Acanthaspis geniculata 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 : 30-33

Acanthaspis geniculata Hsiao, 1976

( Figs 92–104, 213 )

Acanthaspis geniculata Hsiao 1976: 82 ; Hsiao & Ren 1981: 457; Ren 1987: 219; Maldonado-Capriles 1990: 386; Putshkov & Putshkov 1996: 186.

Redescription. Colouration. Body brown to black. First antennal segment, spots at external margin of ocelli, rostrum, humeral angles and two discal spots of posterior pronotal lobe, apical spine of scutellum, thochanters, base and apex of each femur, apical half of tibia, posterior half of each segment of connexivum, base of corium and a posterior rounded spot, tarsi, fascia around veins of membrane yellow to pale yellow; eyes black; membrane and abdominal dorsum pale brown ( Figs 92, 213 ).

Structure. Medium sized, pilose. Pro- and mesofemora, coxae and thochanters clothed with long and thick setae ventrally; head, rostrum, two sides of pronotum, and legs with long yellow setae; dorsum of pronotum, abdominal venter and apex with short and long setae; antennae with short brown setae. Head oblong; eyes large; vertex flat, slightly lower than ocelli; transverse constriction behind eyes slightly concave, longitudinal depression between eyes deep and narrow; anteocular portion a little longer than postocular portion; maxillary plate rounded; mandibular plate a little higher than clypeus; head beneath slightly convex; first visible rostral segment longer than second, subequal to length of eye and postocular combined; first antennal segment shorter than head; neck shining ( Figs 92, 93 ). Collar processes small, not prominent; anterior pronotal lobe shorter than posterior lobe, sculptures on anterior lobe shallow, ridges smooth with few fuzz; fuscous area on posterior lobe concave, wrinkled; a pair of small tubercles on posterior margin of disk; humeral angles long and sharp; mid pronotal posterior margin ridged, nearly straight. Scutellum triangular, concavely excavate in middle, apical spine long and sharp; hemelytron of male surpassing abdominal apex, of female reaching ninth abdominal segment; fossula spongiosa occupying about half length of tibia ( Fig. 92). Paramere irregular, median portion with apophysis, apex hooked ( Figs 97–99 ); median process of pygophore thick and spinous, lateral processes small ( Figs 94–96 ); basal plate thick, basal plate bridge short and slender ( Fig. 100 ), pedicel thick and long; median and posterior portion of phallotheca strongly sclerotized; struts fused, reaching subapical portion of phallosoma; endosoma without peculiarities, weakly sclerotized ( Figs. 101–103 ). Female with eighth abdominal tergite broad horizontally, posterior margin nearly straight; ninth and tenth terga fused, posterior angles of lateral margin protruding backward, central part developed, covering styloid from lateral side ( Fig. 92); first valvifer broad, widely triangular, visible part of first valvula long but not surpassing styloid, apex blunt with dense setae; styloid visible from dorsal view, strong and apex sharp.

Measurements [in mm, ♂ (n=1) / ♀ (n=1)]. Body length 22.5/23.0; maximum width of abdomen 6.95/7.5; head length 3.7/3.8; length of anteocular part 1.45/1.50; length of postocular part 1.45/1.50; length of synthlipsis 0.7/0.8; interocellar space 0.15/0.2; length of antennal segments I–IV= 2.7/2.8, 4.7/4.8, 5.8/6.1, 3.4/3.6; length of visible rostral segments I–III= 1.8/1.8, 1.4/1.5, 0.6/0.7; length of anterior lobe of pronotum 1.70/1.75; length of posterior lobe of pronotum 2.6/2.7; maximum width of thorax 6.1/6.2; length of scutellum 2.9/3.0; length of hemelytron 14.5/15.5.

Type material. Holotype, ♂, “ China, Hainan, Jianfeng , 5.V.1964, Liu Shengli ” [rectangular white]”; “ Acanthaspis geniculata Hsiao , holotype, det. Hsiao T. Y., 1965 [rectangular red]” ( TNHM) . Paratype, ♀, “ China, Guangxi, Longzhou ” ( TNHM) .

Other specimens examined. 1♂, “ China, Guangxi Province, Tianyi , 10.VI.1980, Li Yongxi” ( CAU) . 1 ♀, “ China, Guangdong Province, Nanling , 24.VI.1997, Xu Zaifu” ( CAU) . 1 ♂, “ China, Ledong, Jianfengling , 21.V.2009, Huang Xinlei” ( IOZ) . 1♀, “ Type, H. T.”; “ Tonkin, Hoabinh ; Jan.1917; R. V. de Salvaza ”; “ Acanthaspis rufuscululata , type, Dist. [Distant’s handwriting]”; “ms name [handwriting]”; “ Acanthaspis geniculata Hsiao, Det. W. Cai, 2014 ” ( BMNH) .

Distribution in China. Guangxi (Longzhou, Tiane), Hainan (Jianfengling, Yaxian), Guangdong (Nanling) ( Fig. 104 ).

Distribution outside China. Vietnam.

Remarks. This species is similar to A. immodesta in color, but the membrane of the latter species is completely black. The shape of parameres ( Figs 97-99 , 111–113 ), basal plate and basal plate bridge ( Figs 100 , 114 ) and the female terminalia ( Figs 92, 106) are very different.

Figures

FIGURE 104. Distribution of Acanthaspis geniculata Hsiao in China.

FIGURES 212–215. 212, Acanthaspis fuscinervis Hsiao, ♂. Habitus. Scale bar = 3.71 mm; 213, Acanthaspis geniculata Hsiao, ♀. Habitus. Scale bar = 4.72 mm; 214, Acanthaspis immodesta Bergroth, ♀. Habitus. Scale bar = 5.34 mm; 215, Acanthaspis laoensis Distant, ♂. Habitus. Scale bar = 3.29 mm.

FIGURES 93–103. Acanthaspis geniculata Hsiao, ♂. 93, Head and pronotum, antennae removed; 94, 95, pygophore; 96, median pygophore process; 97–99, paramere; 100, basal plate and basal plate bridge; 101–103, phallus. 93, 95, 103, lateral view; 94, 102, ventral view; 96, caudal view; 100, 101, dorsal view. Scale bar of 93 = 1.60 mm; of 94, 95 = 1.43 mm; of 96, 100 = 0.71 mm; of 97–99 = 1.00 mm; of 101–103 = 0.80 mm.

FIGURES 107–117. Acanthaspis immodesta Bergroth, ♂. 107, Head and pronotum, antennae removed; 108, 110, pygophore; 109, median pygophore process; 111–113, paramere; 114, basal plate and basal plate bridge; 115–117, phallus. 107, 108, 117, lateral view; 110, 116, ventral view; 109, caudal view; 114, 115, dorsal view. Scale bar of 107 = 1.67 mm; of 108–110 = 1.60 mm; of 111–113 = 1.00 mm; of 114 = 0.67 mm; of 115–117= 0.80 mm.