ), the basally broad connective ( Fig. 2C ), and the style preapical lobe without setae near the inner margin ( Fig. 2D ).

Figures

FIGURE 1. A–D. Reticuluma bipennata sp. nov. A, habitus, dorsal view; B, head and pronotum, dorsal view; C, habitus, lateral view; D, face.

FIGURE 2. Reticuluma bipennata sp. nov. A, Pygofer, lateral view; B, genital valve and subgenital plate, ventral view; C, connective, ventral view; D, style, ventral view; E, aedeagus, dorsal view; F, aedeagus, lateral view.

FIGURE 3. Male aedeagus of Reticuluma. A, R. citrana. lateral view. B, R. spinata. lateral view. C– D, R. lini. dorsal and lateral view. E–F, R. dactyla. dorsal and lateral view. G–H, R. eurya, dorsal and lateral view. I–J, R. testacea. ventral and lateral view. K–L, R. lageniformia. posterior and lateral view. M–N, R. hamata. posterior and lateral view. O–P, R. bipennata sp. nov., dorsal and lateral view.A, B after Cheng & Li, (2005); E, F, G, H, I, J after Fu & Zhang (2015); K, L, M, N after Wang & Zhang (2019).