Euryopicoris Reuter 1875
Creators: name: Tatarnic, Nikolai J.
name: Cassis, Gerasimos
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Miridae
Euryopicoris

description: EURYOPICORIS REUTER (FIGS 3, 26–27)   
 Euryopicoris Reuter, 1875b: 11 (gen. nov.; type species: Capsus nitidus Meyer-Dür, 1843 (by monotypy); Stichel, 1933: 235 (key); Hedicke, 1935: 58 (key); Kiritshenko, 1951: 127 (key); Wagner, 1952: 96, 105 (key, descr.); Carvalho, 1955: 66 (key); Euryopicoris Reuter, 1875b: 24 (typogr. error, key); Reuter, 1875b (1): 87; (2): 99 (key, descr.); Reuter, 1891: 60, 158 (descr., key); Hueber, 1906: 4, 11 (key, descr.); Kirkaldy, 1906: 131 (cat.); Oshanin, 1910: 790 (cat.); Reuter, 1910: 147 (cat.); Carvalho, 1952: 73 (cat.); Carvalho, 1958: 11 (cat.); Wagner & Weber, 1964: 274 (descr.); Wagner, 1973: 51 (descr.); Schuh, 1995: 53 (world cat.).   
 Diagnosis: Distinguished from other genera by the combination of punctate, coleopteroid hemelytra and curved pro- and mesotibiae.   
 Redescription: Both sexes usually coleopterous, males rarely macropterous. 3–4.5 mm. Coloration (Fig. 3): nearly uniform glossy black, sometimes with yellowbrown at apices of femora and antennal segments, hemelytra of macropterous individuals reddishbrown; eyes red. Surface and vestiture (Figs 3, 26A–F, H): surface glossy; head smooth with radiating folds emanating from centre of vertex; pronotum irregularly rugulose anteriorly, punctate posteriorly; scutellum rugulose; hemelytron punctate. Body with sparse distribution of simple setae, mostly on ventral part of head and ventral and lateral surfaces of body; antennae and legs with semi-erect spine-like setae interspersed with longer, thicker spines, particularly on AI and tibiae. Structure: head (Figs 3, 26A–E): transverse, broader than anterior of pronotum; vertex flat, posterior margin thin, weakly bisinuate; eyes small and rounded, substylate; head height approximately three times eye height; frons broadly rounded, confluent with clypeus; buccula thin; labium (Fig. 26D, E): reaches mesocoxae, LI short and thick. Antennae (Figs 3, 26A–E): insertion in front and below ventral margin of eye; short, approximately as long as body; AI swollen, about two times length of eye height; AIII shorter than AIV. Thorax (Figs 3, 26A, B, E–G): pronotum short, trapezoidal and nearly flat, posterior slightly broader than head, collar absent, callosite region weakly tumescent, lateral margins rounded, humeral angles broadly rounded, posterior margin weakly medially cleft; mesoscutum not visible; scutellum transverse; metathoracic spiracle prominent and elongate, surrounded by a thin band of evaporative bodies; MTG external efferent system broad, triangular, and swollen, ostiole vertically orientated, opens laterally, peritreme tear-shaped, orientated vertically, surrounded by evaporative bodies. Hemelytra (Figs 3, 26A): macropterous: extending beyond apex of abdomen; costal margin weakly convex, nearly straight; membrane with single cell. Coleopterous individuals: long, partially covering tergite VI; undivided; lateral margins rounded, posterior margins weakly rounded. Legs (Figs 3, 26H): metafemora slightly incrassate; fore- and mesotibiae distinctly curved and thickened; pretarsi with fleshy pulvilli. Abdomen (Fig. 3): pear-shaped in both sexes, becoming conical at apex. Male genitalia (Fig. 27A–C): pygophore conical, genital opening narrow, posterior margin weakly sinuate, with shallow concavity below left paramere; both parameres long and thin basally; left paramere with tumescent sensory lobe, apophysis angled upwards, apically hooked; right paramere with angled apical club, apicolateral margin recurved; phallotheca broad basally, apically tapering; ductus seminis elongate, basally with flexible ribbing, subapically with elongate, weakly sclerotized section lacking flexible ribbing; secondary gonopore rounded, sclerotized, and U-shaped with prised operculum and fine scale-like texturing; endosoma with a single spine-like spicule. Female genitalia (Fig. 27E, F): sclerotized rings widely separated, strongly sclerotized, oval, lateral, and medial margins and adjacent portions of DLP strongly upturned; lateral margins of DLP moderately sclerotized, medially with transverse bilaterally sulcate sclerotized plate (similar to the inter-ramal bridge in Labops), middle of plate a small carinate point projecting into bursa copulatrix; posterior margin of VLP weakly sclerotized; posterior wall of bursa copulatrix simple and plate-like, medially membranous, laterally weakly sclerotized; vestibulum symmetrical, opening bordered by short, narrow paired sclerites.   
 Diversity and distribution: There are two species of Euryopicoris, with Euryopicoris fennicus known only from Finland and Euryopicoris nitidus broadly distributed across central Europe into Siberia.   
 Included species: Eu. fennicus Wagner, 1954 Finland   
 Eu. nitidus (Meyer-Dür, 1843) * Central and North Europe; Siberia   
 Biology and host plant associations: Euryopicoris nitidus is found in mountain meadows and is said to live on grasses. Adults are found from June to August. This species overwinters as eggs (Wagner, 1973). There is no biological information for Eu. fennicus.   
 Remarks: Euryopicoris is similar to Anapus and Barbarosia in general structure. Although the secondary gonopore of Euryopicoris is most similar to that of Anapus, the lack of prominent sclerotized processes on the female posterior wall, the punctate hemelytra, and the curved fore- and mesotibiae of Euryopicoris set it apart. Euryopicoris shares punctate coleopteroid hemelytra and a bulging frons with Barbarosia, but the structure of the DLP in Euryopicoris is relatively simple in contrast to the complexity expressed in Barbarosia. Results of both unweighted and implied weighting phylogenetic analyses placed these three genera in a monophyletic clade, which together form the sister group to Myrmecophyes, Labops, and Scirtetellus.
description: Published as part of Tatarnic, Nikolai J. & Cassis, Gerasimos, 2012, The Halticini of the world (Insecta: Heteroptera: Miridae: Orthotylinae): generic reclassification, phylogeny, and host plant associations, pp. 558-658 in Zoological Journal of the Linnean Society 164 (3) on pages 599-601, DOI: 10.1111/j.1096-3642.2011.00770.x, http://zenodo.org/record/5406610