Dicyphus stachydis, SAHLBERG, 1878

DICYPHUS STACHYDIS SAHLBERG, 1878 View in CoL

( FIGS 3, 11 B, 28, 31 C, 39)

Dicyphus stachydis Sahlberg, 1878: 29 View in CoL (original description); Carvalho, 1958: 200 (world catalogue); Schuh, 1995: 495 (world catalogue); Kerzhner & Josifov, 1999: 23 (Palaearctic catalogue).

Dicyphus stachydis wagneri Tamaninii, 1956 View in CoL : Tamanini (1956) (original description; subspecies).

Materials examined

Bulgaria: Morava , 43.50833°N 25.14972°E, 154 m, 21 May 1944, Stehlik, 4 adults sex unknown ( AMNH); 21 May 1944, Stehlik, 1 adult sex unknown ( AMNH) GoogleMaps .

Hungary: Budapest: Jýnos h., 47.49972°N 19.03916°E, 136 m, 2 Apr 1916, Györffy, 1 adult sex unknown ( HNHM); 1 Oct 1929, Biro, 1 adult sex unknown ( HNHM) GoogleMaps .

Czech Republic: Zlinsky: Valasske: Klobouky , 49.0816ºN 18.0117ºE, 450 m, 17 Aug 2009, ex. Stachys silvatica, Sanchez, Kment & Pennaroli , 8 ♂♂ ( IMIDA _ ENT 0000093 , IMIDA ENT0000095 , IMIDA_ ENT 0000096, IMIDA_ENT 0000097, IMIDA_ENT 0000101, IMIDA_ENT 0000105, IMIDA_ENT 0000106, IMIDA _ ENT 0000110 ), 8♀♀ ( IMIDA _ ENT 00000098 - IMIDA _ ENT 00000100 , IMIDA_ENT 00000104, IMIDA_ENT 00000108, IMIDA_ENT 00000674- IMIDA _ ENT 00000676 ) GoogleMaps . Zlinksy: Valasske: Klobouky : Kralovec Mountain , 49.07574ºN 18.01595ºE, 589 m, 17 Aug 2009, ex. Atropa bella-donna, Sanchez, Kment & Pennaroli , 11♂♂, 7♀♀ ( IMIDA _ ENT 00000141 - IMIDA _ ENT 00000158 ), 5♂♂, 3♀♀ ( IMIDA _ ENT 00000202 - IMIDA _ ENT 00000209 ) ( IMIDA) GoogleMaps .

Romania: Bistrita, 47.13361°N 24.49277°E, 360 m, Aug 1952, 13 adults sex unknown ( AMNH) GoogleMaps . Buzan, 45.22277°N 26.72138°E, 122 m, Aug 1953, 2 adults sex unknown ( AMNH) GoogleMaps . Comana, 43.89833°N 28.30500°E, 106 m, 28 Jun 1953, 1 adult sex unknown ( AMNH) GoogleMaps ; 18 May 1954, Sienkiewicz, 1 adult sex unknown ( AMNH) . Sinaia, 45.33083°N 25.55527°E, 793 m, Jul 1955, 1 adult sex unknown ( AMNH) GoogleMaps ; 13 Sep 1957, Sienkiewicz, 1 adult sex unknown ( AMNH) ; 13 Sep 1957, Sienkiewicz, 1 adult sex unknown ( AMNH) ; 20 Sep 1957, Sienkiewicz, 1 adult sex unknown ( AMNH) ; 18 Aug 1959, Cant., 1 adult sex unknown ( AMNH) ; 26 Aug 1960, Sienkiewicz, 1 adult sex unknown ( AMNH) ; 11 Sep 1962, Sienkiewicz, 1 adult sex unknown ( AMNH) .

Russia: Krasnodar Terr.: Novokubansk [Kubanskaya St.] nr Armavir , 45.11167ºN 41.01828ºE, 153 m, 8 Jul 1934, Zimin, 2♂♂ ( AMNH _ PBI 00341233 About AMNH , AMNH _ PBI 00341235 About AMNH ), 3♀♀ ( AMNH _ PBI 00341231 About AMNH , AMNH _ PBI 00341232 About AMNH , AMNH _ PBI 00341234 About AMNH ) ( ZISP) GoogleMaps .

Sweden: Alingsas: Kullen , 58.04166°N 12.53833°E, 102 m, 29 Aug 1939, Kemner, 2 adults sex unknown ( MZLU) GoogleMaps ; 29 Aug 1959, 1 adult sex unknown ( AMNH) . Hýganý: Arild , 56.27000°N 12.58138°E, 35 m, 29 Aug 1939, Kemner, 1 adult sex unknown ( MZLU) GoogleMaps . Arild , 56.27000°N 12.58138°E, 35 m, 29 Aug 1939, 1 adult sex unknown ( AMNH) GoogleMaps . Brunnby , 59.83083°N 13.53277°E, 31 m, 28 Aug 1964, Ossiannilsson, 2 adults sex unknown ( MZLU) GoogleMaps . Vg., Kinnekulle , 1 Jul 1928, Lindberg, 1 adult sex unknown ( MZLU) . Skane Lan: Arild , 56.27000°N 12.58138°E, 35 m, 20 Aug 1937, Lindberg, 4♂♂ ( MZH) GoogleMaps .

Switzerland: Uetliberg , 47.35222°N 8.48750°E, 870 m, 9 Jun 1953, Lindberg, 1♂, 1♀ ( MZH) GoogleMaps .

United Kingdom: England: Bedford: Renhold , 52.16305°N 0.4025°W, 56 m, 9 Aug 1935, Leston, 4 adults sex unknown ( AMNH) GoogleMaps . Bedfordshire: Maulden wood, 52.02888°N 0.44500°W, 81 m, 08 Aug 1935, Leston, 1 adult sex unknown ( AMNH) GoogleMaps . Berkshire: Silwood Park, Ascot , 51.4126°N 0.63659°W, 62 m, 23 Apr 1953, Southwood, 1 adult sex unknown ( AMNH) GoogleMaps . Dorset: Cranborne, Wimborne , 50.91833°N 1.92250°W, 66 m, 12 Oct 1935, P.H., 1 adult sex unknown ( BMNH) GoogleMaps . Hertfordshire: Boxhill , 51.76333°N 0.47000°W, 131 m, 2 Oct 1955, Lindberg, 1 adult sex unknown ( MZH) GoogleMaps . York: Kirkbymoorside , 54.28777°N 0.95944°W, 139 m, Jessop, 1 adult sex unknown ( BMNH) GoogleMaps ; 11 Sep 1982, Jessop , 1 adult sex unknown ( BMNH) . Springwood , 54.27444°N 0.93444°W, 88 m, 11 Sep 1982, Jessop, 1 adult sex unknown ( BMNH) GoogleMaps . Well , 25 Jun 1988, 1 adult sex unknown ( BMNH) ; 20 Oct 1988, 1 adult sex unknown ( BMNH) . Scotland: Morayshire: Forres , 57.61111°N 3.61055°W, 106 m, 1 adult sex unknown ( AMNH) GoogleMaps . Scotia , 55.95°N 3.2°W, 31 m, 3♂♂, 2♀♀ ( MZH) GoogleMaps .

Diagnosis

Dicyphus stachydis is recognized by the following combination of characters: macropters and brachypters in both sexes; body length 4.02–4.51 mm in macropterous males, 2.09–3.52 mm in brachypterous males, 4.07–4.68 mm in macropterous females, 2.85–3.81 mm in brachypterous females; body mostly stramineous and orange, with dark-brown markings ( Fig. 3); frons+vertex with dark brown X-shaped marking, reaching posteromedial angle of eyes; clypeus mostly stramineous, with dorsal and ventral embrownment; mandibular plate stramineous; maxillary plates dark brown; propleuron with prominent shiny dark-brown transverse band; faint brown markings on corial fracture and tip of cuneus in macropters; AI short, mostly stramineous, with subbasal and subapical red stramineous annulations, latter sometimes more reddish brown; AII mostly stramineous with subbasal brown annulation and distal 1/4 brown; left paramere apophysis robust and short, with weakly expanded spatulate apex, outer margin smooth ( Fig. 11B); aedeagus with three endosomal lobes, and two large, symmetrical, weakly arcuate lobal sclerites ( Fig. 31C).

Redescription

Males. Macropters and brachypters examined.

Coloration ( Fig. 3): Dorsum mostly stramineous with dark-brown markings, sometimes with orange/ red markings or highlighting, rarely more intensely dark brown. Head: mostly stramineous, frons+vertex with a short, X-shaped dark-brown marking, extending to posteromedial angles of eyes; vertex orange; postocular margins of head orange; gula and bucculae stramineous; clypeus stramineous with medium brown highlighting dorsally; mandibular plates stramineous; maxillary plate embrowned. Antennae: AI mostly stramineous, with faint subbasal and darker subapical reddish brown annulations, sometimes annulations faint; AII mostly stramineous, with subbasal annulation and distal 1/4 dark brown; AIII and AIV concolorous, uniformly light to medium brown; antennae often paler overall in brachypters, with AII sometimes without brown markings, or faint at most, and AIII and AIV paler brown to stramineous. Pronotum: collar whitish to stramineous, translucent; callosite region mostly stramineous, sometimes with variable embrownment, occasionally with two or three dark brown spots laterally in macropters and brachypters; disk stramineous, humeral angles embrowned. Thoracic pleura and sterna: propleuron most often with shiny dark-brown transverse band, sometimes not extending to the propleural suture, ventral margin whitish, sometimes more stramineous overall, with reddish highlighting, more so in some brachypters; mesobasisternum most often medium brown, sometimes bicoloured with lateral regions stramineous; mesepimeron whitish to stramineous; metepisternum varying from mostly medium brown to brown intermixed with stramineous highlighting, peritreme sometimes dark brown. Mesoscutum: mostly orange to stramineous, with faint embrownment laterally. Scutellum : lateral angles broadly pale stramineous with pale orange brown stripe along midline. Hemelytra : translucent, mostly stramineous to pale brown; with costal fracture and tip of cuneus with pale brown to reddish brown markings in macropters. Abdomen: venter mostly stramineous to whitish.

Structure: Head: interocular distance 1.11–1.51× greater than eye width in macropters, 1.04–1.54× in brachypters. Antennae: AI 1.42–1.84× longer than interocular distance in macropters, 1.39–1.87× in brachypters; AII length 0.96–1.21× posterior width of pronotum in macropters, 1.09–1.49× in brachypters. Pronotum: disk 1.11–1.49× longer than callosite region in macropters, 0.58–0.95× in brachypters. Male genitalia: left paramere apophysis robust and short, with apex weakly spatulate, with outer margin smooth, setae of sensory lobe greatly elongate ( Fig. 11B); aedeagus with three endosomal lobes, with pair of large, moderately arcuate endosomal lobal sclerites ( Fig. 31C).

Females. Macropters and brachypters examined. Coloration, vestiture, texture and structure mostly as in males. Head: interocular distance 1.15–1.62× greater than eye width in macropters, 1.12–1.42× in brachypters. Antennae: AI 1.33–1.56× longer than interocular distance in macropters, 1.37–1.82× in brachypters; AII 0.84–1.01× greater than posterior pronotal width in macropters, 1.10–1.42× longer in brachypters. Pronotum: disk 1.27–1.56× longer than callosite region in macropters, 0.65–0.99× in brachypters.