Kokeshia acutiformis, Luo & Xie, 2022

Luo, Jiu-Yang & Xie, Qiang, 2022, Taxonomic review of Kokeshia Miyamoto, 1960 from China, with description of ten new species (Hemiptera: Heteroptera: Schizopteridae), European Journal of Taxonomy 802, pp. 1-57 : 5-8

Kokeshia acutiformis sp. nov.

urn:lsid:zoobank.org:act:063E5A54-D193-4A58-BA44-A7AC26B1121E

Figs 1–2 , 26A , 28A , 32

Diagnosis

Kokeshia acutiformis sp. nov. can be recognized from all other species of Kokeshia by male tergite VIII not subdivided into two hemitergites, only a long, flattened, acuminate process at right portion of tergite VIII, the process bent at about ⅓ from its apex ( Figs 1D‒G , 2A‒B ).

Etymology

The species epithet is derived from the Latin prefix ʻacut -ʼ and suffix ʻ- formis ʼ, means ‘acuminate shaped’, refers to the acuminate process of tergite VIII.

Material examined

Holotype CHINA • ♂; Yunnan Province, Lincang City, Cangyuan County, Banhong Town ; 23°18′44.65″ N, 99°4′39.48″ E; ca 920 m a.s.l.; 6 Aug. 2019; Jiu-Yang Luo leg.; light trap; SYSBM.

Paratypes CHINA • 2 ♂♂; same collection data as for holotype; SYSBM .

Description

Male

MEASUREMENTS (in mm) (male holotype / male paratypes, N = 2). Total body length 1.32 / 1.28–1.29; length of head 0.22 / 0.23–0.25, maximum width across eyes 0.41 / 0.40, interocular distance 0.24 / 0.22; length of antennal segment I 0.08 / 0.07–0.08, segment II 0.08 / 0.08, segment III 0.28 / 0.28, segment IV 0.30 / 0.30; length of labial segment I 0.07 / 0.07–0.08, segment II 0.05 / 0.05, segment III 0.04 / 0.04, segment IV 0.11 / 0.10; middle length of pronotum 0.35 / 0.36, length of collar 0.06 / 0.06–0.07, humeral width 0.59 / 0.60; length of forewing 1.07 / 0.95–1.08; length of fore femur 0.33 / 0.29–0.31, fore tibia 0.31 / 0.32, fore tarsus 0.12 / 0.11–0.12; length of middle femur 0.31 / 0.33, middle tibia 0.32 / 0.31, middle tarsus 0.12 / 0.12; length of hind femur 0.36 / 0.35–0.36, hind tibia 0.50 / 0.53–0.55, hind tarsus 0.17 / 0.17–0.18; greatest width of abdomen 0.53 / 0.53.

MACROPTEROUS. Small sized (about 1.28‒1.32 mm).

COLORATION. Body yellowish brown to light brown, appendages yellowish brown ( Fig. 1A‒C ). Surface, vestiture and general structures as in generic description, except mentioned below.

HEAD. Interocular distance 0.55–0.59 × length of maximum width across eyes.

THORAX. Humeral width 1.66‒1.68 × as long as middle length of pronotum. Venation of forewing in accordance with general pattern of genus. C+Sc, R+M, R and basal portion of 1An darker than wing surface, other veins slightly darker than wing surface ( Fig. 26A ).

ABDOMEN. Tergite VII slightly asymmetrical, right portion wider than left portion, sternite VII nearly symmetrical. Tergite VIII not subdivided into two hemitergites, only a long, flattened, acuminate process at right portion of tergite VIII, process bent at about ⅓ from its apex ( Figs 1D‒G , 2A‒B ).

GENITALIA. Pygophore slightly asymmetrical, dorsum with rows of tooth like microtrichia, posterior area with about twelve relatively long setae ( Fig. 1D‒G ). Parameres strongly asymmetrical, left paramere ( Figs 1E , 2D‒E ) with broadly squarish laminate extension directed dorsal near base, and with flattened and elongate distal projection; right paramere ( Figs 1E , 2F‒G ) with flattened and acute, near triangular distal projection, curved inward at middle portion. Apical portion of phallus ( Figs 1D‒E , 2C ) tubular, short, forming one incomplete coil outside of pygophore.

Female

Unknown.

Distribution

China: Yunnan ( Fig. 32 ).

Figures

Fig. 1. Kokeshia acutiformis sp. nov. A‒C. Habitus, holotype, ♂ (SYSBM). A. Dorsal view. B. Lateral view. C. Ventral view. D. Pregenital abdomen and genitalia, dorsal view, paratype, ♂ (SYSBM). E‒G. Scanning electron micrographs of genitalia, paratype, ♂ (SYSBM). E. Dorsal view. F. Right side, dorsal view. G. Left side, dorsal view. Abbreviations: see Material and methods.

Fig. 2. Kokeshia acutiformis sp. nov., segment VIII and genitalia, paratype, ♂ (SYSBM). A‒B. Left hemitergite VIII. A. Dorsal view. B. Right lateral view. C. Phallus. D‒E. Left paramere, two different aspects. F‒G. Right paramere, two different aspects.

Fig. 26. Forewings of Kokeshia spp., dorsal views. A. K. acutiformis sp. nov., paratype, ♂ (SYSBM). B. K. baii sp. nov., paratype, ♂ (SYSBM). C. K. bui sp. nov., paratype, ♂ (SYSBM). D. K. caii sp. nov., paratype, ♂ (SYSBM). E. K. drepanoides sp. nov., paratype, ♂ (SYSBM). F. K. hilli sp. nov., paratype, ♂ (SYSBM). G. K. hsiaoi Ren & Zheng, 1992, ♂ (SYSBM). H. K. pengae sp. nov., paratype, ♂ (SYSBM).

Fig. 28. Pregenital abdomen and genitalia of Kokeshia spp., dorsal views. A. K. acutiformis sp. nov., paratype, ♂ (SYSBM). B. K. baii sp. nov., paratype, ♂ (SYSBM). C. K. bui sp. nov., paratype, ♂ (SYSBM). D. K. caii sp. nov., paratype, ♂ (SYSBM). Abbreviations: see Material and methods.

Fig. 32. Distribution map of Kokeshia spp. Red open circle = K. acutiformis sp. nov.; red solid circle = K. baii sp. nov.; blue open triangle = K. bui sp. nov.; blue open circle = K. caii sp. nov.; yellow open circle = K. drepanoides sp. nov.; yellow solid circles = K. esakii Miyamoto, 1960; red open triangle = K. hilli sp. nov.; blue solid squares = K. hsiaoi Ren & Zheng, 1992; red open square = K. martensi Štys, 1985; yellow solid square = K. oroszi Rédei, 2008; yellow open triangle = K. pengae sp. nov.; green open hexagon = K. redeii sp. nov.; yellow open square = K. renae sp. nov.; yellow solid triangle = K. similis Štys, 1985; blue solid triangle = K. stysi Rédei, 2008; blue open square = K. weirauchae sp. nov.; red solid triangles = K. xiei Rédei, Ren & Bu, 2012; red solid square = K. zhengi Rédei, Ren & Bu, 2012.