Compsidolon schrenkianum, Konstantinov, Fedor V. & Vinokurov, Nikolay N., 2011

Konstantinov, Fedor V. & Vinokurov, Nikolay N., 2011, New species and new records of Plant Bugs (Hemiptera: Heteroptera: Miridae) from Northwestern China, Zootaxa 2836, pp. 27-43 : 33-36

Compsidolon schrenkianum sp. nov.

Figures 1, 2 , 8, 10, 12–16

Differential diagnosis. Recognized by the relatively large and gracile body in male, indistinct and diffuse color pattern of dorsum, and structure of male genitalia. Most similar in size (see Table 1 ), general appearance ( Fig. 1 ) and coloration to Compsidolon alatavicum ( Kerzhner 1962) ( Fig. 3 ), and apparently not separable from it with certainty except by dissection of vesica. Both species share the same host plant and represent the only two species of Compsidolon known to be associated with Pinaceae . The new species can be separated from C. alatavicum by having distinctly longer apical blade, curved far distal from the opening of secondary gonopore (compare Figs. 8, 10 and 9, 11 ).

Description. Male: COLORATION ( Fig. 1 ): Dirty pale brown. Head: Dirty pale brown to dirty yellow, mandibular plate, apex of clypeus, basal margin of vertex and areas along eyes usually somewhat darker; antenna brown, first segment and base of second segment usually darker than reminder; labium pale brown, with darkened apex. Thorax: Pronotum ranging from pale to dark brown, sometimes with greenish tinge along anterior margin and several minute, diffuse, rounded, dark brown spots on disc, usually with somewhat darkened calli and posterior margin; exposed part of mesonotum and scutellum pale brown to brown, sometimes with a few diffuse minute spots similar to those on pronotum, mesonotum not infrequently with orange tinge at sides, lateral angles of scutellum usually paler, whitish to pale brown; thoracic pleura pale brown to dirty yellow, sometimes partly with greenish tinge. Hemelytra: Pale brown to dirty brownish yellow, usually with indistinct, diffuse, minute brown rounded spots; inner margin of clavus always narrowly dark brown; cuneus usually with narrow transverse pale area at base, membrane smoky pale brown, semitransparent, typically with somewhat darker, variously shaped spot passing from apex of cells through outer margin of membrane distal to apex of cuneus, areas proximal and distal to transverse darkened area almost entirely transparent; base of membrane with oblique wedge-shaped dark brown macula; veins yellow or whitish. Legs: Femora pale brown, apically with a series of dark brown minute spots on dorsal and ventral surfaces; tibiae pale brown to dirty yellow, with minute and sometimes indistinct dark brown spots at bases of dark tibial spines. Abdomen: Usually dirty yellow to pale brown, pregenital segments sometimes with greenish tinge.

SURFACE AND VESTITURE: Dorsum shiny, smooth, with dense, somewhat curved, silver simple setae and dark, more or less straight simple setae; both types of setae, especially dark ones, erect to semierect and contrastingly long, slightly shorter than width of eye on vertex, pronotum and basal margins of hemelytra, adpressed to semiadpressed, 1/2–1/3 shorter elsewhere; venter, antenna, and legs with silver adpressed simple setae; first antennal segment with two dark spinelike setae on medial surface.

STRUCTURE: Distinctly elongate, almost parallel-sided, total length 3.5–3.9, body 3.9–4.2 × as long as width of pronotum. Head: Weakly projecting anteriorly, almost not protruding ventrally below inner margin of eyes; eyes large, vertex 1.1–1.2 × as wide as eye; antennal fossa located close to inner margin of eye, second antennal segment 1.2–1.3 × as long as basal width of pronotum, 1.7–1.8 × as long as width of head; labium slightly surpassing hind coxa. Thorax: Pronotum 1.3–1.4 × as wide as long; calli not demarcated; metathoracic scent-gland evaporatory area with greatly extended, gradually tapering dorsoanterior angle. Legs: Long and slender, hind femur somewhat thickened, tarsus as in Fig. 16 , claw long and slender, pulvillus small, not surpassing midpoint of claw, attached to claw along entire length.

MALE GENITALIA: Genital capsule: About 40 % of abdomen, apically with distinct ventral keel running along midline. Parameres: Shape typical for Phylini , right paramere lanceolate, with comparatively long and thin apical process ( Fig. 14 ); left paramere as in Figs. 12–13 , with triangular, gradually tapering sensory lobe and straight apical process. Apex of theca: As in Fig. 15 . Vesica: S-shaped, long and thin, with rather long, gradually tapering, curved at midpoint apical blade ( Figs. 8, 10 ); secondary gonopore subapical, with well-developed sculpture.

Female. COLORATION, SURFACE AND VESTITURE: As in male ( Fig. 2 ).

STRUCTURE: Similar to male, but more ovoid, total length 3.0–3.3, body 3.0–3.3 × as long as width of pronotum. Head: With somewhat smaller eyes and wider vertex than in male, vertex 1.8–2.0 × as wide as eye; second antennal segment 0.9–1.0 × as long as basal width of pronotum, 1.3–1.4 × as long as width of head. Thorax: Pronotum 2.1–2.2 × as wide as long.

Etymology. The species is named for its host affiliation.

Host. All specimens were collected from Picea schrenkiana Fisch. & C.A. Mey (Pinaceae) . This species of spruce is native to the Tian Shan mountains of Central Asia, where it grows at altitudes of 1 300–3 600 meters in Western China (Xinjiang), Kazakhstan, Kyrgyzstan, and Northern Pakistan ( Farjon 1998).

Distribution. Xinjiang Province, China. The new species was sampled from several localities on the southeastern slopes of Jungar Alatau Mountains. This range of mountains stretches between the Altai and the principal massifs of the Tien Shan and corresponds to the border between Kazakhstan and China. The northwestern slopes of Jungar Alatau are inhabited by the closely related species, C. alatavicum (see Fig. 25 ).

Material examined: Holotype: CHINA: Xinjiang Uygur Zizhiqu: Borohoro Mt. Range, Yili Guozigou Dujiacun, 44.45416 ° N 81.17638 ° E, 1912 m, 27 Jul 2010, N.N. Vinokurov, Picea schrenkiana (Pinaceae) , 1ď ( AMNH _PBI 00337705) ( ZISP).

Paratypes: CHINA: Xinjiang Uygur Zizhiqu: Borohoro Mt. Range, Yili Guozigou Dujiacun, 44.45416 ° N 81.17638 ° E, 1912 m, 27 Jul 2010, N.N. Vinokurov, Picea schrenkiana (Pinaceae) , 1ď ( AMNH _PBI 00338065), 2Ψ ( AMNH _PBI 0 0 338092, AMNH _PBI 00338093) (YIB), Picea schrenkiana (Pinaceae) , 9ď ( AMNH _PBI 0 0 338075 - AMNH _PBI 00338083), 7Ψ ( AMNH _PBI 0 0 338094 - AMNH _PBI 00338100) Picea schrenkiana (Pinaceae) , 9ď ( AMNH _PBI 0 0 337697 - AMNH _PBI 0 0 337704, AMNH _PBI 00337763), 6Ψ ( AMNH _PBI 0 0 337691 - AMNH _PBI 00337696) ( ZISP). Jungar Alatau, Wenquan Aritaxi, 45.19616 ° N 81.54997 ° E, 1620 m, 24 Jul 2010, N.N. Vinokurov, Picea schrenkiana (Pinaceae) , 1Ψ ( AMNH _PBI 00338091) ( ZISP). Tian-Shan, Ketmen Range, Tekesi Daban, 43.34166 ° N 81.83083 ° E, 1834 m, 25 Jul 2010, N.N. Vinokurov, Picea schrenkiana (Pinaceae) , 1ď ( AMNH _PBI 00338068) ( CAU), Picea schrenkiana (Pinaceae) , 5ď ( AMNH _PBI 0 0 338084 - AMNH _PBI 00338088), 5Ψ ( AMNH _PBI 0 0 338049 - AMNH _PBI 00338053) ( ZISP). Tian Shan, Tekesi Kesang, 42.96975 ° N 81.78116 ° E, 1685 m, 26 Jul 2010, N.N. Vinokurov, Picea schrenkiana (Pinaceae) , 1ď ( AMNH _PBI 00338067), 2Ψ ( AMNH _PBI 0 0 338089, AMNH _PBI 00338090) ( CAU), Picea schrenkiana (Pinaceae) , 1ď ( AMNH _PBI 00338066) (YIB), Picea schrenkiana (Pinaceae) , 9ď ( AMNH _PBI 0 0 338054 - AMNH _PBI 00338062), 2Ψ ( AMNH _PBI 0 0 338063, AMNH _PBI 00338064) ( ZISP).

Figures

FIGURE 25. Distribution of Compsidolon spp.

FIGURES 1 – 7. Dorsal habitus photographs. 1, 2 — Compsidolon schrenkianum sp. nov.: 1 — male, 2 — female. 3 — Compsidolon alatavicum (Kerzhner, 1962), male. 4 — Glaucopterum alborubrum sp. nov., male. 5 – 6 — Glaucopterum albonigrum Kerzhner, 1984: 5 — typical dark male, 6 — pale female. 7 — Glaucopterum maculipenne Kerzhner, 1984.

FIGURES 8 – 16. Compsidolon spp., male genitalia and tarsus. 8 – 11 — Vesica, lateral and ventral views: 8, 10 — C. schrenkianum sp. nov; 9, 11 — C. alatavicum (Kerzhner, 1962). 12 – 16 — C. schrenkianum sp. nov.: 12 – 13 — left paramere; 14 — right paramere; 15 — apex of theca; 16 – tarsus.