Apolygus namyatovae Kim & Jung 2026, sp. nov.

Apolygus namyatovae Kim & Jung sp. nov. Figs 3, 4, 5 Material examined. Vietnam • Holotype. 1 ♂, Lam Dong Prov., Bao Lam District, Loc Tan (11°38'41.28"N, 107°42'00.78"E), 880 m altitude, 30.iv.2025, J. Kim leg. (ZCDTU) (DTUHMM 0100). Paratype. • 1 ♀, same data as for holotype (ZCDTU) (DTUHMM 0101). Diagnosis. Distinguished by the combination of the following characters: dorsum entirely greenish, very small, with total length <3 mm; tibial spines brownish (Fig. 3); shaft of the left paramere narrow, with tapered apex; shaft of the right paramere short; vesica with three sclerites; ventral sclerite thick and tapered apically, with small process subbasally; wing-shaped sclerite subequal to lateral sclerite in length, with numerous small papillate protuberances (Fig. 4); interramal lobe broad, approximately half as large as lateral lobe (Fig. 5). Description. Male. Coloration: body mostly greenish with dark parts. Head: mostly greenish; antenna partly greenish brown to dark brown; first and second segment entirely pale greenish brown; third segment mostly dark brown, except for pale base; fourth segment missing; labium partially pale to dark brown; apical part of fourth segment dark brown. Thorax: pronotum and scutellum entirely greenish; hemelytron mostly greenish with dark areas; clavus, corium and embolium entirely greenish; cuneus mostly greenish brown, inner area with darker; membrane mostly greyish, anterior area with small dark markings; legs generally pale greenish brown; hind femur with indistinct dark markings subapically; tibiae entirely pale brown, extreme apex darker, tibial spines brown; all tarsi mostly brown; apical part of tarsomeres darker. Abdomen: entirely greenish. Surface and vestiture: body generally weakly shiny, shallowly punctate, densely covered with short pale setae. Structure: body elongate-oval, relatively small, length ~ 2.6 mm. Head: weakly prognathous, transverse, 3.50 × as wide as long; vertex 0.69 × as wide as single compound eye width; antenna generally linear and cylindrical; first segment as thick as second segment maximal diameter, 1.95 × as long as vertex width, 0.33 × as long as second segment; second segment 1.79 × as long as third segment; proportion of antennomeres I – IV 0.39: 1.18: 0.66: [missing]; labium reaching hind coxa. Thorax: pronotum trapezoid, dorsal longitudinal length 0.49 × as long as posterior maximal width, lateral margin straight, posterior margin broadly convex, humeral angle round; callus small, weakly swollen; pronotal collar thin, thinner than third antennomere maximal diameter; scutellum almost flat, width more than length, length shorter than claval commissure length; exposed part of mesoscutum narrow; lateral margin of hemelytron almost straight; cuneus somewhat broad, cuneal outer margin 0.47 × as long as embolial margin; all legs with first tarsomere subequal to second tarsomere, third tarsomere longest. Abdomen: tapering to apex, almost reaching apex of cuneus. Genitalia: left paramere strongly curved, shaft long, apex of shaft curved, tapered apically, sensory lobe narrow (Fig. 4 A – C); right paramere rod-shaped, stout, shaft short, apex of shaft tapered apically (Fig. 4 D, E); vesica membranous with three sclerites; lateral sclerite (ls) thin and long, smoothly curved; ventral sclerite (vs) smoothly curved subapically, thick, tapered apically, with small process subbasally, basal part narrow; wing-shaped sclerite (ws) subequal to ls, outer margin with sharp serrations, basal part with numerous small papillate protuberances (Fig. 4 F, G). Female: Coloration: same as in male. Surface and vestiture: same as in male. Structure: same as in male, except for body larger, ~ 2.99 mm. Genitalia: Parieto-vaginal ring (pvr) elongate oval, lateral oviduct (lob) outer margin round (Fig. 5 A); posterior wall with elongate lateral lobe (llb) with somewhat large interramal lobe (irl); llb with small hooked-shaped part ventrally; irl somewhat broad, approximately half as large as llb (Fig. 5 B). Measurements (in mm). Male (n = 1) / female (n = 1) Body length, clypeus – apex of membrane: 2.67 / 2.99; head length, excluding collar: 0.22 / 0.28; head width across eyes: 0.77 / 0.77; vertex width: 0.20 / 0.26; length of 1 st antennomere: 0.39 / 0.35; 2 nd: 1.18 / 1.06; 3 rd: 0.66 / 0.77; 4 th: missing / missing; mesal pronotal length: 0.58 / 0.61; pronotal maximal width: 1.18 / 1.19; scutellar width: 0.54 / 0.61; mesal scutellar length: 0.46 / 0.51; claval commissure length: 0.58 / 0.65; maximal width across hemelytron: 0.62 / 0.68; length of hind leg (femur: tibia: tarsus): 1.09: 1.68: 0.39 / 1.05: 1.71: 0.41. Etymology. This species is named in honor of Dr. Anna Namyatova, in recognition of her contributions to the study of Miridae and the genus Apolygus. The specific name is treated as a noun in the genitive case. Plant association. This species was collected from an unidentified broad-leaf tree. Distribution. Vietnam (Central highlands). Remarks. Apolygus namyatovae sp. nov. can be readily distinguished from other known Apolygus species by its small body size, <3 mm in length, and by its generally green coloration. It can also be separated from other species with greenish coloration (e. g., species with greenish dorsum in Yasunaga and Yasunaga 2000; Zheng et al. 2004; and Yasunaga 2023) by its small body size; the narrow shaft of the left paramere; the short shaft of the right paramere; the shape of the wing-shaped sclerite (with numerous small papillate protuberances), and the shape of ventral sclerite (long and weakly curved subapically, smoothly tapered, and distinctly projected subbasally). This new species is most similar to A. nepius Yasunaga & Yasunaga, 2000 from the southernmost part of Japan, but can be distinguished by its distinctly smaller body, <3 mm in length (vs> 3.9 mm); the second antennomere subequal to or slightly shorter than pronotal maximum width (vs the second antennomere distinctly shorter than pronotal maximum width); and the ventral sclerite apically blunt with a basal projection (vs the ventral sclerite apically sharp and lacking a basal projection). Chérot et al. (2025) provided a detailed review of the groups belonging to the Lygus complex, including the genus Apolygus, and presented detailed diagnostic characters and a key. The present new species conforms well to the diagnostic characters provided by Chérot et al. (2025). Although the hind tibial spines of this species are brown rather than dark, the male genitalia clearly possess a well-developed wing-shaped sclerite. Therefore, we provisionally place this new species in the genus Apolygus. However, the shaft of the left paramere is not broadly developed, and the interramal lobe of the female genitalia is relatively large and lacks spinules. These states differ somewhat from the typical morphology of the genus Apolygus. Accordingly, further study is required to confirm the generic placement of this species.