Montandoniola kerzhneri, Yamada, Kazutaka, Yasunaga, Tomohide & Miyamoto, Syôiti, 2010

Yamada, Kazutaka, Yasunaga, Tomohide & Miyamoto, Syôiti, 2010, A review of Japanese species of the genus Montandoniola (Hemiptera: Heteroptera: Anthocoridae), Zootaxa 2530, pp. 19-28 : 25-26

Montandoniola kerzhneri sp. nov.

( Figs. 7–13 , 16 , 22 )

Diagnosis. Recognized by the following characters: Body larger (3.45 mm) ( Figs. 7, 8 ). Antennal segments I and II ( Fig. 9 ) dark brown; segment II about as long as head width across eyes. Labium ( Fig. 10 ) dark brown, except for basal half of segment IV pale yellow. Ostiolar peritreme ( Fig. 11 ) strongly angular posteriorly, slightly curved interiorly, not touching anterior margin of metapleura. Legs ( Figs. 7, 8 ) dark brown; fore tibiae ( Fig. 12 ) pale yellow except for darkened base; mid tibiae ( Fig. 13 ) pale yellow at apical 1/4; hind tibiae uniformly dark brown; fore tibiae of female ( Figs. 12 , 16 ) armed with 10 small, fuscous teeth on ventral side. Copulatory tube ( Fig. 22 ) fused on left side of intersegmental membrane between sterna VII and VIII in dorsal view, adjacent to base of ovipositor, ovoid, shortened, consisting of tiny, membranous tube surrounded by well sclerotized wall.

Description. Female (holotype). Coloration. Head and pronotum ( Figs. 7–10 ) uniformly black; eyes reddish black; margin of ocellus red. Antennal segments I and II ( Figs. 7–9 ) dark brown; segment II somewhat reddish at tip; segments III and IV missing. Labium ( Figs. 8, 10 ) dark brown, except for basal half of segment IV pale yellow. Scutellum ( Fig. 7 ) overall blackish. Clavus ( Fig. 7 ) black along inner margin and claval commisure; endocorium ( Fig. 7 ) narrowly black along corium-membrane boundary; embolium and cuneus ( Fig. 7 ) wholly black; membrane ( Fig. 7 ) semi-transparent, centrally with distinct, broad, blackish stripe, except for semi-transparent base; remaining area of hemelytra whitish. Venter of thorax ( Fig. 8 ) black. Outer margin of ostiolar peritreme tinged with reddish brown. Legs ( Figs. 7, 8 ) dark brown; fore tibiae ( Fig. 12 ) pale yellow, except for darkened base; mid tibiae ( Fig. 13 ) pale yellow at apical 1/4; hind tibiae uniformly dark brown; all tarsi pale yellow tinged with fuscous apex. Abdomen ( Fig. 8 ) black, tinged with reddish brown.

Structure. Body ( Figs. 7, 8 ) elongate, shiny, sparsely covered with short, silky setae. Head ( Figs. 7–10 ) cylindrical, impunctate, as long as width across eyes, sparsely covered with long, erect setae intermixed with short, suberect setae; long, erect seta on each side of tylus, anteromesad of each eye, and between eye and ocellus; anteocular region ( Fig. 9 ) about as long as length of eye in dorsal view; vertex ( Fig. 9 ) about 2.3 times as wide as eye in dorsal view; postocular region distinctly long; eye ( Figs. 9, 10 ) oblong, not exceeding level of ventral surface and dorsal surface of head in lateral view. Antennal segment I ( Fig. 9 ) just reaching apex of head, sparsely covered with short setae; segment II ( Fig. 9 ) thickened, about as long as head width across eyes, densely covered with suberect setae which are shorter than width of the segment; segments III and IV missing. Labium ( Fig. 10 ) robust, reaching near fore coxae, sparsely covered with very short, reclining setae; segments II with a pair of long, erect setae near middle; segment III about 2.6 times as long as segment II; segment IV about 0.64 times as long as segment III.

Pronotum ( Figs. 7, 9 ) with long, stout, erect setae on anterolateral and posterolateral corners and a pair of similar setae behind the collar; surface smooth, with scattered short, suberect setae and fine, erect setae along lateral margin; anterior margin nearly straight, slightly shorter than mesal length; lateral margin shallowly concave inwardly; lateral carina well expanded anteriorly, gradually more obscure posteriad; posterior margin concave, about 2.5 times as wide as anterior margin; collar about 0.25 times as long as mesal pronotal length, with scattered short setae, weakly rugose; callus demarcated by a shallow transverse impression; posteromedial region of pronotum widely depressed. Scutellum ( Fig. 7 ) smooth, slightly wider than long, anteriorly swollen and gradually more depressed posteriad. Hemelytra ( Fig. 7 ) subparallel-sided, slightly narrowed toward posteriorly, impunctate, sparsely covered with short, suberect setae; endocorium 1.75 times as wide at maximum as embolium; cuneal margin 0.66 times as long as embolial margin; membrane with two weak veins, inner vein arising from base of membrane, outer vein a little remote from outer margin. Ostiolar peritreme ( Fig. 11 ) broad, elbowed at middle, strongly anglar posteriorly, gradually narrowed anteriad, slightly curved interiorly, not touching anterior margin of metapleura; outer margin of ostiolar peritreme strongly raised above level of surrounding evaporative area. Legs densely covered with short, reclining setae; all tibiae lacking distinct long spines; fore tibiae ( Figs. 12 , 16 ) armed with 10 small, fuscous teeth on ventral side; hind tibiae ( Fig. 13 ) weakly flattened; mid- and hind coxae widely separated. Abdomen ( Fig. 8 ) ventrally covered with short, suberect setae at posterior portion of respective segments.

Female genitalia ( Fig. 22 ): Genital segments (segments VII to IX) laterally covered with long, stout setae; copulatory tube ( Fig. 22 ) fused on left side of intersegmental membrane between sterna VII and VIII in dorsal view, adjacent to base of ovipositor, ovoid, shortened, consisting of tiny, membranous tube surrounded by well sclerotized wall.

Male. Unknown.

Measurements (holotype, Ψ). Body length 3.45; head length (excl. neck) 0.38; head width across eyes 0.39; vertex width 0.21; width between ocelli 0.15; length of antennal segments I-II 0.15, 0.40, (III and IV missing); length of labial segments II-IV 0.13, 0.34, and 0.22; anterior pronotal width 0.36; mesal pronotal length 0.40; basal pronotal width 0.89; length of embolial margin 0.91; length of cuneal margin 0.60; maximum width across hemelytra 0.91.

Holotype. Ψ (TKPM-IN-13226; Figs. 7–13 , 16 , 22 ), labeled “[ JAPAN] / Shirahama-rindô, / Iriomote Is., / The Ryukyus, / 1. III. 2002 / T. Ishikawa leg.” [white square] ( TKPM). Right antenna and left antennal segments III and IV are missing.

Distribution. Japan (the Ryukyus: Iriomote Is.).

Etymology. The specific name is dedicated to the late Dr. I. M. Kerzhner, one of the world’s leading heteropterists, who regretfully passed away in May, 2008.

Remarks. Montandoniola kerzhneri sp. nov. is unique among the other congeners in having the female fore tibiae furnished with the 10 small, fuscous ventral teeth; and with shortened ovoid copulatory tube, consisting of tiny, membranous tube surrounded by well sclerotized wall. In addition to these characters, this new species undoubtedly differs from Japanese congeners M. thripodes and M. pictipennis by the coloration of the labium and legs.

Biology. Unknown.

Figures

FIGURES 1 – 13. Japanese Montandoniola species. 1 – 4, M. thripodes, male (1, 2) and female (3, 4); 5, 6, M. pictipennis, male; 7 – 13, M. kerzhneri sp. nov., female, holotype. 1 – 8, Habitus, dorsal (1, 3, 5, 7) and lateral (2, 4, 6, 8) views; 9, 10, head and pronotum, dorsal (9) and lateral (10) views; 11, ostiolar peritreme and evaporative area of left metapleura, lateroventral view; 12, left fore leg, outer view; 13, left mid leg, dorsal view. Scale bars: 1.0 mm for 1 – 8; 0.2 mm for 9, 10, 12, 13; 0.1 mm for 11.

FIGURES 14 – 16. Female left fore tibiae. 14, M. thripodes; 15, M. pictipennis; 16, M. kerzhneri sp. nov. Arrows indicate minute teeth. Scale bars: 0.2 mm.

FIGURES 17 – 22. Male (17 – 20) and female (21, 22) genitalia of M. pictipennis (17 – 20), M. thripodes (21) and M. kerzhneri sp. nov. (22). 17, Pygophore with paramere, dorsal view; 18, paramere, dorsal view; 19, 20, ditto, two different orientations; 21, 22, copulatory tube, dorsal view. Scale bars: 0.1 mm.