Polymerus (Pachycentrum) unciniger, Gapon, 2014

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 : 26-27

3. Polymerus (Pachycentrum) unciniger sp. nov.

( Figs 2 C ; 3 B ; 4 С; 8; 40 C)

Material examined. Holotype. Russia: Altai Republic: bank of Teletskoe Lake , 21 June 1912 (Yurganova), male* ( ZISP).

Paratypes. Ukraine: Crimea: Bel’bek station of Sevastopol Railway [Fruktovoe Settlm.], 19 May1897 (N. Kuznetsov), 1 female ; Simferopol Distr., Taushan-Bazar [Privolnoe], 8, 9, 15, 29 June 1907 (Pliginskiy), 4 June 1907 (Kiritschenko) 11 males *, 9 females *; Tavel’ Settlm , 1 June 1907 (Kiritschenko), 2 males ; Dzhalman [Krasnoles’e] Settlm. , May 1910 (Kiritschenko), 1 female ; Agarmysh, 15, 23, 28 May , 2 June 1906 (Jakovlev), 15 June 1906 (Kiritschenro), 2 males *, 6 females *; Suuk-su cape near Gurzuf , 14 July 1948 (K. Arnoldi), 1 female ; Margala 800 m near Gurzuf , 20 June 1948 (Arnoldi), 1 male, 2 females ; “ Shakh-Mama ”, 12 May 1906 (Jakovlev), 2 females *; Lugansk Prov.: Stanitsa Luganskaya , 23 June 1929 (Talitskiy), 1 male *, 2 females ; Nyrkovo–Vyemka , steppe, 10 July 1940 (Arnoldi), 1 female ; “Donskaya Prov., Novocherkassk Distr.”, Proval’e Settlm. , 16 June 1933 (Talitskiy), 1 male * ( ZISP) . Russia: Nizhniy Novgorod Prov., Borskiy Distr, Pamyati Parizhskoy Communy Settlm. , 18 July 1979 (T. Khrynova), 1 male *; Samara Prov.: Saratov Reservoir , Podzhabiy I., 28 June 2008 (I.V. Duzhaeva), 3 males *, 1 female ; Saratov Prov.: “Samarskaya Govern.”, Pugachevsk [Pugachev], bank of Irgiz Riv. , 20 June 1925 (D’yakonov), 2 males *, 2 females ; Voronezh Prov., Kalach, 27 May , 5 June1934 (Gudim), 2 males *, 2 female *; Kamennaya Step’ preserve, 11 km S of Talovaya Settlm, 26 June 1949 (Stark), 1 female ; Krasnodar Terr. Markotkh mountain ridge near Gelendzhik , 15 July 1956 (Kurcheva), 1 male *; Pshaor mountain ridge, Goryachiy Kluch , 16 June 1956 (K. Arnoldi), 4 males *, 1 female ; Republic of Adygea: Maykopskiy Distr., nr. Nikel’ Settlm. , 21, 22 June 2000 (D.A. Gapon), 1 male *, 1 female ; Republic of Dagestan: Derb [ent] (V. Jakovlev), female ; Orenburg Prov.: near Orenburg, 13 – 14 June 1924 (A.I. Ivanov), 1 male *, 2 females ; Chelyabinsk Prov., “Troitskiy Uezd”, Berlinskiy—Tarutin [Berlin Settlm.], 6 June 1916 (N. Kuznetsov ), 3 females ; Tumen’ Prov.: Tobol’sk Distr.: Durynina Will. , 27 June 1929 (Samko), 1 male *; Altay Terr.: “Tomskaya Govern., Zmeinogorskiy Uezd”, valley of Belaya Riv. , 15 – 20 June 1910 (Tomin), 1 female ; Tigirekskiy Nat. Ress. , N51°07′ E82°59′, 5–7 July 2009 (A. Knyshov), 6 males *, 7 females ; Kemerovo Prov.: “Tomskaya Govern., Mariinskiy Uezd”: Berchikul’ Lake , 14, 15, 19 July 1911 (Gorchakovskiy), 3 males *, 6 females *; Tisul’, 16, 30 June , 7, 11 July 1911 (Gorchakovskiy), 2 males *, 6 females ; Altai Republic: Artybash Settlm., S bank of Teletskoe Lake , 16 June 1909 (Emel’yanov), 1 male *; Dzhaylau tract, N bank of Teletskoe Lake , 11 June 1901 (Ignatov), 1 female ; Khakassia Republic: Veselaya Riv., right tributary of Balyksa Riv. in upper reach of Tom’ Riv. , 5 July 1908 (Khvorov), 1 male *; confluence of Balyksa Riv. and Tom’ Riv. , 1908 (Khvorov), 1 female ; confluence of Magaza Riv. and Balyksa Riv. in upper reach of Tom’ Riv. , 19 June 1908 (Khvorov), 1 female ; mouth of Matur Riv, tributary of Abakan Riv. , 30 June 1897 (Yu. Wagner), 1 male *; Krasnoyarsk Prov.: Kozul’ka station , 66 km O of Achinsk, 22 July 1936 (Luk’yanovich), 1 female ; Tyva Republic: Fedorovka Settlm., left bank of Kaa-Khem Riv. , 19 July 1949 (Perevozchikova), 1 male * 1 female ; Irkutsk Prov.: Tayshet , 4 July 1940 (Barovskiy), 1 female ; Sakha Republic: Tamma Riv., left tributary of Lena Riv. , c. 40 km S of Yakutsk, 4 June 1973 (Vinokurov), 1 male *, 1 female ; near Khorintsy, Lena Riv. ( ZISP) . Azerbaijan: Khachmaz , 28 May 1935 (Lubishchev), 1 male * ( ZISP) . Kazakhstan: West Kazakhstan Prov.: Yanvartsevo Settlm., right bank of Ural Riv. , 22 June 1950 (Romadina), 1 male *; Solyanka Riv., left tributary of Ural Riv. , 3 – 5 July 1949 (L. Arnoldi), 9 July 1949, 6 June 1959 (Romadina), 4 males *, 7 females *; left bank of Dergul Riv. , 3 km NW of Kuznetsov, 22 June 1949 (Arnoldi), 1 female ; Akmola Prov.: “Kokchetayskiy Distr.”, “Borovsk. les. tekh.”, 30 June , 11, 12 July 1932 (V. Popov), 3 males *; East Kazakhstan Prov., “Semipalatinsk Distr.”, Irtysh Riv. , 22 May 1910 (Karavaev), 1 female ( ZISP).

Some females are included in this species conditionally; perhaps some of them belong to P. nigrita .

Diagnosis. This species differs from P. carpathicus by yellow tibiae, preapical spots on fore femora and basal stripe on cuneus. Its differences from P. nigrita consist in structure of male terminalia only. Males are easily recognised by left paramere hypophysis with superior margin less deeply concave before apex and less convex in posterior part from lateral view than in P. nigrita , with low, invisible from exterior view carina on superior margin of internal wall, and with narrow, straight, pointed apex from superior view; by vesica with short, broadly triangular posterior spicule, medial spicule with apex lying in sagittal plane of its body and looking like hook with wide base and acutely elongated apex, and with anterior left lobe, one branch of which directed upwards, other directed downwards.

Description. Length 4.20–5.05 in males and 4.60–5.30 in females.

Vestiture and colouration of body ( Fig. 40 C ) as in P. nigrita .

Right paramere ( Fig. 2C ) with obconic body.

Left paramere ( Figs 3 B ; 4 C ). Superior margin of hypophysis from lateral view less convex in posterior part and concave before apex than in P. nigrita . Apex from superior narrow, straight. Carina on superior margin of internal wall of hypophysis low, not visible from external view.

Vesica ( Fig. 8 ). Anterior and left branches of anterior left lobe directed upwards and downwards, respectively. Anterior branch wide, shorter, left one very short and wider than in previous species. Spinulate sclerite on inferior wall of anterior left lobe as in P. nigrita . Posterior left lobe of same length as in P. carpathicus , narrow, directed to left and anteriad, more or less curved to right. Inferior wall of this lobe without sclerotization. Supragonoporal area of sclerotization small, located only behind dorsal margin of secondary gonopore between bases of left anterior and posterior lobes. Posterior right lobe slightly constricted in middle. Basal sclerite on right-inferior wall of this lobe of same width and shape as in P. nigrita , not or almost reaching lobe apex. Posterior spicule very short, broadly triangular, weakly sclerotised. This spicule unusually long in one studied specimen from Azerbaijan (Khachmas). Apical part of medial spicule located in sagittal plane of spicule body and looking like large hook with wide base and acute, rather long apex directed posteriad and to right. Posterior surface of spicule apex without carina. Left wall of posterior part of vesica and posterior bladder as in P. nigrita . Weakly sclerotised field on right wall of vesica before posterior bladder without carina.

Gynatrium as in P. nigrita . Posterior margin of tectal sclerite always with small medial notch. Lateral parts of dorsal margin of interramal sclerite sometimes dipper concave than it the latter species.

Etymology. The name of this species is an adjective derived from the Latin word uncinus (hook) and the element -ger (-bearing) from the verb gero (to bear, to carry). The name reflects the shape of the medial spicule on the vesica in this species.

Distribution (Figs 17; 18). Spain (?), Ukraine, Russia (Central and South European Territories, East and West Siberia), Azerbaijan, Kazakhstan.

Distribution in Europe and China needs to be clarified. Figure of the left paramere of P. nigrita from Spain in the paper of Pagola-Carte et al. (2004) is very similar to the left paramere of P. unciniger sp. nov. Therefore it is possible to assume that the latter species is distributed in southern Europe.

The distribution of P. unciniger is sympatric with P. nigrita but distinctly has a propensity for the southern part of the common natural habitat of the both species; only in Yakutia it is advancing further to the north.

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 8. Vesica of Polymerus unciniger sp. nov., A–C, completely inflated vesica; D, E, medial spicule of vesica. Right (A), superior (B), anterior (C), posterior (D) and inferior-left (E) view. all—anterior left lobe; arb—anterior right bladder; bab –baso-apical sclerotised band; bs—basal sclerite of posterior right lobe; ms—medial spicule; pb—posterior bladder; pll—posterior left lobe; ppll—vestige of postposterior left lobe; prl—posterior right lobe; ps—posterior spicule; sps—superio-posterior spicule; ss—spinulate sclerite of anterior left lobe. Scale bare: 0.25 mm.

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.