Apolygus atriclavus Kim et Jung

Kim, Junggon & Jung, Sunghoon, 2016, Two new species of the genus Apolygus China (Hemiptera: Heteroptera: Miridae: Mirinae) from the Korean Peninsula, with a key to Korean Apolygus species, Zootaxa 4137 (4), pp. 592-598 : 595-596

publication ID	https://doi.org/ 10.11646/zootaxa.4137.4.12
publication LSID	lsid:zoobank.org:pub:1B55BD2C-B251-473D-AC46-5DCA020057D1
DOI	https://doi.org/10.5281/zenodo.6066849
persistent identifier	https://treatment.plazi.org/id/6E4CC06A-FF98-FFCA-FF77-FACCFA969879
treatment provided by	Plazi
scientific name	Apolygus atriclavus Kim et Jung
status	sp. nov.

Treatment

Apolygus atriclavus Kim et Jung sp. nov.

( Figs. 1 View FIGURE 1 B–C, 2F–J)

Diagnosis. Differs from other species of Apolygus as follows: body generally brownish orange and partly dark brown; first antennal segment with dark stripe laterally; base of second antennal segment dark brown; lorum with dark marking; pronotum tinged with dark brown; mesoscutum dark brown; clavus entirely dark brown; femur pale brown with two dark rings ( Figs. 1 View FIGURE 1 B–C); hypophysis of left paramere rounded and its apex short; sensory lobe of left paramere broad ( Fig. 2 View FIGURE 2 F); hypophysis of right paramere long and its apex sharp and coiled ( Figs. 2 View FIGURE 2 G–H); vesica membranous with one long spicule and five sclerites; needle-shaped spicule as long as ventral sclerite; wing-shaped sclerite shorter than lateral sclerite, with distinct teeth laterally; ventral sclerite straight at apical part; lateral sclerite straight and tapered at its apex; sublateral sclerite small with spinules ( Figs. 2 View FIGURE 2 I–J).

Description. Male: Body elongated–oval, length 5.21. COLORATION: dark brown and pale brown. Head: brown; compound eyes dark brown; antennae generally dark brown; first antennal segment pale brown with dark stripe laterally, except for its apex; basal part of second antennal segment pale brown except for dark base; base of third antennal segment pale brown; tylus entirely dark brown; lorum with dark brown marking; rostrum almost brown; apical part of fourth rostral segment dark brown. Thorax: pronotum almost dark brown, anterior part of pronotum somewhat pale; mesoscutum dark brown; scutellum brown; hemelytra generally dark brown; clavus entirely dark brown; anterior part of corium pale brown in triangle shape, posterior part of corium dark brown; paracuneus dark brown; cuneus pale brown, apex of cuneus dark brown; membrane grayish; legs almost brown; apical part of femur with dark rings; apex of tibia slightly darker; third tarsal segment dark brown. Abdomen: almost brown. SURFACE AND VESTITURE: body glossy, covered with pubescence; head covered with somewhat sparsely short pubescences; first antennal segment with short suberect setae; pronotum with punctures and covered with pubescences except for anterior part; scutellum and hemelytra with punctures and covered with long pubescences; tibia with dark spines originated on dark spot. STRUCTURE: Head: vertex width shorter than length of first antennal segment, vertex width longer than width of compound eye, with longitudinal groove; antennae cylindrical; first antennal segment thicker than others; second antennal segment slightly thicker gradually toward its apex; proportion of first to fourth antennal segments 0.5:1.9:1.2:0.7; rostrum not exceeding hind coxae; proportion of first to fourth rostral segments 0.4:0.5:0.4:0.6. Thorax: pronotum trapezoid, posterior margin of pronotum slightly rounded and concave in middle; scutellum equilateral; mesoscutum slightly depressed; lateral margin of hemelytra rounded; cuneal fracture well developed; membrane with two cells; legs generally slender; hind femur somewhat thick; tibia slender;. Abdomen: rounded, reaching to apex of cuneus. GENITALIA: genital segment slightly triangle in shape with asymmetric parameres ( Fig. 2 View FIGURE 2 F–H); left paramere with short setae, hypophysis rounded, apex of hypophysis short, sensory lobe broad ( Fig. 2 View FIGURE 2 F); right paramere thin with setae, hypophysis long and its apex sharp and coiled ( Fig. 2 View FIGURE 2 G–H); vesica membranous with one spicule and five sclerites; needle-shaped spicule (ns) approximately as long as ventral sclerite; median sclerite (ms) somewhat thin; wingshaped sclerite (ws) thin, shorter than lateral sclerite, with distinct teeth laterally; ventral sclerite (vsc) much longer than ws, straight at apical part, tapered to its apex; sublateral sclerite (sls) small with spinules; lateral sclerite (ls) longer than ws, straight and tapered to its apex ( Fig. 2 View FIGURE 2 I–J).

Female: Body oval, length 5.23–5.75. COLORATION: as in male except as follows: pronotum paler; scutellum pale brown; anterior part and inner part of corium pale brown; abdomen pale brown tinged with greenish yellow. SURFACE AND VESTITURE: as in male. STRUCTURE: as in male except for somewhat larger in overall shape than male and abdomen reaching to apex of hemelytra.

Measurements (in mm): Male (n=1)/female (n=2): Body length, tylus-apex of membrane: 5.21/5.23–5.75; head length, excluding collar: 0.31/0.33–0.36; head width, including compound eyes: 1.14/1.11–1.15; vertex width: 0.44/0.45–0.47; 1st antennal segment length: 0.51/0.55–0.66; 2nd antennal segment length: 1.95/1.80–1.98; 3rd antennal segment length: 1.26/1.37–missing; 4th antennal segment length: 0.74/missing–missing; total antennal length: 4.46/3.72 (missing)–2.64 (missing); 1st rostral segment length: 0.45/0.43–0.49; 2nd rostral segment length: 0.49/0.51–0.57; 3rd rostral segment length: 0.41/0.36–0.37; 4th rostral segment length: 0.63/0.51–0.59; total rostral length: 1.98/1.81–2.02; mesal pronotal length: 0.95/0.97–1.00; basal pronotal maximal width (straight): 2.16/2.03– 2.22; anterior scutellum width: 1.15/1.21–1.24; mesal scutellum length: 1.40/1.40–1.47; outer embolial margin length: 2.61/2.68–2.78; outer cuneal margin length: 0.99/1.03–1.09; maximal width across hemelytron: 1.35/1.27– 1.35; foreleg (femur: tibia: tarsus): 1.14:1.37:0.52/1.06–1.17:1.36–1.49:0.51–0.53; mid leg (femur: tibia: tarsus): 1.33:1.72:0.51/1.35–1.46:1.73–1.79:0.53–0.56; hind leg (femur: tibia: tarsus): 1.98:2.87:0.53/1.77–2.07:2.62– 2.92:0.68:0.75.

Distributions. Korea (Central)*.

Hosts. Artemisia selengensis Turcz. (Asteraceae) *.

Etymology. From Latin atri (dark brown, black) combined with clavus, referring to entirely dark clavus; an adjective.

Materials examined. Holotype: [ CNU] 1♂, Bongsan–ri, Jinbu–myeon, Pyeongchang–gun, Gangwon–do, Korea, 19.ix.2015, on Artemisia selengensis , WG Kim; Paratypes: [ CNU] 2♀♀, same data as holotype.

Discussion. This species is similar to Japanese congener, A. xanthomelas , but can be distinguished by body larger (over 5 mm), without any markings on calli, hypophysis of right paramere somewhat long and lateral sclerite longer than wing-shaped sclerite (see Yasunaga (2000) for A. xanthomelas ). This species is also similar to Russian A. adustus , but can be distinguished by its unique genital structures: wing-shaped sclerite and lateral sclerite longer, lateral sclerite thicker and straight form and niddle-shaped spicule long (see Josifov & Kerzhner (1972) for A. adustus ). This species is usually found on Artemisia selengensis Turcz. (Asteraceae) ( Fig. 3 View FIGURE 3 ), as its host plant.