Macropygium graziae Silva & Campos 2021, sp. nov.
Creators: name: Silva, Layse Mitsue Harada Da
name: Campos, Luiz Alexandre
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Macropygium
Macropygium graziae

description: Macropygium graziae Silva & Campos, sp. nov.
(Figs 2C–D; 4M–P; 5J–L, W–Y; 6D; 7D; 13; Table 1)
Holotype. Male. Labels: LA PAZ (Dep. San Javier) / Córdoba. / 1-20. I. 1929. C. Bruch (MACN).
Paratypes. ARGENTINA, Buenos Aires, Buenos Aires, 1♀ [-34.599, -58.381] (MACN); Córdoba, La Paz, 2♀, 1928 (MACN); Corrientes, Alvear, 1♀, 1991 (DAR); Entre Rios, 4♀, 1996 (JEE); 1♀, 1991 (DAR); BRAZIL, Santa Catarina, Urussanga, 2010 (UFRG) [-28.499, -49.292]; Rio Grande do Sul, Guaíba, 5♀, 1♂, 1974 [-30.113, -51.325] (1♀ MCNRS, 4♀, 1♂ UFRG); Taim, 2♀, 1982 (UFRG) 1♀, 1985 (MCN) [-32.538, -52.540]; Pelotas, 1♀, 2005 (UFRG) [-31.624, -52.332].
Etymology: the species is named in honor to Jocelia Grazia, for her friendship, guidance, and contributions to the taxonomy of Neotropical pentatomids; noun in apposition.
Distribution: Brazil, Argentina (Fig. 13).
Diagnosis. Antennae four-segmented, length of the second antennomere equals the third and fourth antennomeres combined; lateral projection of dorsal rim of pygophore broad and apart from the posterolateral angle; middle portion of posterior margin of valvifers VIII projected over laterotergites IX, lateral angles not projected.
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Male. Genitalia: conical projection of ventral rim of pygophore bifurcate at apex; posterolateral angles acute, medial projection of posterolateral angles broadly rounded and tumescent, almost attaining the dorsal limit of segment X in lateral view; lateral projection of dorsal rim large, subtriangular, apart from the posterolateral angle, and partially covering the medial projection in lateral view; segment X higher than wide in posterior view, and longer than wide in ventral view (Fig. 4M–P); parameres short, apical projection broad with a second apical process (Fig. 5J–L), largest axis of head less than half the length of stem; vesica without lateral projections; ductus seminis distalis thin, helicoidal in the middle portion (Fig. 5W–Y).
Female. Genitalia: Valvifers VIII partially covering the basal portion of laterotergites IX; middle portion of posterior margin of valvifers VIII projected over laterotergites IX, lateral angles not projected; laterotergites IX with mild lateral depression (Fig. 6D). Folds of valvulae IX occupying almost half the valvulae surface, with few villi, conical microsculptures barely visible; ring sclerites diameter equals the width of vaginal intima, weakly sclerotized and connected to the thickening of vagina intima, this weakly sclerotized; orificium receptaculi about 2/3 the width of vaginal intima (Fig. 7D).
Comments. Macropygium graziae occurs in southern Brazil and northern Argentina (Fig. 13), partially overlapping with M. reticulare and M. spinolae. Macropygium graziae can be distinguished from all Macropygium species by the four-segmented antennae; by the lateral projections of the dorsal rim of pygophore broad and placed apart from the posterolateral angles of the pygophore (Fig. 4O); and by the middle portion of the posterior margin of valvifers VIII projected over laterotergites IX (Fig. 6D).
description: Published as part of Silva, Layse Mitsue Harada Da & Campos, Luiz Alexandre, 2021, Revision of Macropygium Spinola, 1837 (Hemiptera: Pentatomidae: Ochlerini) with the revalidation of three species and the description of one new species, pp. 605-627 in Zootaxa 4958 (1) on pages 622-626, DOI: 10.11646/zootaxa.4958.1.36, http://zenodo.org/record/4692609