Xenorhyncocoris princeps Miller, 1949

Chen, Zhuo, Liu, Yingqi & Cai, Wanzhi, 2021, Taxonomic review of Xenorhyncocoris Miller (Heteroptera: Reduviidae: Ectrichodiinae), with description of X. attractivus sp. nov. and notes on sexual dimorphism of the genus, European Journal of Taxonomy 746 (1), pp. 26-49 : 40-43

Xenorhyncocoris princeps Miller, 1949

Figs 46–56

Xenorhyncocoris princeps Miller, 1949: 235 . Holotype (♀): Malaysia, Selangor, NHMUK.

Xenorhyncocoris princeps – Cook 1977: 70. — Maldonado Capriles 1990: 78. — Putshkov & Bérenger 1999: 92.

Diagnosis

Only micropterous female known. Body length about 32 mm; brown; head 1.8 times as long as pronotum; anteocular part 1.4 times as long as postocular part; labial segment II 1.9 times as long as segment III, reaching posterior margin of eye, nearly straight, apical ⅔ of ventral surface slightly thickened; pronotum as broad as its length, anterior lobe strongly swollen, posterior lobe as broad as width of anterior lobe; prosternum reaching anterior margins of mid coxal cavities; scutellum suberect; fore wing reaching apical ¾ of scutellum.

Material examined

Holotype

MALAYSIA • ♀; Selangor, Ulu Tinggi ; 3.49240° N, 101.51658° E; Feb. 1941; Goolden leg.; NHMUK 013587631 .

Redescription

Micropterous female

MEASUREMENTS [in mm, n = 1 (holotype)] ( Figs 46–48 ). Length of body (to apex of abdomen) = 31.80; length of head = 9.50; length of anteocular part = 4.10; length of postocular part = 2.90; greatest width of head = 4.60; width across eyes = 3.80; interocular space = 1.70; length of antennal segments I–IV = 4.10, 4.80, 1.50, 2.20; length of labial segments II–IV = 6.15, 3.20, 2.40; length of pronotum = 5.30; length of anterior pronotal lobe = 3.50; length of posterior pronotal lobe = 1.80; width of anterior pronotal lobe = 5.50; width of posterior pronotal lobe = 5.60; median length of scutellum = 1.50; basal width of scutellum = 3.00; apical prongs space = 1.35; length of fore femur, tibia, tarsus = 7.50, 7.00, 1.70; length

of mid femur, tibia, tarsus = 7.20, 6.60,? (missing); length of hind femur, tibia, tarsus = 9.80, 9.70,? (missing); length of fore wing = 1.50; length of abdomen = 15.40; maximum width of abdomen = 11.40.

COLORATION. Body generally brown; basi- and disti- (except apical ⅓) flagellomeres and posteromedian margin of valvifer I yellowish brown. Other body parts as in generic description.

STRUCTURE. Body shape and vestiture as in generic description. Head ( Figs 50–53 ) 1.8 times as long as pronotum, 2.1 times as long as its maximum width; anteocular part 1.4 times as long as postocular part; antennal scape as long as anteocular part; labial segment II 1.9 times as long as segment III, reaching posterior margin of eye, nearly straight, ventral surface far remote from ventral surface of head, apical ⅔ of ventral surface slightly thickened ( Fig. 51 ); labial segment III moderately inflated ( Figs 51–52 ). Pronotum ( Figs 50–51 ) as broad across humeral angles as its length; anterior lobe 1.95 times as long as posterior lobe; posterior lobe as broad as width of anterior lobe; prosternum ( Fig. 52 ) reaching anterior margins of mid coxal cavities; scutellum ( Fig. 54 ) broad, suberect, with apical prongs short. Fore wing ( Fig. 54 ) scale-like, reaching apical ¾ of scutellum. Abdomen ovoid, 1.35 times as long as its maximum width.

FEMALE GENITALIA ( Figs 55–56 ). As in generic description.

Male

Unknown.

Distribution

Malaysia (Selangor: Ulu Tinggi).

Figures

Figs 46–49. Xenorhyncocoris princeps Miller, 1949, holotype, ♀ (NHMUK 013587631), habitus. 46. Dorsal view. 47. Same, lateral view. 48. Same, ventral view. 49. Labels. Scale bar: 46–48 = 5.00 mm.

Figs 50–56. Xenorhyncocoris princeps Miller, 1949, holotype, ♀ (NHMUK 013587631). 50. Anterior part of body, dorsal view. 51. Same, lateral view. 52. Same, ventral view. 53. Head, dorsal view. 54. Scutellum, dorsal view. 55. Posterior part of abdomen, ventral view. 56. Same, caudal view. Scale bars: 50–52, 55–56 = 3.00 mm; 53–54 = 2.00 mm.