Dicyphus stachydis Sahlberg 1878
Creators: name: Sanchez, Juan Antonio
name: Cassis, Gerasimos
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Miridae
Dicyphus
Dicyphus stachydis

description: DICYPHUS STACHYDIS SAHLBERG, 1878
(FIGS 3, 11 B, 28, 31 C, 39)
Dicyphus stachydis Sahlberg, 1878: 29 (original description); Carvalho, 1958: 200 (world catalogue); Schuh, 1995: 495 (world catalogue); Kerzhner & Josifov, 1999: 23 (Palaearctic catalogue).
Dicyphus stachydis wagneri Tamaninii, 1956: 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).
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).
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). 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).
Romania: Bistrita, 47.13361°N 24.49277°E, 360 m, Aug 1952, 13 adults sex unknown (AMNH). Buzan, 45.22277°N 26.72138°E, 122 m, Aug 1953, 2 adults sex unknown (AMNH). Comana, 43.89833°N 28.30500°E, 106 m, 28 Jun 1953, 1 adult sex unknown (AMNH); 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); 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, AMNH _ PBI 00341235), 3♀♀ (AMNH _ PBI 00341231, AMNH _ PBI 00341232, AMNH _ PBI 00341234) (ZISP).
Sweden: Alingsas: Kullen, 58.04166°N 12.53833°E, 102 m, 29 Aug 1939, Kemner, 2 adults sex unknown (MZLU); 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). Arild, 56.27000°N 12.58138°E, 35 m, 29 Aug 1939, 1 adult sex unknown (AMNH). Brunnby, 59.83083°N 13.53277°E, 31 m, 28 Aug 1964, Ossiannilsson, 2 adults sex unknown (MZLU). 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).
Switzerland: Uetliberg, 47.35222°N 8.48750°E, 870 m, 9 Jun 1953, Lindberg, 1♂, 1♀ (MZH).
United Kingdom: England: Bedford: Renhold, 52.16305°N 0.4025°W, 56 m, 9 Aug 1935, Leston, 4 adults sex unknown (AMNH). Bedfordshire: Maulden wood, 52.02888°N 0.44500°W, 81 m, 08 Aug 1935, Leston, 1 adult sex unknown (AMNH). Berkshire: Silwood Park, Ascot, 51.4126°N 0.63659°W, 62 m, 23 Apr 1953, Southwood, 1 adult sex unknown (AMNH). Dorset: Cranborne, Wimborne, 50.91833°N 1.92250°W, 66 m, 12 Oct 1935, P.H., 1 adult sex unknown (BMNH). Hertfordshire: Boxhill, 51.76333°N 0.47000°W, 131 m, 2 Oct 1955, Lindberg, 1 adult sex unknown (MZH). York: Kirkbymoorside, 54.28777°N 0.95944°W, 139 m, Jessop, 1 adult sex unknown (BMNH); 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). 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). Scotia, 55.95°N 3.2°W, 31 m, 3♂♂, 2♀♀ (MZH).
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.
description: Published as part of Sanchez, Juan Antonio & Cassis, Gerasimos, 2018, Towards solving the taxonomic impasse of the biocontrol plant bug subgenus Dicyphus (Dicyphus) (Insecta: Heteroptera: Miridae) using molecular, morphometric and morphological partitions, pp. 330-406 in Zoological Journal of the Linnean Society 184 on pages 398-399