Pinthaeus Stål, 1868

Zhao, Qing, Rédei, Dávid & Bu, Wenjun, 2013, A revision of the genus Pinthaeus (Hemiptera: Heteroptera: Pentatomidae), Zootaxa 3636 (1), pp. 59-84 : 60-61

Genus Pinthaeus Stål, 1868

Pinthaeus Stål, 1868: 497 (as subgenus of Cimex ; upgraded by Stål 1870: 46). Type species by monotypy: Cimex sanguinipes Fabricius, 1781 .

References. Stål 1870: 46 ( catalogue ), Stål 1872: 40 (in key), Hüeber 1891: 76 (fauna of Germany), Lethierry & Severin 1893: 216 ( catalogue ), Muchardt 1906: 132 (nomenclature), Oshanin 1906: 152 ( catalogue, Palaearctic ), Bergroth 1907: 179 (nomenclature), Schouteden 1907: 11 (in key), 39 (redescription, type species, distribution, catalogue ), Kirkaldy 1909: 14 ( catalogue ), Oshanin 1912: 18 ( catalogue, Palaearctic ), Stichel 1925: 33 (in key), 34 (fauna of Germany), Seabra 1926a: 157 (in key), 158 (redescription, fauna of Portugal), Yang 1935: 94 (in key), 106 (redescription, fauna of China), Gulde 1934: 168 (in key), 169 (redescription, fauna of Germany), Stichel 1935: 362 ( catalogue , North and Central Europe), Vidal 1949: 204 (in key, fauna of West Palaearctic), Kiritshenko 1951: 324 (in key), 344 (fauna of European part of USSR), Halászfy 1959: 43 (in key), 79 (diagnosis, fauna of Hungary), Putshkov 1961: 308 (in key), 309 (fauna of the Ukraine), Stichel 1961a: 651 (in key), 652 (fauna of Europe), Stichel 1961b: 767 (checklist, Palaearctic), Wagner 1961: 159 (fauna of Central Europe), Stichel 1962: 248 (checklist, Palaearctic), Kerzhner & Jaczewski 1964: 844 (fauna of European part of USSR), Putshkov 1965: 304 (in key, distribution), Wagner 1966: 76 (in key), 77 (redescription, fauna of Germany), Servadei 1967: 520 ( catalogue , Italia), Hsiao & Cheng 1977: 76 (in key), 80 (fauna of China), Josifov 1981: 181 (in key), 184 (redescription, fauna of Bulgaria), Gidayatov 1982: 117 (fauna of Azerbaijan), Lodos & Önder 1983: 222 (in key), Kis 1984: 185 (redescription, fauna of Romania), Kanyukova 1988: 922 (in key), 929 (fauna of Far East of USSR), Thomas 1994: 148 (in key) 193 (diagnosis, catalogue ), Lis 2000: 63 (in key), 65 (redescription, fauna of Poland), Wang & Liu 2005: 281 (in key), Rider 2006: 244 ( catalogue ), Wachmann et al. 2008: 89 (distribution, diversity, fauna of Germany), Péricart 2010: 205 (fauna of the West Palaearctic).

Diagnosis. Recognized within Asopinae by the following combination of characters: eyes adjacent to anterior margin of pronotum; mandibular plates distinctly surpassing clypeus, converging apically; scutellum not reaching apex of abdomen, not gibbose basally, with frenal portion occupying basal two-third; fore femur armed with a single spine; fore tibia dilated and laminate; abdominal sternite III with a single, short, apically pointed spine.

Redescription. Body of medium size (14–20 mm), oval, weakly convex dorsally, more strongly convex ventrally. Integument and vestiture. Dull; integument smooth, densely punctured dorsally and ventrally, margins of head and pronotum with callose areas of strongly variable extension; dorsum and venter virtually glabrous.

Head distinctly shorter than pronotum; postocular part very short, ‘neck’ virtually absent, eye adjacent to anterior margin of pronotum; eye of medium size, globose; lateral margin of anteocular part sinuous; mandibular plates not dilated, distinctly surpassing clypeus and converging apically; dorsally flat, clypeus depressed apically; buccula high, short, far remote from apex of head anteriorly, abruptly, angularly terminating around level of anterior margin of eye posteriorly; antenniferous tubercle with an anteriorly directed small triangular tooth well visible in dorsal view; ocelli small, situated distinctly posteriad to the level of posterior margin of eyes, close to eyes. Antenna thin, 5-segmented because of secondary subdivision of segment II; all segments cylindrical or subcylindrical; segment I very short, globose, reaching about middle of postocular portion of head; segments IIa and IIb subequal in length, segments III and IV subequal in length and slightly longer than segments IIa and IIb. Labium projecting between hind coxae, segment I shortest, reaching base of head, segment II slightly longer than III or IV, segments III and IV subequal in length.

Pronotum. Anterior margin deeply concave provided with a narrow marginal callose thickening neighboured by a broad impression posteriorly; lateral margin deeply angulately concave, margin of anterior lobe distinctly, obtusely, roughly crenulate, margin of posterior lobe smooth; anterolateral angle usually produced into a short, anterolaterally directed, but variable denticle; humeral angles produced into short ( Fig. 10 ) to long ( Fig. 14 ) process, exceptionally not produced ( Fig. 9 ). Scutellum surpassing half of abdomen but distinctly remote from apex of corium and far remote from apex of abdomen; frenal portion occupying basal two-third, strongly tapering posteriorly, postfrenal portion occupying apical third, with weakly converging, almost subparallel margins, apex relatively narrowly rounded. Thoracic pleura and sterna. Mesosternum with an obtuse, rather low, but distinct carina, metasternum with a small, elongate, rhomboid elevation along midline; metathoracic scent gland ostiole provided with a weakly elevated, elongate, anteriorly curved peritremal disc (sensu Kment & Vilímová 2010), evaporatorium restricted to metapleuron and formed by a narrow stripe of mycoid microsculpture along nearly whole anterior margin of metapleuron and another short and narrow stripe immediately posteriad to peritreme. Fore wing. Apical margin of corium weakly convex, membrane far surpassing apex of abdomen. Legs. Ventral surface of fore femur armed with a single strong spine subapically, mid and hind femora unarmed; dorsal margin of fore tibia dilated and laminate, mid and hind tibiae with a distinct furrow dorsally.

Pregenital abdomen. Base of sternite III with a short, narrow, apically pointed spine directed anteriorly, reaching hind coxae; posterolateral angles of connexival segments III–VII slightly produced, angulate.

Larvae. Larvae of the single included species Pinthaeus sanguinipes can be distinguished from members of other West Palaearctic genera of Asopinae by the following combination of characters: lateral margins of mandibular plates concave, clypeus apically narrowed (4th–5th instars); ventral surface of fore femur provided with a distinct subapical tooth (4th–5th instars) or at least a protuberance which is invariably larger than those of mid and hind femora (3rd instar); tibiae dark with a contrasting pale annulus (4th–5th instars); black transverse fascia on abdominal tergite II nearly as broad as evaporatorium surrounding openings of dorsal abdominal scent glands of segment III, lateral sclerotized plates distinctly broad than their lengths (2nd–5th instars); abdomen pale (1st–5th instars), yellow to red, or bluish gray laterally (Putshkov 1961, Péricart 2010).

Distribution and diversity. A single species is recognized in this paper, occurring in the West Palaearctic, East Asia, and marginal areas of the Palaearctic Region.

Figures

FIGURES 7 – 14. Intraspecific variability of characters of head and pronotum (7 – 8) and humeral angle (9 – 14) of Pinthaeus sanguinipes. 7, North Korea: Kumgan-san (♂); 8, China: Hebei, Qinglong Forest Farm (Ƥ); 9, China: Heilongjiang, Ning’an (Ƥ); 10, Hungary: Simontornya (Ƥ); 11, China: Hebei, Qinglong Forest Farm (Ƥ); 12, Sichuan: Baoxing (Ƥ); 13, Sichuan: Mt. Emei (Ƥ); 14, Yunnan: Maguan (Ƥ). Figs. 7 – 8: most exposed (anterodorsal) view; Figs. 9 – 14: dorsal view. Scale in mm; Figs. 9 – 14 not to scale.