Capsus koreanus Kim & Jung

Kim, Junggon, Park, Haechul, Heiss, Ernst & Jung, Sunghoon, 2015, A new species of the genus Capsus Fabricius (Hemiptera: Heteroptera: Miridae: Mirinae) from the Korean Peninsula, with a key to the Korean Capsus species, Zootaxa 3905 (4), pp. 585-592 : 586-588

Capsus koreanus Kim & Jung sp. nov.

( Figs. 1–8 )

Diagnosis. Differs from other species of Capsus by the brightly reddish brown pronotum, scutellum, embolial outer margin and legs ( Fig. 1 ), and thin spicule with hollowed line of apex of spicule ( Figs. 7–8 ).

Description. Male: Body elongate-oval, length 5.58–6.27. COLORATION: Reddish brown and dark brown.

Head: generally dark brown; compound eyes dark brown; antennae generally dark brown, base of first and third antennal segment pale brown; tylus dark brown; first segment of rostrum reddish orange; basal half of second segment reddish brown and other part dark brown, third segment almost grayish brown, 1/3 basal part of fourth segment reddish brown with other part dark brown. Thorax: pronotum brightly reddish brown, margin of posterior pronotum reddish brown, sometimes brown stained spots; collar reddish orange; callus reddish brown; mesoscutellum reddish brown, scutellum generally brightly reddish brown, sometimes individual variation in color; ostiole peritreme reddish orange. Hemelytra dark brown, outer margin reddish brown; outer margin of cuneus reddish brown; embolium margin reddish brown; membrane grayish dark brown. Legs brightly reddish brown, femora almost reddish brown, with brown rings and some spots, sparsely erect setae; tibiae reddish pale brown, apex of tibia dark brown ring, brownish erect setae in two rows; tarsus pale brown, third segment dark brown, claw pale brown. Abdomen: dark brown. SURFACE AND VESTITURE: glossy, covered with densely golden short pubescence; antennae covered with densely short pubescence; pronotum densely pilose; femora with sparsely erect setae. STRUCTURE: Head: Ocelli absent; vertex width longer than first antennal segment; first segment relatively thick, second antennal segment clavate, third antennal segment relatively thinner than first and second antennal segment, proportion of first to fourth antennal segments 0.8:2:1:1.1. Rostrum reaching to midcoxae; proportion of first to fourth rostral segments 0.6:0.7:0.5:0.6.

Thorax: Pronotum trapezoid, mesal pronotal length longer than width of anterior margin, with callus somewhat swollen; scutellum equilateral. Lateral margin of hemelytra curved, cuneal fracture developed. Legs generally slender. Abdomen: rounded, almost reaching to apex of membrane. GENITALIA: gonopore short and round with curved parameres ( Figs. 4–6 ); left paramere with hypophysis; right paramere with hypophysis prominent downward; vesica with only one long spicule and two lateral sclerites, somewhat thin spicule, apex of spicule sharp and middle of lower line hollow ( Figs. 7–8 ).

FEMALE: Ovoid, length 5.92–6.06. COLORATION: as in male. SURFACE AND VESTITURE: as in male. STRUCTURE: somewhat more rounded oval in overall shape than male.

Measurements (IN MM). Male (n=6)/ female (n=2): Body length, tylus-apex of membrane: 5.58–6.27/ 5.92–6.06; head length, excluding collar: 0.33–0.52/0.41–0.45; head width, including compound eyes: 1.29–1.31/ 1.38–1.41; vertex width: 0.63–0.67/0.71–0.76; 1st antennal segment length: 0.61–0.64/0.64–0.65; 2nd antennal segment length: 1.82–2.02/1.71–1.86; 3rd antennal segment length: 0.84–0.93/0.96–1.01; 4th antennal segment length: 0.77–0.85/1.03–1.05; total antennal length: 4.14–4.59/4.44–4.67; 1st rostral segment length: 0.61–0.73/ 0.65–0.68; 2nd rostral segment length: 0.73–0.79/0.70–0.79; 3rd rostral segment length: 0.47–0.53/0.50–0.60; 4th rostral segment length: 0.57–0.59/0.55–0.65; total rostral length: 2.38–2.64/2.4–2.72; anterior pronotal margin width: 0.76–0.86/0.78–0.95; mesal pronotal length: 0.77–0.98/0.96–1.01; basal pronotal width: 1.91–2.09/ 2.10–2.23; outer embolial margin length: 2.81–2.96/2.71–3.08; outer cuneal margin length: 0.95–1.00/0.89–1.00; maximum width across hemelytra: 1.14–1.33/1.24–1.46; foreleg (femur: tibia: tarsus): 1.08–1.43:1.54–1.71:0.79– 0.89/1.31–1.39:1.54–1.66:0.64–0.75; midleg (femur: tibia: tarsus): 1.05–1.61:1.89–1.95:0.74–0.74/1.45–1.49:1.88 –1.94:0.73–0.90; hindleg (femur: tibia: tarsus): 1.90–2.39:2.94–2.97:0.81–0.86/2.27–2.29:2.90–3.00:0.93–0.95.

Distribution. South Korea (whole regions).

Hosts. Eleusine indica Gaertn (Poaceae) .

Etymology. Named after the type locality, the Korean Peninsula.

Material examined. Holotype: Boksu-dong, Seo-gu, Daejeon, South Korea, 6.v.2014, J.G. Kim, 1♂ ( CNU); Paratypes: Beob-dong, Dong-gu, Daejeon, Mt. Gyejok, South Korea, 16.v.2014, J.G. Kim, 1♂; Gung-dong, Yeseong-gu, Daejeon, Chungnam National Univ. South Korea, 9.vi.2014, J.G. Kim, ( NAAS); Haengjuoe-dong, Goyang-si, Gyeonggi-do, South Korea, 23.v.2007, Y.B. Lee, 4♂; Haengjuoe-dong, Goyang-si, Gyeonggi-do, South Korea, 23.v.2007, Y.B. Lee, 1♀ ( CNU).

Discussion. This species is mostly found on Eleusine indica Gaertn, 1788 (family Poaceae ; Indian goosegrass, Wiregrass), which seems to be a host plant ( Figs. 2–3 ). This species appears early May to early August in South Korea. This species is widely distributed to the most regions in South Korea, unlike the congeneric species distributed in North Korea.

Figures

FIGURES 1 – 3. 1, Capsus koreanus Kim & Jung sp. nov., Holotype ♂ from the Korean Peninsula; 2, live adult on host plant; 3, habitat of the new species (grassland). Scale bar: 1 mm.

FIGURES 4 – 8. Male parameres and genitalia of Capsus koreanus Kim & Jung, sp. nov. 4 – 6, parameres; 4, left paramere; 5, right paramere in right view; 6, right paramere in left view; 7, vesica; 8, apex of spicule; hps hypophysis, sl sensory lobe, hs hook-shaped spicule, vsc ventral sclerite; scale bar: 0.1 mm.