Urostylis koreana Kim & Jung, 2018

Kim, Junggon, Roca-Cusachs, Marcos & Jung, Sunghoon, 2018, Taxonomic review of the genus Urostylis (Hemiptera: Heteroptera: Urostylididae) from the Korean Peninsula, with description of a new species, Zootaxa 4433 (3), pp. 445-456 : 446-447

Urostylis koreana Kim & Jung sp. nov.

( Figures 1A , 2A, G , 3A , 4A , 5A, F )

DIAGNOSIS: Body smaller; pronotum and scutellum with pale punctures; first antennal segment with dark longitudinal line; humeral angle with dark punctures; endocorium with dark punctures against the claval suture; exocorium with dark punctures; basal part of tibia without black band ( Figure 1A ); lateral margin of genital capsule straight, apex somewhat narrow with dense setae in dorsal view ( Figure 2A ); median process of genital capsule not reaching to dorsal wall of capsule in lateral view ( Figure 2G ), rectanglar with bilobate apex ( Figure 3A ); paramere rod-shaped, and curved subapically ( Figure 4A ).

DESCRIPTION: Male: Body oval and elongated, length 11.39–11.48. COLOR. mostly greenish. Head: generally greenish, sometimes reddish; antennae almost brown, first segment with dark line laterally, apex of third, fourth and fifth segment dark brown; rostrum green, apex of fourth rostral segment dark brown. Thorax: pronotum entirely green except for pale anterolateral yellowish margin, with pale punctures, humeral angle with dark punctures; scutellum entirely greenish, with pale punctures; hemelytra mostly greenish, with sparsely dark punctures; clavus with dark punctures along the veins; exocorium with dark punctures; membrane transparent; legs almost green; apical part brown; third tarsal segment brown. Abdomen: entirely green. SURFACE AND VESTITURE: Body slightly glossy, covered with silvery short pubescences; antenna with densely short pubescences; legs with setae. STRUCTURE. Head: width of head longer than length, mandibular plate projected as long as clypeus dorsally; length of antennae longer than length of body, first segment longer than 2 times length of head; rostrum not reaching to midcoxae. Thorax: anterior and posterior margin of pronotum rounded, lateral margin sinuated?; mesal length of scutellum longer than width; lateral margin of hemelytra rounded; legs generally long; femur distinctly thick; first tarsal segment as long as third segment. Abdomen: margin rounded, not reaching to apex of membrane. GENITALIA: lateral margin of genital capsule straight, apex somewhat narrow with dense setae in dorsal view ( Figure 2A ); median process of genital capsule not reaching to dorsal wall of capsule in lateral view ( Figure 2G ), process rectangle with two convex protuberances at apex ( Figure 3A ); paramere rod-shaped, curved subapically, its apex somewhat blunt ( Figure 4A ).

Female: Body oval and elongated, length 11.84–13.02. COLOR: as in male. SURFACE AND VESTITURE: as in male. STRUCTURE: as in male except for genital segment. GENITALIA: lateral seventh abdominal segment semi flat, central seventh abdominal segment slightly concave and straight at center; gonocoxites 8 small, triangular and toughing at apex; laterotergites 8 ovoid and short, extending beyond as laterotergites 9; laterotergites 9 subparallel to gonocoxite 8, touching at base but divergent at apex ( Figure 5A ); spermatheca coiled, robust and widened at sclerotized apices ( Figure 5F ).

MEASUREMENTS (IN MM): Male (n=4)/Female (n=2) Body length, head-apex of membrane: 11.39–11.48/ 11.84–13.02; head length: 0.95–1.07/1.17–1.21; head width, including compound eyes: 1.67–1.75/1.79–1.89; 1st antennal segment length: 2.57–2.67/2.78–2.91; 2nd antennal segment length: 3.22–3.25/3.32–3.45; 3rd antennal segment length: 1.29–1.48/1.52–1.66; 4th antennal segment length: 2.61–2.62/2.67–2.73; 5th antennal segment length: 2.30–2.39/2.14–2.21; total antennal length: 11.98–12.41/12.43–12.96; mesal pronotal length: 1.84–1.99/ 2.06–2.19; basal pronotal maximal width (straight): 4.04–4.24/4.43–4.61; anterior scutellar width: 2.53–2.59/2.80– 2.93; mesal scutellar length: 3.72–3.93/2.84–3.35; costal margin length (straight): 6.67–6.75/7.26–8.02; maximal width across hemelytron: 2.0 3–2.27/2.33–2.54; foreleg (femur: tibia: tarsus): 2.93–2.95:3.07–3.11:1.54–1.56/3.12– 3.23:3.10–3.19:1.52–1.61; midleg (femur: tibia: tarsus): 3.44–3.68:2.99–3.06:1.49–1.55/2.96–3.44:3.12– 3.41:1.38–1.58; hindleg (femur: tibia: tarsus): 4.27–4.34:4.38–4.49:1.82–1.49/3.84–4.37:4.70–5.05:1.63–1.78.

MATERIALS EXAMINED: Holotype: [ CNU] 1♂, Donam-ri , Geumnam-myeon, Sejong, Korea, 3.vi.2015, H.J. Kim ; Paratypes: [ CNU] 1♀, Sucheong-dong , Osan-si, Gyeonggi-do, Korea, 8.v.2008, O.S. Gu; [ CNU] 1♀, Jichon-ri, Yanggang-myeon, Yeongdong-gun, Chungcheongbuk-do, Korea, 24.vi.2014, H.U. Lee; [ CNU] 2♂♂, Haesanryeong, Dongchon-ri, Hwacheon-eup, Hwacheon-gun, Gangwon-do, Korea, 16.vii.2015, J. Kim; [ CNU] 1♂, Pocheon-si, Gyeonggi-do, Korea, 6.vi.2016, S.M. Oh.

HOSTS: Unknown.

ETYMOLOGY: Named after type locality Korean Peninsula.

DISTRIBUTIONS: Korea.

DISCUSSION: This species is similar in body size to some species (e.g. U. chinai , U. limbata , U. similinsignis , U. tricarinata , and U. venulosa ; 9.5mm – 11.5mm) ( Hsiao, 1977), but it can be easily distinguished by median process of genital capsule and paramere. This species is also similar to U. lateralis in general appearance, but it can be easily distinguished by smaller body, head less projected dorsally, without reddish band in apical part of femur and structures of median process of genital capsule. This species is attracted to light trap, but other biological information is unavailable.

Figures

FIGURE 1. Dorsal habitus of Urostylis spp. A: U. koreana sp. nov.; B: U. annulicornis; C: U. lateralis; D: U. striicornis; E: U. trullata; F: U. westwoodii. Scale bar: 1mm.

FIGURE 2. Genital capsule of Urostylis spp in dorsal view and in lateral view. A, G: U. koreana sp. nov.; B, H: U. annulicornis; C, I: U. lateralis; D, J: U. striicornis; E, K: U. trullata; F, L: U. westwoodii; A–F: dorsal view; G–L: lateral view. Scale bar: 1mm.

FIGURE 3. Genital process of Urostylis spp. in caudal view (process was illustrated in dark). A: U. koreana sp. nov.; B: U. annulicornis; C: U. lateralis; D: U. striicornis; E: U. trullata; F: U. westwoodii. Scale bar: 1mm.

FIGURE 4. Paramere of Urostylis spp. A: U. koreana sp. nov.; B: U. annulicornis; C: U. lateralis; D: U. striicornis; E: U. trullata; F: U. westwoodii. Scale bar: 1mm.

FIGURE 5. Female genitalia of Urostylis spp. A–E: female genital plates (with drawings); F–J: spermatheca; A, F: U. koreana sp. nov.; B, G: U. annulicornis; C, H: U. lateralis; D, I: U. striicornis; E, J: U. westwoodii. VII: seventh abdominal segment; gc8: gonocoxites 8; la8: laterotergites 8; la9: laterotergites 9.