Pseudosymplanella maxima, Gong & Chen & Yang, 2023

Gong, Nian, Chen, Xiang-Sheng & Yang, Lin, 2023, A new bamboo-feeding species of the genus Pseudosymplanella Che, Zhang & Webb, 2009 (Hemiptera, Caliscelidae, Ommatidiotinae) from China, ZooKeys 1186, pp. 97-104 : 97

Pseudosymplanella maxima sp. nov.

Figs 1-4 , 5-15 , 16-21

Description.

Measurements. Body length including forewing: male 5.1 mm (N = 1), female 6.0-6.2 mm (N = 3); forewing length: male 4.2 mm (N = 1), female 5.0-5.2 mm (N = 3).

Coloration. Body (Figs 1-4 ) grass green. Eyes reddish brown, ocelli orange red. Second segment of antenna (Fig. 6 ) with a black transverse spot near apex. Clypeus (Fig. 6 ) with basal half brown.

Head and thorax. Head (Fig. 5 ) with eyes as wide as pronotum. Vertex (Fig. 5 ) with length in middle line 0.8 times than width at base. Frons (Fig. 6 ) with length in middle line 1.1 times than maximum width. Pronotum (Fig. 5 ) with length in middle line shorter than vertex (0.8:1). Mesonotum (Fig. 5 ) 1.2 times as long as vertex and pronotum together in middle line. Forewing (Fig. 8 ) longer in middle line than broad at widest part (3.8:1); veins distinct, without nodal line, R and MP with common stem; ScP, R and CuA single, MP with three branches, Pcu uniting A1 at basal half of clavus. Hindwing (Fig. 9 ) with length 1.7 times as long as broad at widest part, ScP and RP single, MP and CuA with two branches. Legs relatively long, hind tibia with a single lateral tooth; spinal formula of hind leg 6-0-0.

Male genitalia. Anal segment (Fig. 10 ) in dorsal view with length 1.3 times longer in mid-line than widest part, apical margin slightly concave; anal pore located at apical half; in lateral view (Fig. 11 ) dorsal margin sinuated, ventral margin slightly concave near apex with a small process, broadening distally and abruptly narrowed subapically. Pygofer in lateral view (Fig. 11 ) with dorsal margin distinctly shorter than ventral margin, posterior margin sinuated with a rather slender and long process near mid-length; in posterior view (Fig. 12 ), nearly oval, with length 1.7 times longer in mid-line than widest part; in ventral view (Fig. 14 ), posterior margin broadly concave. Genital style in lateral view (Fig. 13 ) rather broad, nearly triangle, apical margin roundly convex; a strong finger-like process apically arising from dorsal margin, slightly curved. Aedeagus (Fig. 15 ) simple, tubular, slightly ventrally curved.

Female genitalia. Anal segment small, short, in dorsal view (Fig. 18 ) nearly quadrangle, anal pore near apex. Abdominal sternite VII in ventral view (Fig. 19 ) rather large and broad, behind the posterior margin with a small oval ossification flake. Gonapophysis VIII (first valvula) (Fig. 20 ) elongate, with five spines at apical margin. Gonapophysis IX (second valvula) (Fig. 21 ) with two symmetrical lobes, each lobe with many spines at dorsal margin. Gonoplac (third valvula) (Fig. 16 ) triangular, apical margin rounded.

Host plant.

Bamboo.

Distribution.

Southwestern China (Yunnan Province) (Fig. 22 ).

Type material.

Holotype: ♂, China: Yunnan Province, Menghai County, Mengzhe Reservoir (22°08'N, 100°26'E), 2019-X-4, Nian Gong. Paratypes: 1♂3♀, data same as holotype.

Etymology.

The specific name is derived from the Latin word “maximus”, referring to the long process of the pygofer.

Remarks.

This new species is closely related to P. nigrifasciata Che, Zhang & Webb, 2009, but differs in: 1) body mainly green, without stripe (body brown, with stripe in P. nigrifasciata ); 2) anal segment with anal pore located in apical half (anal pore located at mid-length in P. nigrifasciata ); and 3) posterior margin of pygofer in profile with slender and long process near the mid-length (posterior margin of pygofer in profile with thick and short process near dorsal margin in P. nigrifasciata ).

Figures

Figure 22. Geographic distributions of species of Pseudosymplanella Che, Zhang & Webb, 2009.

Figures 1 - 4. Pseudosymplanella maxima Gong, Yang & Chen, sp. nov. 1 male habitus, dorsal view 2 male habitus, lateral view 3 female habitus, dorsal view 4 female habitus, lateral view. Scale bars: 0.5 mm (1 - 4).

Figures 5 - 15. Pseudosymplanella maxima Gong, Yang & Chen, sp. nov., male 5 head and thorax, dorsal view 6 face 7 head and thorax, lateral view 8 forewing 9 hindwing 10 anal segment, dorsal view 11 male genitalia, lateral view 12 pygofer, posterior view 13 genital styles, lateral view 14 pygofer and genital styles, ventral view 15 aedeagus, lateral view. Scale bars: 1 mm (8, 9); 0.5 mm (5 - 7); 0.3 mm (11); 0.2 mm (10, 12 - 15).

Figures 16 - 21. Pseudosymplanella maxima Gong, Yang & Chen, sp. nov., female 16 genitalia, lateral view 17 genitalia, ventral view 18 anal segment, dorsal view 19 abdominal sternite VII, ventral view 20 gonapophysis VIII, lateral view 21 gonapophysis IX, lateral view. Scale bars: 0.5 mm (16, 17); 0.3 mm (19); 0.2 mm (18, 20, 21).