Taxonomic updates on the Mecocephala group (Hemiptera: Pentatomidae) Redescription of ‘ Hypatropis complex’, with a review of genitalic terminology and new records Author Barros, Lurdiana D. Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Campus do Vale, Federal University of Rio Grande do Sul, Avenue Bento Gonçalves, 9500, Porto Alegre 91501 - 970, Brazil. Author Barão, Kim R. Laboratory of Systematics and Diversity of Arthropods, Penedo Educational Unit, Arapiraca Campus, Federal University of Alagoas, Avenue Beira Rio, s / n, Penedo 57200 - 000, Brazil. Author Grazia, Jocelia Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Campus do Vale, Federal University of Rio Grande do Sul, Avenue Bento Gonçalves, 9500, Porto Alegre 91501 - 970, Brazil. text Zootaxa 2021 2021-06-03 4981 1 1 46 journal article 5931 10.11646/zootaxa.4981.1.1 a6f5f409-8f2f-442a-915a-bbe8129d625a 1175-5326 4897374 C98FB7A5-59AD-4D8D-9900-3EAFA339C537 Pedinonotus catarinensis Fernandes & Grazia, 2002 Figs 184 , 185–193 , 194–202 , 203, 205, 207–208, 211 Pedinonotus Fernandes & Grazia, 2002: 1–7 ; Barão et al . 2017: 110 , figs 4I, 5J; Barros et al . 2020a: 1064–1065 , 1069; Barros et al . 2020b: 321–322 , 354–355, fig. 18Q. Type material examined. Holotype ♂ , BRAZIL , Santa Catarina , Nova Teotônia , Seara , XII.1939 , F. Plaumann leg. ( AMNH ) <illustrated specimen >. Paratypes : BRAZIL , Santa Catarina , Nova Teotônia , Seara , ♂ <illustrated specimen>, 2♀ , IX.1939 , F. Plaumann leg. ( AMNH ); same data, ♀ , 300–500m , 24.IX.1966 ( USNM ); same data, 2♀ , V.1967 ( AMNH ); same data, ♀ , X.1969 , L.H. Rolston coll. ( AMNH ) <illustrated specimen >. Diagnosis. Mandibular plates longer than clypeus; lateral margins of mandibular elevate in relation to the plan of mesial margins. Proportions of antennomeres: 1> 2 <3> 4 <5 ( Fig. 185 ). Median labium, reaching the mesocoxae. Proportions of labiomeres: 1 <2> 3> 4 ( Fig. 190 ). Processes of anterior angles of pronotum obtuse. Anterolateral margins of pronotum crenulate; posterior margin of pronotum straight ( Fig. 188 ). Peritreme of ESES reaching about 1/3 of the distance to lateral margin of evaporatorium; median furrow of the peritreme long, reaching more than half of peritreme; evaporatorium of mesopleuron reaching more than half of the segment and less half of metapleuron, present in posterior lateral angles and absent in a diagonal from mesepimeron to mesepisternum. Anterolateral margin of evaporatorium tapered. Outer margin of metapleural evaporatorium straight. Gyrification of evaporatorium with low wrinkles. ( Figs 191–193 ). Metathoracic spiracle wide ( Fig. 191 ). Hemelytra surpassing the abdominal apex ( Fig. 185 ). Spiracles black. Mesial area adjacent to spiracles with callosity ( Figs 186–187 ). FIGURES 185–193. Pedinonotus catarinensis Fernandes & Grazia, 2002 . 185–187: Holotype, habitus dorsal, ventral and lateral; 188–190: Head in dorsal, lateral and ventral view; 191–193: SEM images of external scent efferent system of metasternal glands. 191: evaporatorium; 192–193: detail of evaporatorium. Scale bars: 185–187: 1.0 mm; 188–190: 0.5 mm; 191: 500 μm, 192–193: 100 μm. FIGURES 194–202. Pedinonotus catarinensis Fernandes & Grazia, 2002 . 194–197: Pygophore in dorsal, posterior and ventral view; 198–200: Phallus in dorsal, lateral, ventral and posterolateral view; 201: Genital plates in posteroventral view; 202: Female receptaculum seminis and aussenwand. Abbreviations : par, paramere; pslvr, process of superior layer of ventral rim. Scale bars: 194–197: 1.0 mm; 198–200: 0.25 mm; 201–202: 0.5 mm. (Left paramere and segment X not showing). Measurements. See Table 1 . Male genitalia. Posterolateral angles of pygophore quadrate. Genital cup broad, occupying more than half of pygophore length. Middle region of dorsal rim entire. Extension of dorsal rim well-developed. Area between layers of ventral rim excavated, separated by a carina ( Fig. 197 , black arrow). Superior layer of ventral rim with two pairs of processes ( Fig. 195 ); lateral margin of superior layer notched, in superior view. Inferior layer of ventral rim without process. Segment X ogival (rectangular with arcuate apex), not carinate, with tumescence basally ( Figs 194–197 ). Parameres present, crown reduced ( Fig. 194 ). Phallus ( Figs 198–200 ): Dorsal connectives shorter, not reaching the distal half of phallotheca . Processus capitati long. Phallotheca wider than long. Dorsal processes of phallotheca uniformly wide, straight, and longer relative to posterodorsal projections. Conjunctiva with two pairs of processes, one membranous and one sclerotized ( Fig. 200 ), and three pairs of lobes, median lobe sclerotized. Ductus seminis distalis longer. Female genitalia. Valvifers 8 convex, at least twice as much in length to laterotergites 9, posterior margins sinuous. Valvifers 9 flat, with anterior and posterior margins straight; sclerotized lateral arms attaining anterior margins of laterotergites 9. Posterior margins of laterotergites 8 obtusely projected; each lateral margin with process. Mesial margins of laterotergites 9 divergent, posterior margins obtusely projected, not surpassing abdominal tergite 8 ( Fig. 201 ). Ectodermal ductus ( Fig. 202 ): Proximal ductus receptaculi twisted, short, in relation to vesicular area, greater diameter. Distal ductus receptaculi straight, shorter than vesicular area. Annular flanges divergent related to each other. Anterior annular flange smaller than pars intermedialis and posterior annular flange thinner in relation to capsula seminalis . Capsula seminalis globose. Distribution. Brazil ( Santa Catarina ) ( Fig. 184 ). FIGURES 203–212. Comparative figure of Pedinonotus catarinensis and Prolatucoris mandibulatus . Habitus dorsal: 203: P. catarinensis , 204: P. mandibulatus . Head and pronotum, ventral view: 205, P. catarinensis , 206, P. mandibulatus . Male genitalia pygophore in dorsal and posterior view: 207–208: P. catarinensis , 209–210: P. mandibulatus . Female genitalia: 211: P. catarinensis , 212: P. mandibulatus . Scale bars: 203–204; 207–208: 1.0 mm; 205–206, 211–212: 0.5 mm; 209–210: 0.2 mm. TABLE 1. Morphometric parameters measured of complex Hypatropis species. Abbreviations : A1, length of antennomere 1; A2, length of antennomere 2; A3, length of antennomere 3; A4, length of antennomere 4; A5, length of antennomere 5; BW, body width; BL, body length; CL, length of clypeus; HL, head length; HLE, length of head at compound eye level; HW, head width; IOD, interocular distance; L1, length of labiomere 1; L2, length of labiomere 2; L3, length of labiomere 3; L4, length of labiomere 4; PL, pronotum length; PW, pronotum width; SL, scutellum length; SW, scutellum width.

Measurements
Antenna
Species	HL	HW	HLE	IOD	CL	A1	A2	A3	A4	A5
Hypatropis australis	1.50±0.05 (1.45–1.55) 3	1.82±0.12 (1.75–1.95) 3	0.79±0.03 (0.78–0.83) 3	1.14±0.03 (1.12–1.18) 3	0.73±0.09 (0.68–0.83) 3	0.45 2	0.38 2	0.76 2	-	-
Hypatropis inermis	1.49±0.09 (1.35–1.65) 14	1.83±0.09 (1.73–2.04) 14	0.85±0.06 (0.75–0.93) 8	1.16±0.08 (1.08–1.35) 14	0.93±0.05 (0.88–1.00) 9	0.34±0.03 (0.30–0.38) 7	0.34±0.03 (0.30–0.38) 7	0.66±0.09 (0.55–0.75) 7	0.58±0.04 (0.55–0.62) 7	0.72±0.05 (0.68–0.80) 6
Hypatropis rolstoni	1.62 2	1.92±0.07 (1.88–2.00) 3	0.93±0.06 (0.88–1.00) 3	1.21±0.04 (1.18–1.25) 3	1.04±0.07 (1.00–1.12) 3	0.50±0.00 (0.50–0.50) 3	0.51±0.10 (0.45–0.62) 3	1.01±0.06 (0.95–1.07) 3	0.83±0.09 (0.75–0.93) 3	1.02±0.09 (0.95–1.12) 3
Hypatropis similis	1.62 1	1.86 1	0.81 1	1.22 1	-	0.49 1	0.41 1	0.97 1	0.81 1	0.97 1
Hypatropis sternalis	1.48±0.04 (1.42–1.50) 5	1.84±0.04 (1.77–1.88) 5	0.93 1	1.17±0.06 (1.08–1.23) 5	-	0.38 1	0.30 1	0.70 1	-	-
Amauromelpia miri	1.65±0.09 (1.57–1.75) 3	1.83±0.07 (1.75–1.88) 3	0.93±0.10 (0.88–1.05) 3	1.08±0.04 (1.05–1.12) 3	0.94±0.14 (0.80–1.07) 3	0.47±0.03 (0.45–0.50) 3	0.40±0.04 (0.38–0.45) 3	0.81±0.06 (0.75–0.88) 3	0.72±0.03 (0.70–0.75) 3	0.97±0.03 (0.95–1.00) 3
Amauromelpia ussu	1.92±0.10 (1.80–2.05) 8	2.16±0.09 (2.00–2.25) 8	1.06 2	1.24±0.04 (1.18–1.30) 8	1.20±0.06 (1.12–1.30) 8	0.52±0.03 (0.50–0.57) 8	0.42±0.04 (0.38–0.45) 8	1.13±0.07 (1.07–1.25) 8	0.91±0.03 (0.88–0.95) 5	1.14±0.09 (1.00–1.25) 5
Luridocimex wygodzinskyi	1.68 2	1.88 2	1.02 2	1.35 2	0.79 2	0.41 2	0.37 2	0.86 2	0.61 2	0.82 2

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

Measurements
Antenna
Species	HL	HW	HLE	IOD	CL	A1	A2	A3	A4	A5
Stysiana acarinatis	1.68±0.09 (1.50–1.75) 6	1.84±0.11 (1.62–1.92) 6	0.95±0.06 (0.83–1.00) 6	1.22±0.07 (1.12–1.33) 6	0.84±0.05 (0.75–0.88) 6	0.44±0.03 (0.38–0.45) 6	0.31±0.05 (0.25–0.38) 6	0.79±0.05 (0.75–0.88) 6	0.62±0.05 (0.55–0.70) 6	0.87±0.04 (0.83–0.93) 6
Stysiana meridionalis	1.91 2	2.04 2	1.12 2	1.35 2	0.90 2	0.45 2	0.31 2	0.94 2	0.70 2	0.88 1
Stysiana pardidens	1.97±0.06 (1.88–2.00) 4	2.21±0.10 (2.08–2.30) 4	1.11±0.08 (1.00–1.18) 4	1.53±0.10 (1.45–1.68) 4	0.92±0.06 (0.88–1.00) 4	0.49±0.02 (0.45–0.50) 4	0.40±0.04 (0.38–0.45) 3	1.17±0.04 (1.12–1.20) 3	0.88 2	1.18 1
Stysiana tropicalis	1.66 2	1.91 2	1.02 2	1.23 2	0.93 2	0.45 2	0.34 2	1.00 2	0.69 2	0.93 1
Pedinonotus catarinensis	1.71±0.09 (1.57–1.86) 14	1.85±0.08 (1.67–1.95) 14	1.10±0.11 (1.00–1.38) 10	1.11±0.04 (1.00–1.14) 14	1.02±0.08 (0.90–1.10) 10	0.54±0.04 (0.50–0.60) 10	0.43±0.04 (0.36–0.51) 10	1.02±0.08 (0.90–1.14) 9	0.88±0.03 (0.84–0.90) 9	1.23±0.09 (1.11–1.35) 7

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

Measurements
Labium
Species	L1	L2	L3	L4	PL	PW	SL	SW	BL	BW
Hypatropis australis	0.52±0.04 (0.50–0.57) 3	0.83±0.07 (0.75–0.88) 3	0.57±0.06 (0.50–0.62) 3	0.45±0.00 (0.45–0.45) 3	1.93±0.06 (1.90–2.00) 3	4.02±0.20 (3.90–4.25) 3	2.70±0.46 (2.20–3.12) 3	2.22±0.29 (1.90–2.47) 3	8.29±0.62 (7.88–9.00) 3	4.21±0.14 (4.12–4.38) 3
Hypatropis inermis	0.52±0.03 (0.50–0.57) 9	0.81±0.09 (0.75–1.00) 9	0.54±0.07 (0.50–0.70) 9	0.43±0.03 (0.38–0.45) 9	1.83±0.15 (1.62–2.19) 14	4.37±0.22 (4.12–4.81) 14	3.06±0.15 (2.81–3.31) 14	2.77±0.15 (2.58–3.19) 14	9.35±0.87 (8.12–11.00) 9	4.43±0.16 (4.19–4.73) 14
Hypatropis rolstoni	0.73±0.03 (0.70–0.75) 3	1.23±0.13 (1.12–1.38) 3	0.78±0.09 (0.70–0.88) 3	0.62±0.06 (0.55–0.68) 3	2.23±0.14 (2.15–2.40) 3	4.70±0.43 (4.25–5.10) 3	3.29±0.29 (3.04–3.61) 3	2.81±0.20 (2.66–3.04) 3	9.17±0.72 (8.75–10.00) 3	4.58±0.44 (4.12–5.00) 3
Hypatropis similis	-	-	-	-	2.03 1	4.37 1	3.16 1	2.75 1	7.94 1	4.37 1
Hypatropis sternalis	0.32 1	0.55 1	0.55 1	0.38 1	1.78±0.05 (1.69–1.81) 5	4.14±0.15 (3.92–4.31) 5	3.23±0.13 (3.08–3.38) 5	2.48±0.07 (2.38–2.54) 5	8.75 1	4.30±0.27 (4.00–4.62) 5
Amauromelpia miri	0.68±0.06 (0.62–0.75) 3	1.09±0.03 (1.07–1.12) 3	0.78±0.09 (0.70–0.88) 3	0.61±0.03 (0.57–0.62) 3	1.77±0.13 (1.65–1.90) 3	4.13±0.32 (3.90–4.50) 3	2.53±0.40 (2.09–2.85) 3	2.34±0.40 (1.90–2.66) 3	7.75±0.66 (7.25–8.50) 3	4.25±0.45 (3.75–4.62) 3
Amauromelpia ussu	0.86±0.05 (0.75–0.93) 8	1.45±0.09 (1.38–1.62) 8	1.10±0.05 (1.00–1.12) 8	0.85±0.08 (0.75–1.00) 8	2.27±0.08 (2.15–2.40) 8	5.31±0.27 (5.00–5.75) 8	3.31±0.19 (2.96–3.53) 8	3.16±0.25 (2.66–3.42) 8	9.38±0.46 (8.75–10.00) 8	5.38±0.43 (5.00–6.25) 8
Luridocimex wygodzinskyi	0.41 2	0.62 2	0.52 2	0.41 2	1.64 2	3.37 2	2.71 2	2.13 2	7.79 2	3.64 2
Stysiana acarinatis	0.65±0.07 (0.55–0.75) 6	0.94±0.08 (0.80–1.00) 6	0.55±0.03 (0.50–0.57) 6	0.45±0.05 (0.38–0.50) 6	1.73±0.15 (1.50–1.90) 6	4.04±0.28 (3.50–4.25) 6	2.63±0.23 (2.20–2.85) 6	2.35±0.18 (2.01–2.47) 6	8.10±0.70 (6.88–8.50) 5	4.15±0.26 (3.75–4.38) 5

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

Measurements
Labium
Species	L1	L2	L3	L4	PL	PW	SL	SW	BL	BW
Stysiana meridionalis	0.54 2	0.78 2	0.50 2	0.45 2	1.98 2	4.20 2	3.06 2	2.56 2	9.56 2	4.50 2
Stysiana pardidens	0. 7 1±0. 0 6 (0.62–0.75) 4	1. 1 4±0. 0 7 (1.07–1.25) 4	0.6 6±0.0 7 (0.55–0.70) 4	0.5 1±0.0 2 (0.50–0.55) 4	2. 2 5± 0. 1 8 (2.00–2.40) 4	4.5 9±0.2 4 (4.25–4.75) 4	3.1 6±0.2 4 (2.81–3.34) 4	2.6 9±0.1 7 (2.47–2.85) 4	9. 7 5 ± 0. 8 7 (8.50–10.50) 4	4. 7 8 ±0. 3 0 (4.38–5.00) 4
Stysiana tropicalis	0.57 2	1.02 2	0.54 2	0.44 2	1.88 2	4.00 2	2.81 2	2.43 2	8.31 2	4.38 2
Pedinonotus catarinensis	0. 7 1±0. 0 7 (0.60–0.80) 10	1. 2 2±0. 1 2 (1.11–1.50) 8	0.9 2±0.0 6 (0.84–1.00) 8	0.7 6±0.0 3 (0.69–0.80) 8	1. 9 0± 0. 0 9 (1.76–2.05) 14	4.4 7±0.1 8 (4.14–4.71) 14	3.1 4±0.1 6 (2.81–3.48) 14	2.7 2±0.1 5 (2.43–2.86) 14	8. 0 2 ± 0. 5 8 (7.3 0–9. 0 0) 10	4. 5 8 ±0. 2 2 (4.14–4.95) 14

Additional material examined. Prolatucoris mandibulatus Barros, Brugnera & Grazia, 2020 : Holotype ♀ , BRAZIL , [ Rio Grande do Sul ], [Caxias do Sul], Vila Oliva , 11.I.1961 , (7429), Pe. Buck leg. ( MCNZ ) <illustrated specimen >. Paratypes : same date as holotype , ♀ ( UFRG ) <illustrated specimen >; ♂ , BRAZIL , [ Rio Grande do Sul ], São Francisco de Paula , ‘ Barragem P. Inferno’ , 19.XI.1997 , Col. MCN 53.354, E.H Buckup leg. ( UFRG ) <illustrated specimen >.