Acanthaspis westermanni Reuter, 1881

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 : 57-60

Acanthaspis westermanni Reuter, 1881

( Figs 195–207 , 222, 223 )

Acanthaspis westermanni Reuter 1881: 60 ; Lethierry & Severin 1896: 106; Wu 1935: 457; China 1940: 252; Hoffmann 1944:

19; Hsiao 1976: 80; Hsiao & Ren 1981: 457; Maldonado-Capriles 1990: 389; Putshkov & Putshkov 1996: 187. Acanthaspis aberrans China 1940: 218 ; Hoffmann 1944: 17.

Redescription. Colouration. Brown to dark brown. Clypeus, spots at external side of ocelli, dorsum of neck, ridges of anterior pronotal lobe, posterior pronotal lobe, longitudinal fascia on corium, annulations on femora and tibiae, tarsi, posterior part of each connexival segment yellow to pale yellow; apical three antennal segments, apical spine of scutellum yellowish brown, membrane pale brown ( Figs 195 , 196 , 222, 223 ).

Structure. Small sized, pilose. Body clothed with short and long shining golden setae, long setae abundant, and antennae with brown short setae. Head oblong, eyes large; postocular portion about as long as two thirds of anteocular portion; longitudinal depression between eyes shallow except basally; mandibular plate prominent between antennifers, right-angled; maxillary plates normal, as high as gena; transverse constriction posteriad to eyes wide and deep; postocular portion round, ocelli area swollen and strongly prominent; first visible rostral segment as long as second; first antennal segment slightly shorter than length of head, with sparser setae than other segments ( Figs 195 , 197 ). Collar small, processes cone-shaped, anterior margin nearly straight; anterior pronotal lobe shorter than posterior, deeply sculptured, with a longitudinal short tridentate ridge in the middle; posterior lobe with shallow and regular wrinkles and a thin fossa in the middle anteriorly, also concave sublaterally; humeral angles long and sharp, recurved; discal area flat, unarmed; posterior portion of posterior lobe strongly declivous. Scutellum triangular, slightly concave in middle and without lateral ridges, apical spine long. Hemelytron of male surpassing abdominal apex; female generally brachypterous, with broad body ( Fig. 196 ). Paramere thick, submedian portion curved, inner angle dentate ( Figs 200–202 ); median process of pygophore medium-sized, slightly curved inside ( Figs 198, 199 ); basal plate arched and thick; basal plate bridge long and thick ( Fig. 206 ); pedicel thick; apical dorsal phallothecal sclerite sclerotized, sclerotized portion protruding posteriad; struts wide, base fused, reaching two-third of phallosoma; endosoma translucent, without any tuber, thorn or spur ( Figs 203–205 ). Female with visible eighth abdominal tergite big and broad, posterior margin arc; ninth and tenth tergites fused, center swollen, lateral margin with long golden setae; first valvifer big and broad, visible part of first valvula small, apex blunt with spare setae; styloid invisible.

Measurements [in mm, ♂ (n=5) / ♀ (n=1)]. Body length 10.8–12.7/12.0; maximum width of abdomen 3.2–4.3/5.0; Head length 1.7–1.8/1.7; length of anteocular part 0.9–1.0/0.9; length of postocular part 0.3–0.4/0.3; length of synthlipsis 0.6–0.7/0.55; interocellar space 0.15–0.2/0.2; length of antennal segments I–IV= 1.1–1.3/1.2, 2.6–2.7/2.5, 3.2–3.6/3.3, 2.3–2.5/2.2; length of visible rostral segments I–III= 0.8–0.95/0.75, 0.8–0.85/0.75, 0.4–0.45/0.4; length of anterior lobe of pronotum 0.8–0.85–0.9; length of posterior lobe of pronotum 1.3–1.6/1.2; maximum width of thorax 3.3–3.5/3.2; length of scutellum 1.1–1.3/1.1; length of hemelytron 7.3–8.5/3.9.

Type material. Holotype, from Hong Kong, preserved in the Zoological Museum , University of Copenhagen , Copenhagen, Denmark. Not examined.

Other specimens examined. 1 ♂, “ China, Yunnan, Banna, Menga” ( CAU) . 1 ♂, “ China, Fujian, Wuyishan, Sangang , 24.V.1986, Li Weihua” ( CAU) . 1 ♂, “ China, Guangxi, Jinxiu, Dayaoshan , 24.VII.2005, Zhao Ping” ( CAU) . 1 ♂, “ China, Taiwan, Nantou, Hewangshan , 7.X.1995, Lu” ( CAU) . 1 ♂, “ China, Hainan, Ledong, Jianfengling, Beiganxian , 9.VIII.2007, Zhang Wenjie” ( CAU) . 1 ♀, “ China, Guangdong, Huizhou, Xiangtoushan , 11.V.2001, Wang Mengqing” ( CAU) . 1 ♂, “ China, Hainan, Baisha, Yinggezui , 16.XI.2001, Shi Hongliang” ( IOZ) .

Distribution in China. Yunnan (Mengla, Menghai), Fujian, Guangdong (Fengkai, Shixing, Meixian, Dinghushan), Guangxi (Yangsuo, Shangsi), Hainan (Tongshen, Sanya, Baisha), Jiangxi (Nanchang), Taiwan, Hong Kang ( Fig. 207 ).

Remarks. The identification of this species is based on Hsiao & Ren’s (1981) redescription. This is a smaller member of Acanthaspis in China and is easy to identify.

Figures

FIGURE 195. Acanthaspis westermanni Reuter, ♂. Habitus. Scale bar = 1.82 mm.

FIGURE 196. Acanthaspis westermanni Reuter, ♀. Habitus. Scale bar = 2.00 mm.

FIGURES 197–206. Acanthaspis westermanni Reuter, ♂. 197, Head, pronotum and scutellum, antennae removed; 198, 199, pygophore; 200–202, paramere; 203–205, phallus; 206, basal plate and basal plate bridge. 197, 198, 203, lateral view; 199, 204, ventral view; 205, 206, dorsal view. Scale bar of 197 = 1.00 mm; of 198, 199 = 0.50 mm; of 200–202 = 0.40 mm; of 203–206 = 0.33 mm.

FIGURE 207. Distribution of Acanthaspis westermanni Reuter in China.

FIGURES 220–223. 220, Acanthaspis quinquespinosa (Fabricius), ♂. Habitus. Scale bar = 3.90 mm; 221, Acanthaspis ruficeps Hsiao, ♂. Habitus. Scale bar = 3.90 mm; 222, Acanthaspis westermanni Reuter, ♂. Habitus. Scale bar = 2.44 mm; 223, Acanthaspis westermanni Reuter, ♀. Habitus. Scale bar = 2.65 mm.