Tynacantha umeridenigrata Brugnera & Grazia, 2019

Brugnera, Ricardo, Campos, Luiz Alexandre & Grazia, Jocelia, 2019, Revision of Tynacantha Dallas with description of two new species (Hemiptera: Heteroptera: Pentatomidae: Asopinae), Zootaxa 4656 (3), pp. 445-458 : 454

Tynacantha umeridenigrata Brugnera & Grazia sp. nov.

( Figures 16–18 , 52–53 , 55 )

Holotype ♀, BRAZIL, Rondônia, Ouro Preto , V. 1980, A. C. Mendes leg., ( MZUSP).

Diagnosis. Dorsal coloration brown, apex of scutellum with a calloused, crescent-like pale spot, humeral angles black and punctured; punctures black, deep and close to each other; intersegmental areas of connexivum black ( Figs 16–18 ); posterior margins of gonocoxites VIII sinuous ( Figs 52–53 ).

Measurements. Total length, ♀ 11.92; width of abdomen across segment III, ♀ 5.80; head: length, ♀ 2.00; width, ♀ 2.00; pronotum: length, ♀ 2.40; width, ♀ 5.60; scutellum: length, ♀ 3.80; width, ♀ 3.32; length of anten- nal segments: I, ♀ 0.28; II, ♀ 1.44; III, ♀ 1.28; IV, ♀ missing; V, ♀ missing; length of labial segments: I, ♀ 1.28; II, ♀ 1.60; III, ♀ 1.04; VI, ♀ 0.92.

Etymology. From umeri (Latin) and denigratum (Latin), in reference to the darkened color of humeral angles.

Distribution. Brazil (Rondônia) ( Fig. 55 ).

Remarks. Male unknown.

Figures

FIGURES 7–18. Habitus of species of Tynacantha in dorsal, ventral and head + pronotum views, respectively. 7–9, Tynacantha marginata; 10–12, Tynacantha splendens; 13–15, Tynacantha cuprea sp. nov.; 16–18, Tynacantha umeridenigrata sp. nov.. Scale bars: 1 mm.

FIGURES 46–53. Female external and internal genitalia of Tynacantha. Genital plates (46–47, 49–50, 52–53). Internal genitalia (48, 51). 46–48, Tynacantha marginata; 49–51, Tynacantha cuprea sp. nov.; 53–53, Tynacantha umeridenigrata sp. nov.. Abbreviations: aaf = anterior annular flange; cs = capsula seminalis; drd = ductus receptaculi distalis; drp = ductus receptaculi proximalis; paf = posterior annular flange; pi = pars intermedialis; rs = ring sclerites; st = secondary thickening of gonapophyses IX; tvi = thickening of vaginal intima; va = vesicular area Scale bars: 46–47, 49–50, 52–53 = 1 mm; 48–51 = 0,1 mm.

FIGURES 54–56. Geographic distribution of the species of Tynacantha. 54, Tynacantha marginata; 55, Tynacantha cuprea sp. nov. and Tynacantha umeridenigrata sp. nov.; 56, Tynacantha splendens.