Polymerus (Polymerus) amurensis Kerzhner, 1988

Gapon, D. A., 2014, Revision of the genus Polymerus (Heteroptera: Miridae) in the Eastern Hemisphere. Part 1: Subgenera Polymerus, Pachycentrum subgen. nov. and new genus Dichelocentrum gen. nov., Zootaxa 3787 (1), pp. 1-87 : 37-41

7. Polymerus (Polymerus) amurensis Kerzhner, 1988

( Figs 2 G ; 3 G ; 4 H ; 12 ; 16 E, F ; 40 J )

Polymerus amurensis Kerzhner, 1988a: 789 ; 1988b: 4.

Material examined. Holotype: Russia, Primorskiy Terr. “Ussuriyskiy Terr., Spasskiy Uezd”, Yakovlevka Settlm., 8 July 1926 (D’yakonov, Filip’ev), male* ( ZISP).

Paratypes: Russia: Amur Prov., Simonovo Settlm., 75 km W of Svobodniy , 6 July 1959 (Kerzhner), 1 female Khabarovsk Terr., Primorskaya Prov. ”, Beshenaya Riv. near Tsimmermanovka Settlm., 18 July 1911 (V.K. Soldatov), 1 female ; Primorskiy Terr. “Ussuriyskiy Terr., Spasskiy Uezd ”, Yakovlevka Settlm., 5, 9*, 26, 28 July 1926 (D’yakonov, Filip’ev), 3 females ( ZISP) ;.

Additional material: Russia, Primorskiy Terr. “Primorskaya Prov.”, Nikol’sk-Ussuriyskiy [Ussuriysk], 30 July 1926 (N. Kuznetsov ), 1 female ( ZISP) .

Diagnosis. Recognised by following combination of characters: all segments of antennae yellow, body surface matt, ventrally covered with silvery, dorsally with golden, slightly thickened setae, femora yellow with two black or brown rings before apices, tibiae with pale apices and yellow or light brown spines, anterior corner of corium at most with little vague brown yellow patch, cuneus brown or black with yellow apex, basal and external margins. Males distinguished by posterior right lobe of vesica without apical sclerite, with strongly sclerotised, rather wide basal sclerite and with very short and rather high longitudinal carina, not surrounded by field of sclerotization; by supragonoporal area of sclerotization broken into two separate sclerites, right of which very large; and by rather vide apical spicule with entirely membranous left wall. Females distinguished by large gynatrial dorsal sac; short medial lobe with wide base and ventral wall without sclerite; by very large medial prominences of posterior margin of tectal sclerites; and by openings of interramal lobes with dorsal margins convex laterally and strongly descending medially.

Redescription. Vestiture and colouration ( Fig. 40 J ). Body surface matt, ventrally covered with silvery, dorsally with golden, slightly thickened setae. All segments of antennae yellow. Margins of coxal cavities of prothorax with wide yellow strips. Xyphus of prothorax at least with yellow margins, often entirely yellow and sometimes with dark spot in middle. Femora yellow, with two black or brown rings before apices. Fore femora sometimes with one ring; proximal rings at all femora can be disconnected at superior surfaces, proximal ring at hind femora sometimes very broad. Tibiae yellow with black or brown short ring or spot at extreme base. Apices of tibiae pale. Setae on tibiae yellow or light brown. Superior surfaces of femora and tibiae sometimes partly black, fore and middle tibiae rarely with two equal rings, or rings at tibiae absent. Anterior corner of corium with small vague brown yellow patch. One specimen from Ussuriysk with narrow brown yellow strip at basal threequarter of length of corium and with spot on scutellar apex of same colour. Posterior margin of corium with narrow yellow strip. Cuneus light brown or brown, with wide yellow apex, basal and external margins. Dorsal surface of abdomen yellowish at base, ventral surface brown with yellowish spots. Lateral margins of ventrites with narrow yellowish strip widening at IX ventrite.

Right paramere ( Fig. 2 G ) with cylindrical body as in P. pekinensis .

Left paramere ( Figs 3 G ; 4 H ). Superior and inferior margins of hypophysis concave and straight before apex from lateral view. Hypophysis from superior view with narrow and straight apex. Carina at superior margin of internal wall of hypophysis low, not visible from external view.

Vesica ( Fig. 12 ). Both parts of spiculose plate covered with denticles. Left end of basal part of this sclerite elongated and narrower than in all previously considered species. Vestige of anterior spicule absent. Anterior branch of anterior left lobe relatively long, directed anteriad and to right; inferior and left branches shorter, directed downwards and to left respectively. Superior branch of posterior left lobe pointed, directed posteriad and slightly curved to left; inferior branch slightly longer than latter, directed downwards, without apical sclerite. Right branch of supragonoporal area of sclerotization looking like very large oval sclerite located on left side of anterior left lobe and reaching apex of its left branch. Apical margin of this sclerite acutely rounded, its surface with severallongitudinal thin carina and band of very small denticles along anterior margin. Left branch of supragonoporal area of sclerotization in form of small oval sclerite on right wall of posterior left lobe. Right margin of this sclerite continuing into short triangular sclerotised band connecting with similar band extending from posterior margin of sclerite on anterior left lobe. Dentate strip above anterior right bladder absent. Postposterior left lobe rather short, strongly swollen in middle, with short pointed apex, directed posteriad. Posterior right lobe wider than in all previously considered species. Apex of this lobe not curved upwards, without sclerite. Longitudinal carina on right wall of posterior right lobe very short and rather high, shifted from base of posterior spicule and not surrounded with field of sclerotization. Posterior spicule very narrow. Basal sclerite on right-inferior wall of posterior right lobe much longer then longitudinal carina, strongly sclerotised and rather wide. Medial spicule slightly longer, superio-posterior spicule wider than in all previous species. Superio-posterior spicule with left wall membranous along its entire length and not convex basally. Posterior bladder longer and narrower than in all previous species, with acutely rounded posterior wall.

Gynatrium ( Fig. 16 E, F ). Anterior vestibular sclerites narrowing posteriad. Anterior margin of ventral labiate plate with rather small incision. Round sclerites smaller than in all previous species of this subgenus. They almost entirely sclerotised, with several small foramina. Triangular sclerites on external margins of ring sclerites very small. Dorsal sac very large, covering dorsal labiate plate medially. Membrane of gynatrial roof without protrusion on each side of medial oviduct. Transverse membranous fold of gynatrial roof deep laterally and shallow in middle. Medial lobe as in P. pekinensis . Medial prominences of posterior margin of tectal sclerites very large, more heavily sclerotised than in all previous species, oval in posterior part, narrowing anteriad. Their internal margins converging anteriorly and posteriorly and diverging in middle. Dorsal margin of interramal sclerite with large triangular prominence in middle and deeply concave lateral parts. Dorsal margins of openings of interramal lobes convex laterally and strongly descending medially. Anterior walls of interramal lobes heavily sclerotised.

Distribution ( Fig. 18 ). Russian Far East.

Figures

FIGURE 2. Right and left parameres of Polymerus species. A–G, right paramere; H–J, left paramere. A, H–J, P. carpathicus; B, P. nigrita; C, P. unciniger sp. nov.; D, P. holosericeus; E, P. russatus sp. nov.; F, P. pekinensis; G, P. amurensis. Left (H), posterior (I) and right (J) view. Scale bare: 0.14 mm.

FIGURE 3. Left paramere of Polymerus, left view. A, P. nigrita; B, P. unciniger sp. nov.; C, P. holosericeus; D, P. russatus sp. nov.; E, P. pekinensis; F, paratype of Poeciloscytus funestus; G. P. amurensis. Scale bare: 0.14 mm.

FIGURE 4. Left paramere of Polymerus, superior view. A, P. carpathicus; B, P. nigrita; C, P. unciniger sp. nov.; D, P. holosericeus; E, P. russatus sp. nov.; F, P. pekinensis; G, paratype of Poeciloscytus funestus; H. P. amurensis. Scale bare: 0.14 mm.

FIGURE 12. Vesica of Polymerus amurensis, holotype. A, right view; B, superior view.. all—anterior left lobe; arb—anterior right bladder; bab—baso-apical sclerotised band; bs—basal sclerite of posterior right lobe; lc—longitudinal carina of posterior right lobe; ms—medial spicule; pb—posterior bladder; pll—posterior left lobe; ppll—postposterior left lobe; prl—posterior right lobe; ps—posterior spicule; sgas—supragonoporal area of sclerotisation; sp—spinulose plate; sps—superio-posterior spicule. Scale bare: 0.25 mm.

FIGURE 16. Inner female genitalia of Polymerus species. A, B, Polymerus holosericeus; C, D, P. pekinensis; E, F, P. amurensis. Gynatrium from dorsal view (A, C, E), posterior wall of gynatrium from ventral view (B, D, F). Scale bare: 0.25 mm.

FIGURE 18. Distribution of Polymerus species based on material examened.

FIGURE 40. Polymerus species, habitus. A, P. (Pachycentrum) carpathicus, male; B, P. (Pachycentrum) nigrita, female; C, P. (Pachycentrum) unciniger sp. nov., male; D, P. (s. str.) holosericeus, female; E, P. (s. str.) russatus sp. nov., male; F, P. (s. str.) russatus sp. nov., female; G, P. (s. str.) pekinensis; H, holotype of Poeciloscytus funestus, male; I, paratype of Poeciloscytus funestus, female; J, Polymerus (s. str.) amurensis, female.