Loristes decoratus ( Reuter, 1908 )

Yasunaga, Tomohide & Jica-Sv, 2008, A review of the Far East Asian mirine plant bug genus Loristes (Hemiptera: Heteroptera: Miridae: Mirinae), with description of a new species from Japan, Acta Entomologica Musei Nationalis Pragae 48 (2), pp. 395-402 : 398-399

Loristes decoratus ( Reuter, 1908)

( Figs. 1-3 , 9-12 , 17-19 , 25)

Adelphocoris decoratus Reuter, 1908: 488 (sp. nov.).

Loristes decoratus: JOSIFOV & KERZHNER (1972) : 164 (comb. nov., list); YASUNAGA (1993): 289 (description of final instar larva); SCHUH (1995): 790 (catalog); KERZHNER & JOSIFOV (1999): 109 (catalog); ZHENG et al. (2004): 304 (diagnosis).

Type locality. Russia, southern Primorskiy Kray, Ussuri.

Material examined. RUSSIA: PRIMORSKIY KRAY: Khasanskiy Dist., Ryazanovka, 12 km SW of Slavyanka,

29.v.1992, 1J, T. Yasunaga lgt .; Anisimovka, 300 m alt., 5.vi.1992, 7JJ 5♀♀, T. Yasunaga lgt. SOUTH KOREA :

KYONGI PROV.: Mt. Gwangmoek, 17.v.1998, 1 J 1 ♀, C. Cheong lgt. KANGWON PROV.: Hungcheon, Maemyong,

Undulyong, 11.vi.1997, 1 ♀, S. An lgt.; Inche, Hagang, Naelimcheon, 27.v.1993, 1 J, D. Gu lgt. JEOLLABUK PROV. :

Samgeo, Mupung, Muju, GB, 18.v.2007, 1 J 1 ♀, J. Seong lgt.; Samgong, Seolcheon, Muju, GB, 19.v.2007, 1 ♀,

J. Seong lgt.

Redescription. Body widely fuscous, elongate. Head chocolate brown, shining, with pale, short, erect setae. Antennal segment I brown or pale brown, usually tinged with red, long, greater than head width across eyes; segment II entirely fuscous, longer than basal width of pronotum; segments III whitish brown, with reddish apical 1/3 and darkened extreme apex; segment IV dark brown, with pale extreme base. Labium shiny pale brown; ventral part of segment I sometimes infuscate; apex of segment IV dark brown. Pronotum shiny fuscous, with usually continuous, pale basal margin; collar always yellow; scutellum fuscous, with yellow apex; pleura widely darkened, more or less pruinosed or shagreened, with creamy yellow scent efferent system. Hemelytron chocolate brown, slightly shagreened; corium with two pale spots that are continuing to pale embolium; cuneus pale, with narrowly darkened apex and apical margin; membrane smoky brown, semitransparent. Leg, including coxa, yellowish brown; apical part of metafemur widely reddish brown; tibia with pale spines; tarsus pale brown, with more or less infuscate tarsomere III. Abdomen shiny dark brown, with widely yellow ventromedian part.

Male genitalia ( Figs. 9-12 ). Left paramere C-shaped. Vesica with three horn-like, slender spiculi (spc I-III).

Female genitalia ( Figs. 17-19 ). Interramal lobe weak. Sclerotized ring oval.

Measurements (J/ ♀). Body length 8.0-8.3 / 8.4-8.9; head width across eyes 1.00-1.11 / 1.15-1.18; vertex width 0.49-0.52 / 0.52-0.56; lengths of antennal segments I – 1.15-1.20 / 1.17-1.23, II – 2.35-2.40 / 2.52-2.60, III – 1.46-1.49 / 1.48-1.66, IV – 0.93-1.01 / 0.88-0.92; total labial length 2.16-2.28 / 2.20-2.24; mesal pronotal length including collar 1.30-1.35 / 1.39-1.42; basal pronotal width 2.13-2.32 / 2.37-2.41; width across hemelytra 2.42-2.64 / 2.80-2.88; lengths of metafemur 2.30-2.86 / 2.97-3.12, tibia 4.08-4.13 / 4.27-4.32, and tarsus 0.67-0.70 / 0.67-0.72.

Differential diagnosis. Distinguished from L. paveli sp. nov. by the larger size, longer antennal segment I that is greater than the head width across eyes, longer antennal segment II that is greater than basal width of the pronotum, shorter mesal pronotal length that is less than the antennal segment III, larger pale spots on the hemelytra, and structures of the genitalia.

Bionomics. More than 20 final instar immatures were collected from Lonicera maarckii (Caprifoliaceae) during my expedition in southern Primorskiy Kray including the type locality, Ussuri area. KERZHNER (1988) also reported the plant association as Lonicera spp. A univoltine life cycle is assumed for this mirid, and the newly emerged adults appear in early June. The final instar larva was documented and described by YASUNAGA (1993).

Distribution. This species is now confirmed to be restricted to the continental Far East Asia: Northeastern China (Heilongjiang, Jilin and Liaoning provinces), Russian Far East (Primorskiy Kray and S. Khabarovskiy Kray provinces), and Korea ( Fig. 25). The record from ‘Amur’ ( SCHUH 1995) is presumably based on an incorrect citation.

Figures

Figs. 1-8. Loristes species, habitus. 1-3 – L. decoratus (Reuter, 1908). 1 – male from Primorskiy Kray, Russia; 2 – female from Korea; 3 – male from Korea. 4-8 – L. paveli sp. nov. 4, 6 – male from Honshu, Japan; 5 – female from Honshu, Japan; 7-8 – male from Shikoku, Japan.

Figs. 9-16. Male genitalia of Loristes species. 9-12 – L. decoratus (Reuter, 1908). 13-16 – L. paveli sp. nov. 9, 13 – genital segment. 10, 14 – right paramere. 11, 15 – left paramere. 12, 16 – vesica.Abbreviations: ls – lobal sclerite, or lobe-sclerite; pt – phallotheca; sgp – secondary gonopore; spc – spiculum.

Figs. 17-24. Female genitalia of Loristes species. 17-19 – L. decoratus (Reuter, 1908). 20-24 – L. paveli sp. nov. 17, 20 – interramal lobe. 18, 21 – sclerotized ring. 19, 24 – sclerotized rings and adjacent structures. 22-23 – posterior wall of bursae. Abbreviations: dlp – dorsal labiate plate; ds – dorsal structure; irl – interramal lobe; sdp – seminal depository; sr – sclerotized ring; vlp – ventral labiate plate.