Acanthaspis octoguttata, Cao & Rédei & Li & Cai, 2014

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 : 42-43

Acanthaspis octoguttata sp. nov.

( Figs 145–156, 217 )

Description. Colouration. Body black; spots on humeral area of pronotum, subapical portion of femora and posterior half of each connexival segment pale reddish; basal corium and spot on inner angle of corium dark red, spot on membrane yellowish; apical portion of tibia reddish brown; tarsi dull brown; ventral side of abdomen pale brown ( Figs 145, 217 ).

Structure. Body large, pilose. Body clothed with yellowish brown short setae, intermixed with brown long setae; first antennal segment and pedicel, rostrum, dorsal side of head and pronotum, scutellum, femora and tibiae with brown setae; ventral side of head with dense pubescence. Head oblong, short, anteocular portion slightly longer than postocular; transverse constriction behind eyes wide and deep; longitudinal depression between eyes slender and deep, apex wider; mandibular plate between antennifers a little prominent, slightly higher than anteclypeus; maxillary plate a little prominent, apex round; gena prominent; ocellar area prominent; first visible rostral segment longer than second, apical segment triangular; first antennal segment slightly shorter than head in length, curved ( Figs 145, 146 ). Collar processes small; anterior pronotal lobe shorter than posterior, with distinct sculpture, posterior lobe wrinkled medially, concave laterally; humeral angles simple, without tubercle or spine, posterior margin nearly straight. Scutellum triangular, with a central concave impression, apical spine thick, strongly erect, apex sharp; hemelytron slightly surpassing abdominal apex; fossula spongiosa of fore leg longer than half of protibia, that of mid leg about half of mesotibia ( Fig. 145). Parameres irregularly club-shaped, slender at base and swollen mid and apical portions, curved, apex hooked ( Figs 150–152 ); median process of pygophore foot-like in lateral view, beside median process with a pair of sclerotized processes ( Figs 147–149 ); basal plate thick, basal plate bridge narrow, pedicel thick; posterior half of phallotheca sclerotized; struts fused; lateral processes of endosoma small, apex rounded ( Figs 153–155 ). Female with visible eighth abdominal tergite narrow and broad, posterior margin arc; ninth and tenth terga fused, twice longer than eighth tergite, sub-lateral margin swollen, central portion depressed, apex swollen; first valvifer narrow and broad, visible part of first valvula not surpassing styloid, apex blunt with dense setae; styloid visible from dorsal view, apex sharp.

Measurements [in mm, ♂ (n=1) / ♀ (n=1)]. Body length 21.0/19.4; maximum width of abdomen 7.2/7.4; Head length 3.4/3.3; length of anteocular part 1.7/1.3; length of postocular part 1.2/1.1; length of synthlipsis 1.1/ 0.9; interocellar space 0.3/0.2; length of antennal segments I–IV= 2.7/missing, 3.9/missing, missing/missing, missing/missing; length of visible rostral segments I–III= 1.9/1.8, 1.2/1.0, 0.6/0.6; length of anterior lobe of pronotum 2.0/1.9; length of posterior lobe of pronotum 2.6/2.6; maximum width of thorax 6.1/5.7; length of scutellum 1.9/2.0; length of hemelytron 13.5/14.2.

Type materials. Holotype, ♂, “ China, Hainan, Jianfengling , 15.X.1982 ” [rectangular, white]; “ Holotype, Acanthaspis octoguttata Cao, Rédei, Li & Cai ” [rectangular, red] ( CAU) . Paratype, ♀, “ China, Guangdong, Liangxian, Dadongshan, 15.VI.1992, Chen Zhiming ”; “ Paratype, Acanthaspis octoguttata Cao, Rédei, Li & Cai ” [rectangular, red] ( CAU) .

Distribution. China: Hainan (Jianfengling), Guangdong (Liangxian) ( Fig. 156 ).

Etymology. The specific name refers to the presence of altogether eight contrasting spots on the pronotum and forewings.

Remarks. This large species more or less resembles A. immodesta in colour pattern, but it can be easily distinguished from it by its rounded humeral angles (vs. A. immodesta with humeral angles cone-shaped) and the short median pygophore process and paramere shape (vs. A. immodesta with median pygophore process big and different paramere).

Figures

FIGURE 156. Distribution of Acanthaspis octoguttata sp. nov. in China.

FIGURES 216–219. 216, Acanthaspis melanota sp. nov. ♂. Habitus. Scale bar = 3.86 mm; 217, Acanthaspis octoguttata sp. nov. ♂. Habitus. Scale bar = 4.01 mm; 218, Acanthaspis picta Hsiao, ♂. Habitus. Scale bar = 4.02 mm; 219, Acanthaspis quinquespinosa (Fabricius), ♀. Habitus. Scale bar = 3.75 mm.

FIGURES 146–155. Acanthaspis octoguttata sp. nov., ♂. 146, Head and pronotum, antennae removed; 147, median pygophore process; 148, 149, pygophore; 150–152, paramere; 153–155, phallus. 146, 148, 155, lateral view; 149, 154, ventral view; 147, caudal view; 153, dorsal view. Scale bar of 146 = 1.67 mm; of 147–149= 1.60 mm; of 150–152 = 1.00 mm; of 153–155 = 0.80 mm.