Scolopostethus, Fieber, 1860

Neimorovets, Vladimir V., 2024, Review of the genus Scolopostethus Fieber, 1860 (Hemiptera: Heteroptera: Rhyparochromidae) from Central Asia with description of a new species, Zootaxa 5477 (4), pp. 401-435 : 403-404

Key to species of the genus Scolopostethus from the Central Asia

[ S. puberulus Horvath, 1887 is European species and it included in the key to species due to its resemblance to S. lethierryi and S. thomsoni despite being unknown from Central Asia.]

1. Pronotum, scutellum, and hemelytron clothed with short setae, length of which not or slightly exceeding width of hind tibia (not more than 1.3 times as long as width of hind tibia, Figs. 99–101, 105 )............................................ 2

- Pronotum, scutellum, and hemelytron clothed with long erect setae more than 1.4 times as long as width of hind tibia ( Figs. 102–104 )............................................................................................ 5

2. Setae on pronotum, scutellum, and hemelytron not more than 0.5 times as long as width of hind tibia ( Figs 99, 101 ). Paramere with broadly rounded apex in ventral view ( Figs. 120, 121 ).................................................... 3

- Setae on hemelytron 0.67–1.3 times as long as width of hind tibia ( Figs. 100, 105 ). Blade of paramere with sharp apex in ventral view ( Figs. 122, 123 ).................................................................................. 4

3. All setae on pronotum, scutellum, and hemelytron adpressed ( Fig. 99 ). Antennal segments I and II pale yellow, base of segment I darkened ( Figs. 29, 30 ). Mesosternum with acute tubercle at middle ( Figs. 85, 86 ). Hind femur uniformly dirty yellow or with pale brown area subapically ( Fig. 106 ). Blade of paramere expanded at middle in ventral view ( Fig. 120 ). Macropterous, submacropterous or brachytpterous ( Figs. 4–7 )......................................... S. affinis ( Schilling, 1829)

- Pronotum, scutellum, and hemelytron with mixture of adpressed and erect setae ( Fig. 101 ). All antennal segments dark brown to black, sometimes base of segment II paler ( Figs. 31–32 ). Mesosternum without acute tubercle at middle ( Figs. 87, 88 ). Apical part of hind femur dark brown ( Fig. 107 ). Blade of paramere not expanded at middle in ventral view ( Fig. 121 ). Always macropterous ( Figs. 12, 13 )........................................................ S. decoratus ( Hahn, 1833)

4. Setae on hemelytron 0.67–1.0 times as long as width of hind tibia width of hind tibiae ( Fig. 100 ). Antennal segment II apically darkened ( Figs. 8–11 , 33, 34 ). Ventral process of paramere trapezoidal in ventral view ( Fig. 122 ). Macropterous, submacropterous or brachytpterous................................................... S. thomsoni Reuter, 1875

- Setae on hemelytron 1.1–1.3 times as long as width of hind tibia ( Fig. 105 ). Antennal segment II uniformly yellow ( Figs. 27, 28 , 39, 40 ). Ventral process of paramere rounded in ventral view ( Fig. 123 ). Macropterous or submacropterous......................................................................................... S. puberulus Horvath, 1887

5. Fore femur dark brown to black, distinctly darker than fore tibia, usually with light (dirty yellow) base and apex ( Figs. 55, 56 ). Anterior margin of pronotum with narrow, sometimes incomplete dirty yellow edging ( Figs. 75–78 ). Paramere characteristically bent at extreme apex in ventral view and ventral process with narrowly rounded in ventral view ( Fig. 125 ). Setae on hemelytron 1.8–2.3 times as long as width of hind tibia ( Fig. 102 ). Macropterous to brachytpterous (more often, Figs. 16–19 )........................................................................................... S. pilosus Reuter, 1875

- Fore femur uniformly yellow to pale brown ( Figs. 53, 54, 59–62 ). Anterior margin of pronotum with narrow or wide dirty yellow edging ( Figs. 73, 74, 79–84 ). Paramere not bent at extreme apex in ventral view and ventral process broadly rounded in ventral view ( Figs. 124, 126 ). Macropterous, brachypterous or only macropterous.................................. 6

6. Setae on hemelytron 1.4–1.8 times as long as width of hind tibia ( Fig. 103 ). Anterior margin of pronotum with narrow or with wide dirty yellow, sometimes incomplete dirty yellow edging ( Figs. 73, 74 ). Blade of paramere somewhat widened at middle in lateral view with distinctly attenuated apex in ventral view ( Fig. 124 ). Always macropterous ( Figs. 14, 15 ).......................................................................................... S. lethierryi Jakovlev, 1877

- Setae on hemelytron 2.0–3.0 times as long as width of hind tibia ( Fig. 104 ). Anterior margin of pronotum with wide dirty yellow transverse stripe ( Figs. 79–84 ). Blade of paramere gradually tapering with narrowly rounded apex in lateral view without attenuated apex in ventral view ( Fig. 126 ). Macropterous to more often brachypterous ( Figs. 20–26 )... S. ferganensis sp. n.

Figures

FIGURES 99–105. Pubescence on the dorsal surface of the body of Scolopostethus species, lateral view: 99—S. affinis, male, brachypter; 100—S. thomsoni, male, brachypter; 101—S. decoratus, female; 102—S. pilosus, male, brachypter; 103—S. lethierryi, female; 104—S. ferganensis sp. n., male, submacropter; 105—S. puberulus, male, submacropter.

FIGURES 120–126. Left paramere of Scolopostethus species, lateral (A) and ventral (B) view: 120—S. affinis, brachypter; 121—S. decoratus; 122—S. thomsoni, macropter; 123—S. puberulus, submacropter; 124—S. lethierryi; 125—S. pilosus, brachypter; 126—S. ferganensis sp. n., macropter.

FIGURES 29–38. Antenna of Scolopostethus species: 29—S. affinis, female, macropter; 30—S. affinis, male, brachypter; 31—S. decotatus, female; 32—S. decoratus, male; 33—S. thomsoni, female, macropter; 34—S. thomsoni, male, macropter; 35—S lethierryi, female; 36—S lethierryi, male; 37—S. pilosus, female, brachypter; 38—S. pilosus, male, brachypter.

FIGURES 85–98. Mesosternum of Scolopostethus species, lateral view: 85—S. affinis, female, macropter; 86—S. affinis, male, brachypter; 87—S. decoratus, female; 88—S. decoratus, male; 89—S. lethierryi, female; 90—S. lethierryi, male; 91—S. pilosus, female, macropter; 92—S. pilosus, male, brachypter.; 93—S. puberulus, female, macropter; 94—S. puberulus, male, brachypter; 95—S. thomsoni, female, macropter; 96—S. thomsoni, male, macropter; 97—S. ferganensis sp. n., female, macropter; 98—S. ferganensis sp. n., male, macropter.

FIGURES 106–112. Posterior leg of Scolopostethus species: 106—S. affinis, male, brachypter; 107—S. decoratus, female; 108—S. thomsoni, male, brachypter; 109—S. lethierryi, female; 110—S. pilosus, female, brachypter; 111—S. puberulus, female; 112—S. ferganensis sp. n., male, brachypter.

FIGURES 4–7. Scolopostethus affinis, dorsal (A) and lateral (B) view: 4—female, brachypter; 5—female, macropter; 6—male, brachypter; 7—male, macropter.

FIGURES 8–13. Scolopostethus thomsoni and S. decoratus, dorsal (A) and lateral (B) view: 8—S. thomsoni, female, macropter; 9—S. thomsoni, female, brachypter; 10—S. thomsoni, male, macropter; 11—S. thomsoni, male, brachypter; 12—S. decoratus, female; 13—S. decoratus, male.

FIGURES 25–28. Scolopostethus ferganensis sp. n. and S. puberulus, dorsal (A) and lateral (B) view: 25—female, brachypter; 26—male, brachypter; 27—S. puberulus, female, macropter; 28—S. puberulus, male, submacropter.

FIGURES 39–46. Antenna of Scolopostethus species: 39—S. puberulus, female, macropter; 40—S. puberulus, male, submacropter; 41—S. ferganensis sp. n., female, brachypter; 42—S.ferganensis sp. n., female,submacropter;43—S.ferganensis sp. n., female, macropter; 44—S. ferganensis sp. n., male, brachypter; 45—S. ferganensis sp. n., male, submacropter; 46—S. ferganensis sp. n., male, macropter.

FIGURES 47–62. Anterior leg of Scolopostethus species: 47—S affinis, male, brachypter; 48—S affinis, female, brachypter; 49—S. decoratus, male; 50—S. decoratus, female; 51—S. thomsoni, male, brachypter; 52—S. thomsoni, female, macropter; 53—S. lethierryi, male; 54—S. lethierryi, female; 55—S. pilosus, male, brachypter; 56—S. pilosus, female, macropter; 57—S. puberulus, male, submacropter; 58—S. puberulus, female, macropter; 59—S. ferganensis sp. n., female, macropter; 60—S. ferganensis sp. n., female, brachypter; 61—S. ferganensis sp. n., male, macropter; 62—S. ferganensis sp. n., male, brachypter.

FIGURES 63–84. Pronotum of Scolopostethus species: 63—S. affinis, female, macropter; 64—S. affinis, female, brachypter; 65—S. affinis, male, macropter; 66—S. affinis, male, brachypter; 67—S. thomsoni, female, macropter; 68—S. thomsoni, female, brachypter; 69—S. thomsoni, male, macropter; 70—S. thomsoni, male, brachypter; 71—S. decoratus, female; 72—S. decoratus, male; 73—S. lethierryi, female; 74—S. lethierryi, male; 75—S. pilosus, female, macropter; 76—S. pilosus, female, brachypter; 77—S. pilosus, male, macropter; 78—S. pilosus, male, brachypter; 79—S. ferganensis sp. n., female, brachypter; 80—S. ferganensis sp. n., female, submacropter; 81—S. ferganensis sp. n., female, macropter; 82—S. ferganensis sp. n., male, brachypter; 83—S. ferganensis sp. n., male, submacropter; 84—S. ferganensis sp. n., male, macropter.

FIGURES 14–19. Scolopostethus lethierryi and S. pilosus, dorsal (A) and lateral (B) view: 14—S. lethierryi, female; 15—S. lethierryi, male; 16—S. pilosus, female, brachypter; 17—S. pilosus, female, macropter; 18—S. pilosus, male, brachypter; 19— S. pilosus, male, macropter.

FIGURES 20–24. Scolopostethus ferganensis sp. n., dorsal (A) and lateral (B) view: 20—male, brachypter, holotype; 21— female, submacropter; 22—male, submacropter; 23—female, macropter; 24—male, macropter; 20C—holotype labels of S. ferganensis sp. n.