Acanthaspis collaris Hsiao, 1976

Cao, Liangming, Rédei, Dávid, Li, Hu & Cai, Wanzhi, 2014, Revision of the genus Acanthaspis Amyot & Serville (Hemiptera: Heteroptera: Reduviidae: Reduviinae) from China, with new records of species to adjacent countries, Zootaxa 3892 (1), pp. 1-66 : 17-20

Acanthaspis collaris Hsiao, 1976

( Figs 41–53, 209 )

Acanthaspis collaris Hsiao 1976: 80 ; Hsiao & Ren 1981: 455; Ren 1987: 218; Maldonado-Capriles 1990: 384; Putshkov & Putshkov 1996: 186.

Redescription. Colouration. Dark brown to black. First antennal segment subapically, rostrum, portion of mandibular plate between antennifers, antennifers, a spot between eyes, spots laterad to ocellar area, collar processes, ridges of anterior pronotal lobe, humeral angles and spots of posterior pronotal lobe, base and a concave subapical spot on corium, posterior half of each segments of connexivum, two annuli of each femur, most part of tibiae pale yellow to yellow; rostrum, antennae (except first antennal segment), tarsi brown; ventral abdomen reddish brown ( Figs 41, 209 ); sometimes, ridges on anterior pronotal lobe, most of collar process, markings on external side of ocelli, markings on postclypeus, apical portion of annulation on subapical part of each tibia bright red.

Structure. Medium sized, pilose; body clothed with dense short golden shining setae, intermixed with yellow or yellowish brown long setae. Head oblong, anteocular portion as long as postocular; longitudinal depression between eyes shallow and thin; mandibular plate between antennifers simple; maxillary plate at the same level as gena; interocellar space longer than diameter of ocellus; first visible rostral segment distinctly longer than second segment; first antennal segment shorter than head ( Figs 41, 42 ). Collar processes small; anterior pronotal lobe shorter than posterior, with shallow sculptures; humeral angles small; mid pronotal posterior margin nearly straight. Scutellum impressed but not wrinkled in the middle, lateral margin with ridge, apical spine sharp. Hemelytron of male surpassing abdominal apex, hemelytron of female not reaching abdominal apex. Pro- and mesotibiae distinctly flattened ( Fig. 41). Paramere irregular, basal third curved, submedian portion with an apophysis, apical third swollen, apex spinous ( Figs 46–48 ); median process of pygophore slender, curved ( Figs 44–45 ); basal plate of phallus thick, apex swollen; basal plate bridge normal, curved ( Fig. 49 ); pedicel long and thick; dorsal phallothecal sclerite covers one fourth of apical phallosoma; struts fused, reaching subapical portion of phallosoma; endosoma in resting condition with big process medially in lateral view, other parts translucent ( Figs 50–52 ). Female with eighth abdominal tergite broad ligulate, central portion longest, posterior semicircular convex; ninth and tenth terga fused, sub-lateral margin swollen, central portion depressed, posterior margin concave with long setae, surrounding first valvifer; first valvifer covered with setae, apex blunt; in resting position most of first valvula invisible, apex blunt; apex of styloid sharp, not surpassing first valvula.

Measurements [in mm, ♂ (n=6) / ♀ (n=6)]. Body length 20.6–22.9/22.1–23.7; maximum width of abdomen 6.4–7.5/6.9–7.6; Head length 3.1–3.4/3.2–3.5; length of anteocular part 1.0–1.4/1.1–143; length of postocular part 1.1–1.3/1.15–1.24; length of synthlipsis 0.86–1.0/0.87–1.02; interocellar space 0.18–0.21/0.18–0.22; length of antennal segments I–IV= 2.8–3.2/2.76–3.1, 4.3–4.7/3.9–4.6, 6.1–6.9/5.5–5.7, 3.6–3.85/3.7–3.8; length of visible rostral segments I–III= 1.75–1.9/1.87–2.0, 1.35–1.42/1.43–1.52, 0.44–0.51/0.48–0.6; length of anterior lobe of pronotum 2.0–2.2/1.9–2.1; length of posterior lobe of pronotum 2.4–3.0/2.5–3.1; maximum width of thorax 6.4–6.7/6.4; length of scutellum 2.7–2.91/2.69–2.72; length of hemelytron 14.3–15.2/14.1–15.6.

Type material. Holotype, ♀, “ China, Yunnan, Cheli , 22.IV. 1957, 600 m, Hong Guangji [Russian translation into Chinese, rectangular white]”; “same data as above in Russian [rectangular white]”; “ Acanthaspis collaris Hsiao , holotype, det. Hsiao T. Y., 1965 [rectangular red]”; “IOZ200787 [blue]” ( IOZ) . Paratypes, 1♂, “ China, Yunnan, Xishuangbanna, Xiaomengyang , 17.VI. 1957, 850 m, Zang Lingchao”; “IOZ200788” ( IOZ) [this type originally as allotype]. 1♀, “ China, Yunnan, Xishuangbanna, Ganlanba , 18.IV. 1957, 540 m, Hong Guangji”; “IOZ200789” ( IOZ) . 1♂, “ China, Yunnan, Xishuangbanna, Mengla , 8.VII.1959, 620– 650 m, Zhang Yiran”; “IOZ200790” ( IOZ) . 1♂, “ China, Yunnan, Xishuangbanna, Damenglong , 22.V. 1962, 650 m, Song Shimei”; “IOZ200791” ( IOZ) . 1♂, “ China, Yunnan, Xishuangbanna, Mengla , 27.V.1959, 620– 650 m, Li Xiaofu”; “IOZ200792” . 1♀, “ China, Yunnan, Xishuangbanna, Damenglong , 12.IV. 1958, 650 m, Hong Chunpei’; “IOZ200793” ( IOZ) .

Other specimens examined. 1♂, “ China, Yunnan Province, Xishuangbanna, Jinghong, 6.VI.1959, Zhang Xuezhong ” ( CAU). 1♀, “ China, Yunnan Province, Jinghong , 20.IV.1984 ” ( CAU) . 1♂, “ Haut Mékong, Houei Sai ; 18–30.V.1918; R. V. de Salvaza ( BMNH)”; “ Acanthaspis collaris Hsiao , det. W. Cai, 2014” ( BMNH) . 1♀, “ Haut Mékong, Vieng Vai ; 23.V.1918; R. V. de Salvaza ( BMNH)”; “ Acanthaspis collaris Hsiao , det. W. Cai, 2014” ( BMNH). 1♀, Saim border, Tenasserim, mountains; Lat. N 12 40 to 14 10; May to July, 1913”; “ K. G. Gairdner, 1913-474”; “ Acanthaspis collaris Hsiao , det. W. Cai, 2014”( BMNH) . 1♂, “W. Thailand: 300 m; Thung Yai Wildlife Sanctuary, 15˚30’N–98˚48’E, Tak Provnce”; “ Umphang District , Mae Chan/Mae Klong confluence; 27.iv.–6.v.1988 ”; “Oak/bamboo forest; M. J. D. Brendell. B. M. 1988–183”; “at light”; “ Acanthaspis siva Distant, Det. C. Amberse ”; “ Acanthaspis collaris Hsiao , det. W. Cai, 2014” ( BMNH) .

Distribution in China. Yunnan (Jinghong, Xiaomengyang, Mengla, Ganlanba) ( Fig. 53 ).

Distribution outside China. Laos, Thailand.

Remarks. The colour pattern of this species is similar to the Philippine species A. quadriannulata Stål and the Indonesian species A. flavovaria (Hahn) . It can be separated from A. quadriannulata by body more robust, postocular portion of the head shorter, and thick, pro- and mesofemora much thicker than metafemora, and eighth abdominal sternum developed (vs. body slender, postocular portion longer and thin, pro- and mesofemora slightly thicker than metafemora, and eighth abdominal sternum undeveloped in A. quadriannulata ). Apart from the colour pattern, A. collaris is also similar to A. flavovaria in body plan, however, it can be distinguished from the latter in each femur with two annulations and tibiae are bicolourous (vs. each femur with one annulation on subapical portion and tibiae are unicolourous in A. flavovaria ).

Figures

FIGURE 53. Distribution of Acanthaspis collaris Hsiao in China.

FIGURES 208–211. 208, Acanthaspis cincticrus Stål, ♂. Habitus. Scale bar = 3.58 mm; 209, Acanthaspis collaris Hsiao, ♂. Habitus. Scale bar = 4.50 mm; 210, Acanthaspis concinnula Stål, ♂. Habitus. Scale bar = 1.92 mm; 211, Acanthaspis fulviconnexa sp. nov., ♀. Habitus. Scale bar = 2.60 mm.

FIGURES 42–52. Acanthaspis collaris Hsiao, ♂. 42, Head and pronotum, antennae removed; 43, 44, pygophore; 45, median pygophore process; 46–48, paramere; 49, basal plate and basal plate bridge; 50–52, phallus. 42, 44, 52, lateral view; 43, 51, ventral view; 45, caudal view; 49, 50, dorsal view. Scale bar of 42 = 1.60 mm; of 43–45 = 1.43 mm; of 46–48 = 1.00 mm; of 49–52 = 0.71 mm.