Labops kerzhneri, Vinokurov, Nikolay N., 2010

Vinokurov, Nikolay N., 2010, Labops kerzhneri sp. n., a new species of Halticini (Hemiptera: Heteroptera: Miridae: Orthotylinae) from Eastern Siberia, Zootaxa 2689, pp. 63-68 : 63-67

Labops kerzhneri sp. n.

(figs. 1, 2, 7, 9, 10, 15, 16)

Male. General coloration black, dorsum with scarce, long, erected, brown setae and easily obliterated silvery scalelike setae. Macropterous, slender, body 2.7 times as long as body width.

Head shiny. Eyes strongly pedicellate, highly raised upwards above middle part of vertex and somewhat advanced forward (see dorsally, fig. 1), with yellow, curved at obtuse angle spots near eyes. Frons depressed, with thin longitudinal strip, shiny, vertical, not bulging (see laterally, fig. 2). Vertex with narrow transverse ridge at base. Mandibular plate black, with narrow stripe near base of clypeus in male, and covered with dense thick brown bristles in female. (in Russian variant this is said with regard to females). Clypeus black, sides of head under eyes with a longitudinal yellow spot. Bucculae with narrow pale edging. Antennae black, segment I with robust, long, black bristles, segments II–IV with short, dark, bristle-like setae and thin setae. Labium black, shiny, reaching middle coxae.

Pronotum with slightly concaved lateral margins, twice shorter than basal width, matt, with scarce transverse wrinkles. Posterior margin of pronotum concave, twice as wide as anterior margin. Scutellum matt, convex at base, strongly pressed and flat behind the middle, with low, strongly smoothed, longitudinal keel. Thoracic venter black and shiny. Trochanters, coxae, and femora entirely black. Tibiae black, with wide yellow-brown ring apically and short semierected setae. Tibial spines black. Tarsi black.

Clavus and corium with very weak dull shine, external margin of corium with narrow light stripe (fig. 7, 8). External margin of corium straight; membrane black, matt, reaching apex of abdomen.

Abdomen black. Parameres as in figs. 9, 10.

Female. Similar to male in structure and coloration. Body 2.0–2.3 times as long as wide. Pale spots on head larger than in male. Semibrachypterous, hemelytra short, membrane strongly reduced, not covering 7th abdominal segment.

Measurements. Body length male 5.5–5.7, female 4.6–5.1; body width male 2–2.2, female 2.2–2.4. Head width male 1.55, female 1.60–1.62. Length of antennal segments male 1.02: 2.1–2.6: 1.05–1.25: 1.0–1.1, females 1.0: 1.9–2.1: 1.1–1.2: 1.1–1.25.

Type series. Holotype: ɗ, middle flow of the Pilka River, right tributary of the Lena River, “Zolotoprodsnab” locality, 10.VII.2008 (E.L. Kaimuk). Paratypes: upper flow of the Pilka River, right tributary of the Lena River, “Upper Cordon” of the «Pil’ka» resource reserve, 6.VII.2008 (N.N. Vinokurov), 1 ɗ, 1 Ψ; middle flow of the Pilka River, right tributary of the Lena River, “Zolotoprodsnab” locality, 10.VII.2008 (E.L. Kaimuk), 1 ɗ, 2 Ψ.

Distribution. Eastern Siberia (South-West Yakutia)— fig. 15.

Comparison. Among all Palaearctic representatives of the genus Labops , the new species is most similar to L. sahlbergi (Fallén, 1829) in the strongly pedicellated eyes highly risen above the vertex ( Figs. 3, 4 ). Other species, including L. burmeisteri Stål, 1858 , can be easily distinguished by the less pedicellated eyes ( Fig. 5, 6 ). Clear distinctions are also found in the structure of the parameres. Characters to allow distinguishing the new species from L. sahlbergi and L. burmeisteri are summarized in the Table 1 . Among North American Labops spp. three species, L. hirtus Knight, 1922 , L. chelifer Slater, 1954 , and L. tumidifrons Knight, 1922 have a pale edging of the external margin of corium. However, all three species differ from L. kerzhneri in the smaller body size and the structure of both parameres (see Slater, 1954a, b).

Biology. L. kerzhneri sp. n. inhabits mesic grass-forbs meadows in the valley of the Pilka River together with L. sahlbergi (fig. 16), but the population density of the former seems to be very low. A search for the new species in the same places during the first half of July, 2000 was unsuccessful, but L. sahlbergi , a usual representative of the tribe Halticini in moist meadows of South-Western Yakutia, was collected in high numbers. The host plant was not found.

Etymology. The new species is named in honor of the outstanding entomologist Izyaslav Moiseevich Kerzhner.

Vestiture of dorsum scarce, long, brown, erected dense, short, semi-erected dense, short, erected setae and setae and very scarce silvery silvery setae and dense silvery scarce, silvery, scalelike setae scalelike setae scalelike setae along claval suture continued next page I am thankful to F.V. Konstantinov for advice and correction of the manuscript. The work was supported by the Russian Foundation for Basic Research (grant 08-04-00212-а).

Figures

FIGURES 1 – 8. Head and hemelytra of Labops species: 1, 2, 7, 8 — L. kerzhneri sp. n., 3, 4 — L. sahlbergi, 5, 6 — L. burmeisteri (1, 3, 5 — dorsal view, 2, 4, 6 — lateral view) (1 – 6 — head, 7, 8 — hemelytra).

Tables

TABLE 1. Diagnostic characters of Siberian Labops spp.

characters	L. kerzhneri sp. n.	L. sahlbergi	L. burmeisteri
Eyes	strongly pedicellate, raised dorsally and advanced anteriorly	strongly pedicellate, raised upwards, almost parallel to anterior part of pronotum in dorsal view	slightly pedicellate, parallel to anterior part of pronotum in dorsal view
Frons	Flat	convex	convex
Mandibular plate	black, with pale stripe ventrally, with dense, thick, gold setae	entirely pale, with white thin setae	entirely pale, with white thin setae