Dryophilocoris kerzhneri Jung et Yasunaga

Jung, Sunghoon, Duwal, Ram Keshari, Yasunaga, Tomohide, Heiss, Ernst & Lee, Seunghwan, 2010, A taxonomic review of the Genus Dryophilocoris (Hemiptera: Heteroptera: Miridae: Orthotylinae: Orthotylini) in the Fareast Asia with the description of a new species, Zootaxa 2692, pp. 51-60 : 52-53

Dryophilocoris kerzhneri Jung et Yasunaga sp. nov.

( Figs. 1–12 )

Diagnosis. Distinguished from its congeners by the relatively small body size (5~ 6 mm in length), the yellow exocorium ( Figs. 1–2 ) and the sharp and long vesica of male genitalia ( Fig. 9 ).

Etymology. Named after the late Dr. I. M. Kerzhner in recognition of his extensive knowledge of the Heteroptera .

Description. Male: Body elongate, parallel-sided; dorsal surface almost bare. Head shiny dark brown, almost glabrous ( Figs.1–2 ), with a yellow basal transverse carina on vertex. Antennae dark brown; segment I usually dark brown; segment II brown to dark brown, sometimes with paler base; lengths of segment I–IV: 0.42–0.45, 1.65–1.74, 0.77–0.78, 0.31–0.33. Pronotum entirely mat and pilose, with three yellow longitudinal stripes; calli dark brown with a yellow longitudinal stripe; scutellum yellow, smooth; mesoscutum dark brown; pleura widely grayish brown, pruinose; propleuron dark brown, with yellow margin; ostiolar peritreme and evaporatorium well-developed ( Figs. 5–8 ). Hemelytra dark brown, somewhat shagreened, sparsely pubescent; embolium, basal apex of cuneus, and anterior or sometimes whole lateral margin of corium yellow ( Figs. 1–2 ); membrane dark grayish brown, with apical parts of veins and a spot along apex of cuneus pale. Coxae and legs yellow; apical parts of femora sometimes tinged with orange brown; tibial spines pale brown, short; tarsi brown; pretarsus with well-developed parempodia and pulvilli ( Fig. 4 ); lengths of hind femur, tibia and tarsus: 1.48–1.54, 2.12–2.25, 0.28–0.35. Abdomen entirely yellowish brown. Genitalia ( Figs. 9–10 ): Ventral surface of genital segment moderately excavated at apex, left paramere long, apical part of left paramere of toothed shape; right paramere broad, vesica with main 3 branches, mesial branch of vesica toothed apically. Female: Similar to male but larger (see Dimensions below). Genitalia ( Fig. 11–12 ): Kstructure well-developed, narrow at basal part; anterior wall with large sclerotized rings, thin-rimmed, oval shape.

Dimensions (in mm). Male/female: body length 5.31–5.45/5.44–5.48; head width including eyes 0.78– 0.81/0.79–0.84; vertex width 0.32–0.38/0.38–0.41; rostral length 1.34–1.41/1.35–1.41; mesial pronotal length 0.74–0.81/0.75–0.89; basal pronotal width 1.33–1.41/1.41–4.45; width across hemelytra 1.41–1.48/1.55– 1.71.

Distribution. South Korea (Central).

Type materials. [SNU] Holotype: 13, Jechun-si, CB, South Korea, 14.v.2008, on Quercus monglica , leg. S. Jung; paratypes: 73, 6Ƥ, Sucheong-dong, Osan-si, GG, South Korea, 5.v.2000, by light trap (no collector’s name); 1Ƥ, Seoul National Univ., Seoul, South Korea, 21.v.2001, leg. H. Choi, on Corylus heterophylla var. thunbergii ; 13, 2Ƥ, Mt. Yongmoon, GG, South Korea, 25.v.2010, on Quercus aliena , leg. S. Jung and R. Duwal. The holotype and paratypes are deposited in SNU.

Figures

FIGURES 1 – 2. Dryophilocoris kerzhneri sp. nov. 1, paratype Ƥ; 2, habitus of live adult.

FIGURES 3 – 8. Scanning electron microscope of Dryophilocoris kerzhneri sp. nov. 3, head and pronotum on lateral view; 4, pretarsus with well-developed parempodia and pulvilli; 5 – 8, ostiolar peritreme and evaporatorium with long sensory setae.

FIGURES 9 – 12. Dryophilocoris kerzhneri sp. nov. 9, vesica (arrow indicates toothed shape); 10, right and left paramere; 11 – 12, female genitalia; 11, K-structure; 12, anterior wall with sclerotized rings. Scale: 0.2 mm.