Acanthaspis immodesta Bergroth, 1914

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 : 33-36

Acanthaspis immodesta Bergroth, 1914

( Figs 105–118 , 214 )

Acanthaspis immodesta Bergroth 1914: 363 ; Esaki 1926: 165; Gaedike 1971: 131; Hsiao 1976: 80; Hsiao & Ren 1981: 455; Maldonado-Capriles 1990: 386; Putshkov & Putshkov 1996: 186.

Redescription. Colouration. Body black. Antennifers, spots laterad to ocellar area, humeral angles of pronotum, apical spine of scutellum, posterior half of each connexival segment, apical and basal portions of femur and tibia orange; rostrum, ocelli, base of corium and a rounded apical spot, tarsi yellow; antennae, annulations on mesofemur, veins of membrane brown ( Figs 105 , 106, 214 ).

Structure. Medium sized, oblong. Fore and mid legs clothed with short and long thick setae; hind legs, abdominal venter, ventral side of head, rostrum with fewer short and long setae; dorsal side of head, pronotum, and apical spine of scutellum with a few setae. Head oblong; eyes median sized; supraclypeus as high as eyes; anteclypeus cylindrical; mandibular plates a little higher than clavus; maxillary plate wide and flat; longitudinal depression between eyes shallow and narrow, just a short portion posteriorly deep; transverse constriction behind eyes deep and wide; anteocular portion little longer than postocular; ocellar area highly elevated; first visible rostral segment longer than second; first antennal segment longer than head, thick, second segment slightly thinner, the last two segments filiform ( Figs 105–107 ). Collar processes tuberculiform; anterior pronotal lobe shorter than posterior; posterior pronotal lobe flat in middle, wrinkled, concave sublaterally; humeral angles cone-shaped and short; disk with a pair of small tubercles; mid posterior margin nearly straight, with a pair of ridge laterally; scutellum triangular, concavely excavated in the middle, apical spine long and sharp; hemelytron of male surpassing abdominal apex ( Fig. 105 ). Paramere irregular, apical third curved, apex spinously tapering ( Figs 111–113 ); median process of pygophore thick, long, spiniform ( Figs 108–110 ); basal plate of phallus slender, basal plate bridge long and slender ( Fig. 114 ); apical half of dorsal phallothecal sclerite sclerotized; struts fused, surpassing apex of phallosoma, apex with a U-shaped concavity, lateral portion with a hook; endosoma without peculiarities, weakly sclerotized ( Figs 115–117 ). Female with eighth abdominal tergite small, posterior margin arc; ninth and tenth terga fused, much longer than eighth tergite, posterior angles of lateral margin slightly protruding backward, shorter than A. geniculata , central part developed, posterior margin short and straight ( Fig. 106); first valvifer broad triangular, 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)]. Body length 24.3; maximum width of abdomen 8.2; Head length 3.3; length of anteocular part 1.7; length of postocular part 1.4; length of synthlipsis 0.9; interocellar space 0.2; length of antennal segments I–IV= 3.3, 5.35, 6.5, 4.6; length of rostral segments I–III= 2.0, 1.5, 0.6; length of anterior lobe of pronotum 2.1; length of posterior lobe of pronotum 3.1; maximum width of thorax 7.1; length of scutellum 3.2; length of hemelytron 16.6.

Type material. Lectotype (designated by Gaedike 1971), from Taiwan, preserved in Deutsches Entomologische Institute , Müncheberg, Germany.

Other specimens examined. 1 ♂, “ China, Taiwan, Shih Tou Shan , Miaoli County, 2.VI.1976, J. Okuma leg, light trap ” ( CAU) ; 1♀, Taiwan, VI.2010, light trap ( CAU) .

Distribution. China: Taiwan (Shih Tou Shan, Kosempo) ( Fig. 118 ).

Remarks. This species is endemic to Taiwan. The species is rare and only few specimens have been known.

Figures

FIGURE 105. Acanthaspis immodesta Bergroth, ♂. Habitus. Scale bar = 3.33 mm.

FIGURE 118. Distribution of Acanthaspis immodesta Bergroth 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 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.