Revision of Macropygium Spinola, 1837 (Hemiptera: Pentatomidae: Ochlerini) with the revalidation of three species and the description of one new species Author Silva, Layse Mitsue Harada Da 0000-0002-0143-2898 mitsuehs @ gmail. com; https: // orcid. org / 0000 - 0002 - 0143 - 2898 mitsuehs@gmail.com Author Campos, Luiz Alexandre text Zootaxa 2021 2021-04-14 4958 1 605 627 journal article 7200 10.11646/zootaxa.4958.1.36 ffb2d1bf-4968-4716-9049-7dd3666d2c31 1175-5326 4692609 1616997B-867D-45CD-8470-515C39815F89 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 ). FIGURE 13. Distribution map of Macropygium spinolae Stål, 1860 , and Macropygium graziae Silva & Campos , sp. nov .. 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. TABLE 1. Morphometric parameters, in millimeters, for the species of Macropygium .

M. reticulare	M. spinolae	M. bifidum	M. subsulcatum	M. graziae sp. nov
♂
Head length	1.76 ± 0.16 (1.55–2.01)	1.55 ± 0.14 (1.30–1.70)	1.65 ± 0.22 (1.40–1.99)	−	1.60 ± 0.26 (1.40–1.90)
Head width	2.58 ± 0.14 (2.40–2.80)	2.47 ± 0.15 (2.30–2.70)	2.43 ± 0.07 (2.30–2.51)	−	2.31 ± 0.27 (2.00–2.45)
Antennomere I	0.84 ± 0.10 (0.80–0.99)	0.66 ± 0.06 (0.60–0.80)	0.71 ± 0.06 (0.60–0.77)	−	0.64 ± 0.08
Antennomere II	0.60 ±0.07 (0.50–0.70)	0.63 ± 0.06 (0.55–0.70)	0.65 ± 0.06 (0.60–0.74)	−	2.23 ± 0.30
Antennomere III	2.00 ± 0.17 (1.70–2.29)	1.80 ± 0.28 (1.40–2.50)	2.05 ± 0.22 (1.70–2.40)	−	1.32 ± 0.25
Antennomere IV	1.72 ± 0.17 (1.50–1.88);	1.60 ± 0.37 (1.30–2.90)	1.69 ± 0.14 (1.60–2.00)	−	1.85 ± 0.07
Antennomere V	1.86 ± 0.20 (1.30–2.13)	1.72± 0.23 (1.30–2.00)	1.73 ± 0.25 (1.50–2.00)	−	−
Labial article I	1.25 ± 0.09 (0.98–1.36)	1.16 ±0.06 (1.10–1.30)	1.07 ± 0.06 (0.99–1.17)	−	0.99 ± 0.2 (0.55–0.70)
Labial article II	1.74 ± 0.15 (1.51–1.98)	1.73 ± 0.16 (1.50–2.00)	1.56 ± 0.08 (1.45–1.73)	−	1.50 ± 0.40 (1.90–2.50)
Labial article III	1.31 ± 0.17 (0.99–1.39)	1.33 ± 0.14 (1.10–1.67)	1.07 ± 0.09 (0.98–1.20)	−	1.32 ± 0.20 (1.14–1.50)
Labial article IV	1.08 ± 0.09 (0.93–1.24)	1.04 ± 0.11 (0.90–1.20)	0.98 ± 0.03 (0.90–1.10)	−	1.85 ± 0.07 (1.80–1.90)
Pronotum length	2.62 ± 0.21 (2.34–2.94)	2.41 ± 0.25 (1.90–2.80)	2.37 ± 0.15 (2.20–2.44)	−	2.26 ± 0.40 (1.80–2.60)
Anterior width	3.16 ± 0.26 (2.84–3.72)	3.24 ± 0.24 (2.80–3.70)	3.05 ± 0.07 (2.99–3.20)	−	2.86 ± 0.30 (2.50–3.10)
Humeral width	6.08 ± 0.38 (5.60–7.00)	6.05 ± 0.40 (5.50–6.60)	6.14 ± 0.18 (5.80–6.33)	−	5.50 ± 0.70 (4.70–6.10)
Scutellum length	4.1 ± 0.29 (3.70–5.00)	4.34 ± 0.29 (3.90–5.00)	4.28 ± 0.24 (4.00–4.80)	−	3.80 ± 0.30 (3.40–4.00)
Scutellum width	3.83 ± 0.21 (3.55–4.10)	3.87 ± 0.34 (3.40–4.30)	3.92 ± 0.16 (3.70–4.20)	−	3.46 ± 0.50 (2.90–3.90)
Abdominal width	7.00 ± 0.60 (6.40–8.30)	7.00 ± 0.37 (6.50–7.50)	6.79 ± 0.23 (6.40–7.00)	−	6.40 ± 0.60 (5.70–6.90)
Total length	11.80 ± 0.70 (10.00–12.50)	10.99 ± 1.02 (9.60–12.48)	11.19 ± 0.37 (10.70–11.70)	−	10.85 ± 0.20 (10.70–11.00)
Pygophore length	2.44 ± 0.11 (2.25–2.60)	2.50 ± 0.12 (2.32–2.69)	2.23 ± 0.09 (2.10–2.40)	−	2.00 ± 0.20 (1.72–2.20)

......continued on the next page TABLE 1. (Continued)

M. reticulare	M. spinolae	M. bifidum	M. subsulcatum	M. graziae sp. nov
♀
Head length	1.70 ± 0.17 (1.40–2.00)	1.57 ± 0.13 (1.2–1.61)	1.60 ± 0.07 (1.51–1.70)	1.51	1.30 ± 0.08 (1.22–1.39)
Head width	2.58 ± 0.14 (2.40–2.80)	2.50 ± 0.15 (2.10–2.80)	2.43 ± 0.07 (2.30–2.51)	2.54	2.18 ± 0.07 (2.05–2.27)
Antennomere I	0.67 ± 0.04 (0.60–0.70)	0.66 ± 0.06 (0.58–0.68)	0.72 ± 0.03 (0.68–0.79)	0.75	0.83 ± 0.10 (0.70–1.00)
Antennomere II	0.57 ± 0.04 (0.50–0.60)	0.63 ± 0.06 (0.50–0.70)	0.67 ± 0.06 (0.59–0.83)	0.62	1.74 ± 0.14 (1.55–1.92)
Antennomere III	1.84 ± 0.18 (1.50–2.10)	1.80 ± 0.20 (1.40–2.20)	2.00 ± 0.20 (1.80–2.01)	1.63	1.30 ± 0.07 (1.20–1.42)
Antennomere IV	1.61 ± 0.09 (1.45–1.80)	1.60 ± 0.37 (1.30–2.90)	1.70 ± 0.18 (1.50–1.92)	−	0.80 ± 0.09 (0.64–0.89)
Antennomere V	1.80 ± 0.14 (1.55–2.00)	1.70 ± 0.23 (1.30–2.00)	1.64 ± 0.30 (1.20–2.10)	−	−
Labial article I	1.22 ± 0.08 (1.00–1.30)	1.16 ± 0.06 (1.08–1.30)	1.29 ± 0.27 (0.90–1.80)	1.27	0.95 ± 0.03 (0.95–1.00)
Labial article II	1.70 ± 0.18 (1.60–2.10)	1.80 ± 0.37 (1.50–1.30)	1.88 ± 0.28 (1.50–2.30)	2.05	1.48 ± 0.07 (1.36–1.52)
Labial article III	1.28 ± 0.05 (1.20–1.33)	1.33 ± 0.14 (1.10–1.67)	1.12 ± 0.16 (0.99–1.48)	1.20	0.94 ± 0.09 (0.80–1.05)
Labial article IV	1.01 ± 0.07 (0.90–1.10)	1.04 ± 0.11 (0.90–1.30)	1.01 ± 0.08 (0.90–1.20)	1.09	0.80 ± 0.09 (0.64–0.89)
Pronotum length	2.66 ± 0.19 (2.30–2.90)	2.60 ± 0.21 (2.40–3.10)	2.53 ± 0.22 (2.20–2.51)	2.51	2.37 ± 0.22 (2.04–2.60)
Anterior width	3.35 ± 0.27 (2.90–3.60)	3.60 ± 0.22 (3.00–3.80)	3.20 ± 0.22 (2.99–3.60)	3.23	2.70 ± 0.13 (2.50–2.88)
Humeral width	6.70 ± 0.40 (6.20–7.40)	6.30 ± 0.40 (5.60–6.90)	6.70 ± 0.5 (6.10–7.50)	6.27	5.69 ± 0.35 (5.16–6.17)
Scutellum length	4.60 ±0.25 (4.30–4.80)	4.60 ± 0.22 (4.30–5.00)	4.47 ± 0.50 (4.00–5.80)	4.38	4.01 ± 0.11 (3.84–4.10)
Scutellum width	4.24 ± 0.20 (3.90–4.50)	4.20 ± 0.32 (3.90–4.90)	4.20 ± 0.37 (3.70–4.69)	3.92	3.62 ± 0.20 (3.40–3.90)
Abdominal width	7.70 ±0.40 (7.10–8.40)	7.50 ± 0.28 (6.90–8.00)	7.50 ± 0.60 (6.55–8.50)	7.18	6.14 ± 0.18 (5.82–6.31)
Total length	12.23 ± 0.70 (11.00–13.10)	12.16 ± 0.46 (11.50–12.90)	12.70 ± 0.90 (11.30–13.88)	11.08	10.18 ± 0.13 (10.00–10.25)

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 ).