Scolopostethus ferganensis, Neimorovets, 2024

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 : 410-413

Scolopostethus ferganensis sp. n.

( Figs. 20–26 , 41–46 , 59–62 , 79–84 , 97, 98 , 104 , 112 , 119 , 126 , 133 )

Scolopostethus lethierryi Jakovlev, 1877 in Kiritshenko (1964): 181 (partim).

Types examined. Holotype: ♂, KYRGYZSTAN: tract Ak-Terek [Jay-Terek], 5 km North of Gava, Fergana Range , Kiritshenko leg., 31 VIII 1937 . Paratypes: KYRGYZSTAN: tract Ak-Terek [Jay-Terek], 5 km North of Gava, Fergana Range , Kiritshenko leg., 17, 30, 31 VII, 01, 08, 18, 19, 24, 31 VIII, 01, 02, 03, 06, 08, 11, 15, 16, 17, 19, 20, 21, 23, 26, 27, 28 IX 1937, 64♀♀, 69♂♂ .

Other material examined. KAZAKHSTAN: near Verny [Almaty], E. Poyarkov leg., IV 1904, 1♂ ; Karasai, Jagan-Ata, Karatau , Lukyanovich leg., 17–29 V 1936, 1♀ ; UZBEKISTAN: Tashkent , Zarudny leg., 19–20 X 1907, 16 X –31 XII 1909, 8♀♀, 3♂♂ ; Agalyk south of Samarkand , Kirshenblat leg., 19 X 1935, 1♂ ; Bukhara nr Termez , Kiritshenko leg., 17 VI 1917, 1♀ ; Scobelev [Fergana], E. Shestoperov leg., 20 VI 1917, 20 IV 1919, 3♀♀, 1♂ ; Scobelev [Fergana], 1 IV 1919, 1♂ ; Opshte-say, Karzhantau , Obukhova leg., 22 III 1940, 1♂ ; Kara-Alma, Fergana Range , K. Arnoldi leg., 22, 26 VI, 01, 16 VII, 13, 20 VIII, 10, 11 IX 1945, 8♀♀, 9♂♂ ; Valley of the Arslanbob [Arstanbap] River , 1400–1600 m, Fergana Range, L. Arnoldi, 14 IX 1950, 3♀♀, 2♂♂ ; Frunze ( Pishpek ) [Bishkek], Shnitnikov leg., 27 IV –1 V 1930, 1♂ ; gorge of the river Tuyuk, Alexander Range [Kyrgyz Ala-Too Range], Shnitnikov leg., 11 VII 1931, 3♀♀, 1♂ ; Arkit, Khodzha-Ata River, Chatkal Range , K. Arnoldi leg., 8 IX 1945, 1♀ ; Khodzha-Ata-Su, Namangan Uezd [70 km north of Tash-Kumyr, Aksy District], Dzenslitovskaya leg., 17 VIII 1927, 1♀, 1♂ ; TAJIKISTAN: Khozor-mech-ob River [Khazormech], Iskanderkul Lake , Kiritshenko leg., 26 IX 1943, 28, 21, 30 VII, 03, 15, 18, 19, 20 VIII 1947, 52♀♀, 41♂♂ ; Verenkul Lake nr Iskanderkul Lake , Kiritshenko leg., 08, 21 VIII 1947, 2♂♂ ; northwestern shore of Lake Iskanderkul, The Gissar Range , Kiritshenko leg., 15 VII, 24 VIII 1947, 3♀♀, 1♂ ; Kobadiyan [Qubodiyon], Gussakovsky leg., 23 VI, 01, 8, 15 VII 1934, 5♀♀, 3♂♂ ; Khochildyar [Khochildyor], Noudzhy [Nadzh], Gissar valley , Kiritshenko leg., 24 II, 19 VI 1947, 18♀♀, 17♂♂ ; Dzhar-bulak River [Dzharbulak], Rengan-tau Ridge , Kiritshenko leg., 27 IV 1943, 1♂ ; Novobad [Navobod] nr Stalinabad [Dushanbe], Kiritshenko leg., 17 II 1944, 1♀ ; tract Kvak, headwaters of the Kondara River [about 30 km north of Dushanbe], Kiritshenko leg., 5 VI 1943, 30 IV, 4 V 1944, 10♀♀, 7♂♂ ; Kondara, 1100 m, valley of the Varzob River , Gussakovsky leg., 29–30 VII 1945, 2, 26 VI 1946, 1♀, 3♂♂ ; left bank of the Varzob River nr the Kondara River , Kiritschenko leg., 28 IV 1944, 2♂♂ ; Gorge Kondara, valley of the Varzob River , Kiritschenko leg., 8 II 1944, 2♀♀, 2♂♂ ; left bank of the Iskander Darya River near the source, Kiritshenko leg., 12 VII 1947, 2♀♀ ; right bank of the Iskander Darya River near the source, Kiritshenko leg., 12, 16 VII, 05, 11 VIII 1947, 6♀♀, 1♂ ; Floodplain of the Zeravshan River, Penjikent [Panjakent], Kiritshenko leg., 30 XI 1943, 16♀♀, 16♂♂ ; Penjikent [Panjakent], valley of the Zeravshan River , Kiritshenko leg., 27 XI, 05, 6, 16 XII 1943, 12♀♀, 5♂♂ ; Khurmi, right bank of the Zeravshan River [nr Panjakent], Kiritschenko leg., 3, 18 XII 1943, 7♀♀, 5♂♂ ; Gazni, right bank of the Varzob River , Kiritschenko leg., 10 II 1944, 4♀♀, 2♂♂ ; Khodzha-Obigarm, southern slope of the Gissar Range , Kiryanova leg., 22, 26, 28 V 1944, 4♀♀, 2♂♂ ; Khodzha-Obigarm, southern slope of the Gissar Range , Kiritshenko leg., 16, 21, 25, 26, 27, 29 IX 1943, 12 VII 1947, 34♀♀, 14♂♂ ; Kalai-Vamar, Panj River, Western Pamir , Lupova leg., 02 IX 1937, 1♀ ; The territory of the Pamir Botanical Garden [Khorog], 2300 m, N. Medvedeva leg., 10 VII 1970, 1♀ ; TURKESTAN, collection of V. Jakovlev, 1♀ .

Diagnosis. Dorsum clothed with long, whitish, erect setae 2.0–3.0 times as long as width of hind tibia ( Fig. 104 ). Pronotal collar and adjacent area of anterior part of pronotum pale yellow to pale brown. Legs without dark pattern, pale yellow to light brown. Ventral process of paramere widely rounded; blade somewhat expanded at middle and narrowed towards apex in dorsal view; blade tapers towards the apex in lateral view ( Fig. 126 ).

Description.

Body. Total length: 3.2–4.2 mm in female and 2.9–3.6 mm in male. Most of studied specimens brachypter, rarely macropter or submacropter, with transitional forms differing in proportions of pronotum ( Figs. 79–84 ). Body, elongate-oval, more or less flattened dorsally, surface matt.

Pubescence of head, pronotum, scutellum, hemelytron. Head, pronotum, and hemelytron with dense, long whitish erect setae 2.0–3.0 times as long as width of hind tibia ( Fig. 104 ). All legs covered with short semiappressed setae 0.5–0.75 times as long as width of hind tibia in middle. Fore femur also covered with scarce long erected setae 1.2–1.4 times as long as width of hind tibia.

Punctures on head, pronotum, scutellum and hemelytron strong and deep. Punctuation on pronotum sparser than on scutellum. Punctures on corium arranged in three rows, along medial fracture and two parallel rows along clavus, apex of corium with irregular punctures.

Coloration. Head usually dark-brown to black, rarely brown or pale brown. Clypeus dirty yellow, rarely dark brown. Antennal segment I completely pale yellowish; antennal segment II pale yellowish, with dark brown apical one-fourth; antennal III segment dark brown with pale yellowish basal third; antennal segment IV entirely dark brown ( Figs. 41–46 ). Pronotal collar pale brown to pale yellow, sometimemes reddish. Lateral carina of pronotum whitish to pale yellow. Anterior part of pronotum brown to dark brown, rarely black, with more or less expressed dirty yellow edging anteriorly and posteriorly, and sometimes with dirty orange midline. Posterior part of pronotum, pale yellow to pale brown, with two brown, elongated, diffuse spots on humeral angles and sometimes with two darkened areas at sides of midline near hind margin. Scutellum dark brown, usually of same color with anterior lobe of pronotum, often with narrow orange markings on basal corners and dirty orange midline in apical half. Light area of hemelytron whitish to pale yellow ( Figs. 20–26 ). Corium with wide brown to dark brown shading along apical margin and and typically with two large, elongate, dark brown spots at middle, one on exocorium close to costal margin and on endocorium, usually connected with apical darkened area by a brown line along claval suture. Membrane whitish, translucent, veins of membrane slightly darkened in macropter specimens. All legs light brownish or yellow completely.

Head. Vertex between eyes 3.1–3.4 times as wide as eye width in dorsal view in females, and 2.9–3.3 in males. Head 1.6–1.7 times as wide as length of antennal segment I.

Pronotum slightly expanded posteriorly in brachypterous specimens, with pronotum at base 1.2–1.3 times as wide as long in famales, and 1.1–1.2 times as wide as long in males (PW / PA, Fig. 1 ); in macropterous specimens pronotum trapezoidal, at base 1.4–1.5 times as wide as long in females, and 1.27–1.3 times as wide as long in males as wide as long; lateral margin slightly concave at middle ( Figs. 79–84 ). Anterior lobe of pronotum convex, especially in male, in brachypterous specimens 1.5–1.7 times as long as posterior lobe in females and 1.9–2.0 times as long as posterior lobe in males; anterior lobe of pronotum 1.2–1.4 times in females and 1.5–1.6 times in males as long as posterior lobe in macropterous specimens. Posterior lobe of pronotum flat. Mesosternum without acute tubercle at middle ( Fig. 97, 98 ).

Scutellum without Y-shaped prominence or with indistinct one.

Hemelytron. Clavus with three rows of large punctures, usually with more or less pronounced brown line along apical part of claval vein. Macropterous to brachypterous, latter more common.

Legs. Fore femur with two rows of small spines on inner surface and large spine located at middle of top row, sometimes this tooth not developed ( Figs. 59–62 ). Fore tibia distinctly dilated at apex, somewhat arcuate in female, strongly arcuate in male, with a row of minute spines running along inner surface. Apex of fore tibia in male equipped with two distinctly larger spines. Segment III of hind tarsus 1.4–1.7 times as long as first and second combined.

Male genitalia. Lobe on inner margin of dorsal opening of pygophore almost triangular with slightly curved anterior margin ( Fig. 119A ). Aedeagus with typical structure for Rhyparochrominae ( Fig. 133 ). Ventral process of paramere widely rounded, apical margin or it with long setae extending from small tubercles; blade flattened, somewhat expanded at middle and narrowed towards apex in ventral view; apex of blade somewhat bent inward in lateral view; dorsal process narrow, conical ( Fig. 126 ).

Measurements given in Appendix 2 ( Tables 1–4 ).

Scolopostethus ferganensis sp. n. is most similar to S. pilosus and S. lethierryi in the body proportions, coloration, and the long vestiture of dorsum ( Figs. 102–104 ), but these species differ in several features. Both S. pilosus and S. lethierryi differ from S. ferganensis sp. n. in the narrow, sometimes incomplete dirty yellow edging of the anterior margin of pronotum ( Figs. 73–78 ). S. pilosus differs from S. ferganensis sp. n. in the generally larger sizes, 3.8–4.2 mm in females and 3.6–3.9 mm in male; the fore femur is dark brown to black, distinctly darker than the fore tibia; the paramere characteristically bent at extreme apex in ventral view ( Fig. 125 ). S. lethierryi differs from S. ferganensis sp. n. in the oblique setae on the hemelytron which are 1.4–1.8 times as long as width of hind tibia ( Fig. 103 ), the blade of paramere with distinctly attenuated apex in lateral view ( Fig. 124 ). S. lethierryi only macropterous.

Distribution. Kazakhstan, Uzbekistan, Kyrgyzstan, Tajikistan ( Fig. 136 ). All indications of S. lethierryi by Kiritshenko (1964) belong to S. ferganensis sp. n.

Etymology. The species name is derived from the type locality, the Fergana Range, Kyrgyzstan.

Natural history and Bionomics. Kiritshenko (1964, p. 181) recorded the banks of mountain rivers with Heracleum on moist soil as a specific biotope for «Sc.[olopostethus] sp.». This article contains the records of the geographical collection points of this unknown species, which equal to the locations of S. ferganensis sp. n. given above.

Figures

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.

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 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 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 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 117–119. Pygophore of Scolopostethus species: 117—S. lethierryi; 118—S. puberulus, submacropter; 119—S. ferganensis sp. n., macropter.

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 131–133. Aedeagus of Scolopostethus species, dorsal (A) and lateral (B) view: 131—S. pilosus, brachypter; 132—S. puberulus, brachypter; 133—S. ferganensis sp. n., macropter.

FIGURES 1–3. The measurement scheme of different parts of body (1), abbreviations of the parts pygophore (2) and paramere (3) of Scolopostethus species: 1A—Head, dorsal view: DE—distance between eyes; EW—eye width; HW—head width. 1B—Head, lateral view: EH—eye height. 1C—Pronotum, dorsal view: PA—length with humeral angles; PL—medial length; LA—length of anterior pronotal lobe; LP—length of posterior pronotal lobe along midline; PW—maximal width of pronotum. 1D—Antenna: AL—antenna length; AI—length of antennal segment I; AII—length of antennal segment II; AIII—length of antennal segment III; AIV—length of antennal segment IV; AW—width of antennal segment II at midpoint. 1E—Hind leg: TI—length of tarsal segment I; TII—length of tarsal segment II; TIII—length of tarsal segment III; TW—width of hind tibia at midpoint. 1F—Body: BL—body length. 2—Pygophore: AO—anterior part of the dorsal opening; LO—lobe on the inner margin of the dorsal opening; PO—posterior part of the dorsal opening. 3—Paramere: BA—blade; BW—blade width at base; VW—ventral process width; VP—ventral process; DP—dorsal process; DW—dorsal process width; BS—base.

FIGURES 134–137. Localities of Scolopostethus species on the territory of former Soviet Central Asia based on materials from the ZISP collection: 134—S. decoratus; 135—S. lethierryi (red circle) and S. pillosus (blue circle); 136—S. ferganensis sp. n.; 137—S. thomsoni. Used map: https://www.shadedrelief.com/world/Data/map1_type.jpg by Tom Patterson, February 2018.