Arcuatitibia kerzhneri, a new genus and species of Reduviinae (Hemiptera: Reduviinae) from China Author Luo, Zhaohui Author Lu, Zhaozhi Author Cai, Wanzhi text Zootaxa 2009 2121 64 68 journal article 10.5281/zenodo.188113 c428ebbe-0e48-479f-b153-3f1b73b350d9 1175-5326 188113 Arcuatitibia kerzhneri Luo, Lu & Cai , sp. n. ( Figs. 1–12 ) Description. Color. Black. Neck blackish brown, shining; apex of basal antennal, spot nearby ocellus, spots on the wing and connexivum lemon; subapical portion of second antennal segment paler than remaining portion; eyes grayish black; ocellus, third and fourth antennal segments yellowish dark brown. Structure. Body elongate elliptical ( Fig. 1 ). Antennal segments clothed with sparsely longer erect setae and densely shorter erect pubescence, legs clothed with longer suberect setae. Head small, anteocular portion slightly declined ( Fig. 2 ); neck smooth and shining; ocellus located on a tubercle; interocellar space subequal to distance between ocellus and ipsilateral eye. Basal 1/3 of first antennal segment thinner ( Fig. 1 ); second segment subequal to third antennal segment; third and fourth segments distinctly thinner than second segment ( Fig. 1 ). First rostral thickest, extending beyond anterior edge of eye, second rostral segment longest, slightly shorter than combined length of the remaining segments, third rostral segment shortest ( Fig. 2 ). Collar process distinctly tuberculated ( Figs. 1 , 2 ). Anterior pronotal lobe slightly budging with distinct sculptures, middle of anterior pronotal lobe deeply incised, posterior angle not distinct ( Fig. 1 ). Scutellum nearly isosceles-triangleshaped, with distinct Y-shaped carina, apex of scutellum slightly upward ( Fig. 1 ). Meso- and metasterna, second to third abdominal sterna longitudinally ridged. Hind femur more slender and longer, but shorter than hind tibia; fore and mid tibiae obviously bent ( Fig. 1 ), spongy furrow small, 1/10 as long as tibia; third tarsomere longest; space between fore and mid coxae about twice as long as that between mid coxae; hemelytron of male slightly extending beyond apex of abdomen. Apical part of paramere bent, inner side of apex with a small process, paramere slightly twisted in middle ( Figs. 7, 8 ); pygophore without median process; resting structure of phallus as shown in Figs 9-12 . Phallosoma ovate in dorsal and ventral views ( Figs. 11, 12 ); basal plate somewhat thick, basal plate bridge much shorter than basal plate ( Fig. 10 ); pedicel long and strong ( Fig. 9 ); struts separate except distal part connected ( Fig. 11 ). Measurements [3 (n=1)/Ƥ (n=2), holotype in parentheses]. Length body 26.16/ 27.20–28.16 (28.16). Width abdomen 7.54/ 10.0–10.46 (10.46). Length head 4.46/4.57–4.62 (4.62); length anteocular part 1.69/ 1.84–1.85 (1.85), length postocular part 0.77/0.78–0.78 (0.78); interocular space 0.77/ 0.77–0.77 (0.77); length antennal segments I–IV = 1.54/1.74–1.85 (1.85):? (missing)/5.58-5.85 (5.85):? (missing)/ 5.38 (5.38):? (missing)/ 3.08 (3.08).. Length rostral segments I–III = 2.0/2.14–2.31 (2.31): 2.46/2.71–2.77 (2.77): 0.77/ 0.86–0.92 (0.92). Length anterior pronotal lobe 2.62/2.71–2.77 (2.77), posterior lobe 3.23/ 3.49–3.54 (3.54). Length scutellum 3.58/3.80– 3.83 (3.83). Length hemelytron 17.54/18.57–19.54 (19.54). FIGURE 1. Arcuatitibia kerzhneri Luo, Lu & Cai , sp. nov. , Ψ. 1, Habitus. Scale bar = 4 mm. FIGURES 2–12. Arcuatitibia kerzhneri Luo, Lu & Cai , sp. nov. , 2, Ψ; 3–12, ♂. 2, Head and pronotum, antennae removed; 3, apical part of abdomen; 4, 5, pygophore; 6–8, right paramere; 9 phallus; 10, phallobase; 11, 12, phallosoma. 4, 12, ventral view; 2, 3, 5, 9, lateral view; 11, dorsal view. Scale bar of 2, 3 = 0.5 mm; of 4, 5 = 1 mm; Scale bar of 6-12 = 1.6 mm. Material examined: Holotype , Ƥ; China , Xinjiang, Fukang; 1.VII.2007 ; Y . L. Su leg ( CAU ); paratypes , 13; China , Xinjiang, Fukang; 1.VII.2007 ; Zhaohui Luo leg ( CAU ); 1Ƥ; China , Xinjiang, Fukang; 11.VII.2007 ; Zhaohui Luo leg ( XIEG ). Distribution: China (Xinjiang). Etymology: The new species is named in honor of late Dr. I. M. Kerzhner of the Russian Academy of Sciences for his kind help in many ways in our study of Reduviidae and his excellent contribution to the taxonomy of Heteroptera.