Poriptus luctans Stål, 1861

Barcellos, Aline & Grazia, Jocelia, 2008, Revision of the genus Poriptus Stål (Hemiptera: Heteroptera: Pentatomidae: Pentatominae), Zootaxa 1821, pp. 25-36 : 30-33

Poriptus luctans Stål, 1861

( Figs. 5–7 , 12 , 17–19 , 24 , 27 )

Type locality: Amazon region, Brazil.

Poriptus luctans Stål, 1861: 143 ; Lethierry & Severin 1893: 125 (cat.); Kirkaldy 1909: 62 (cat.).

Description. Narrowly oval, light brown to ochraceous specimens. Antennal segment III not surpassing apex of head. Humeri directed anterolaterally or anteriorly, at acute angle with anterolateral margins of pronotum. Pronotum with pale, calloused, longitudinal stripe, less punctured than remaining area of disk.

Male genitalia (figs. 5–7, 12, 17–19). Parameres very wide distally, bordered in black (figs. 3, 12). Lateral processes of dorsal rim almost as broad distally as parameres, also bordered in black (figs. 5, 6). Proctiger trapezoidal, wider basally. Ventral rim trisinuate, median third markedly convex (fig. 7).

Measurements (n=20). Total length 9.89 (9.19–10.86)± 0.36; head length 2.55 (2.30–2.94)± 0.14, width 1.48 (1.40–1.60)± 0.06; eye width 0.30(0.27–0.35)± 0.02; interocular distance 0.88(0.82–0.96)± 0.03; anteocular length 1.77(1.62–2.01)± 0.09; length of antennal segments: I -0.35 (0.31–0.39)± 0.02; II - 0.49 (0.39– 0.60)±0.05; III - 0.67 (0.59–0.74)±0.04; IV - 0.68 (0.62–0.78)± 0.04; V- 0.74 (0.70–0.78)±0.02; pronotal length 1.72 (1.56–1.91)± 0.08, width 3.77 (3.45–4.52)± 0.28; scutellar length 2.70 (2.50–3.08)± 0.15, width 1.97 (1.72–2.18)± 0.10; abdominal width 3.38 (3.04–3.67)± 0.17; corium length 3.84 (3.59–4.33)± 0.19.

Female genitalia (figs. 24, 27). Posterior borders of gonocoxites 8 convex; sutural borders parallel. Laterotergites 9 reaching about to apical third of laterotergites 8 (fig. 24). Gonapophyses 9 without secondary thickenings. Capsula seminalis without process (fig. 27).

Measurements (n=20). Total length 11.00 (8.93–12.69)±0.88; head length 2.72 (2.38–3.28)±0.22, width 1.56 (1.37–1.68)±0.08; eye width 0.31 (0.27–0.35)±0.03; interocular distance 0.94 (0.82–1.03)±0.05; anteocular length 1.92 (1.64–2.22)±0.16; length of antennal segments: I - 0.37 (0.31–0.41)±0.02; II - 0.54 (0.43– 0.66)±0.06; III - 0.68 (0.59–0.78)±0.06; IV - 0.71 (0.60–0.78)±0.05; V - 0.78 (0.70–0.90)±0.04; pronotal length 1.89 (1.52–2.15)±0.17, width 4.09 (3.30–4.88)±0.39; scutellar length 3.05 (2.54–3.53)±0.27, width 2.19 (1.76–2.42)±0.18; abdominal width 3.81 (3.32–4.21)±0.24; corium length 4.36 (3.71–4.74)±0.29.

Type material examined. Holotype ♀. Labels: 1) Stevens; 20 Type; 3) Amazon ; 4) Typus; 5) Naturhistoriska Riksmuseet Stockholm Loan no 918/06 ( NHRS).

Material examined. COLOMBIA, Meta: Villavicencio, 1–12.VI.1970, Fany Ilanos col., ( ICN, He 00334 ); Pto. Lape Vda , La Blasa, Hda. Mozambique, 1 ♂, 28.VII.83, A. Beceria col., 230m, ( ICN, He 00341 ); Restrepo, Km 8 via Villavicencio, 1 ♀, s/ data, Beatriz Gonzalez col., ( ICN, He 00337 ); SURINAM, Paramaribo, 3 ♂, 4 ♀, 16–18.VII.1975, D. Engleman col. ( AMNH); idem, 18 Km S. Paramaribo, 1 ♀, 22– 30.VII.1975; Witagron , 1 ♀, 24.VII.1975, Engleman col.( AMNH); BRAZIL, Amazonas: Fonte Boa , 1 ♀, IX.1975, F.M. Oliveira col. ( AMNH); Rio Negro, Tapuruquara , 1 ♀, 20–25.XI.1962, J. Bechiné col. ( MZSP); Pará: Porto Trombetas , 2 ♂, 07.IV.1978, Grazia & Pires col. ( DZRS); Rio Grande do Norte: Natal, 1 ♀, III.1952, M. Alvarenga col. ( FIOC); Mato Grosso: 10o25’S, 59o28’W, 6 ♂, 4 ♀, 1722. III. 1977, 300m, D. Engleman col. ( AMNH); Mato Grosso do Sul: Miranda , Pousada Caiman , 1 ♀, 17.I.1992, M.V. de Souza col. ( DZRS); idem, 1 ♂, 15.I.1992, idem ( FIOC); Minas Gerais: Santa Barbara , Serra do Caraça , 1 ♀, II.1971, F.M. Oliveira col., 1450 m, ( AMNH); Passos , 1 ♀, IV.1963, C. & T. Elias col. ( DZUP); Pratápolis , 1 ♀, IV.1961, C. Elias col. ( DZUP); Passa Quatro , margens Rio das Pedras, 1 ♂, 1 ♀, VI.1903, E.-R. Wagner col., 1000 m ( MNHN); Rio de Janeiro: Estrada Rio-São Paulo, Km 39, 1 ♀, II.1955, S. Oliveira col.; São Paulo: no locality, 1 ♂, 1 ♀, 27.X.1963, V.N. Alin col. ( AMNH); idem, 1 ♂, XI.1973, F. M. Oliveira col. ( AMNH); Onda Verde, Fazenda São João , 1 ♀, I.1946, F. Lane col. ( FIOC); Paraná: Curitiba, 1 ♂, 2 ♀, 30.IV.1961, S. Laroca col., 900m ( DZUP); idem, 2 ♂, 16.II.1966, C.Ext. D.Z.U.F.P ( DZUP); Rio Papagaios, 1 ♀, 20.XI.1966, Moure, Mielke, Graf & Azevedo col. ( DZUP); Rio Grande do Sul: Santa Maria, 7 ♂, 3 ♀, 13.I.1985, D. Link col. ( DZRS); idem, 8 ♂, 6 ♀, II.1987, idem ( DZRS); Porto Alegre, 1 ♀, no date, no collector, 224; col MRCN 0 0 3162 ( MCNZ); BOLIVIA, Songo , 1 ♀, no date, no collector, ( AMNH); Santa Cruz : 10 mi. W. Portachuelo, 2 ♀, 19.IV.1978, G. B. Marshall col. ( AMNH); ARGENTINA, Manantiales , 1 ♂, XI.1946, T. de Apostol col. ( IMLA); Corrientes: Santo Tomé, 1 ♀, I.1929, no collector ( MACN).

Comments. Poriptus luctans is widely distributed throughout South America, in the Amazonian, Chacoan, and Parana subregions ( Morrone 2006). Although the genital morphology is quite constant, this species varies remarkably on humeral development. Specimens from southern Brazil and Argentina have much longer and sharper humeri, which are as long as the anterolateral margin. In northern specimens, humeri are about half the length of the anterolateral margin.

Figures

FIGURES 2 – 10. Pygophore, respectively dorsal, caudal, and ventral views: 2 – 4, Poriptus filius; 5 – 7, Poriptus luctans; 8 – 10, Poriptus tobago sp. nov. (dr = dorsal rim; lp = lateral process of dorsal rim; pa = paramere; vr = ventral rim, X = proctiger). Scale = 1 mm.

FIGURES 11 – 13. Left paramere, outer lateral view: 11, Poriptus filius; 12, Poriptus luctans; 13, Poriptus tobago sp. nov. Scale = 0, 5 mm.

FIGURES 14 – 22. Phallus, respectively dorsal, lateral and ventral views: 14 – 16, Poriptus filius; 17 – 19, Poriptus luctans; 20 – 22, Poriptus tobago sp. nov. (bp = basal plate; dc = dorsal connective; dsd = ductus seminis distalis; me = membranblase; pc = processus capitati; pcj = process of conjunctiva; ph = phallotheca; v = vesica). Scale = 0, 5 mm.

FIGURES 23 – 25. Genital plates, ventral view: 23, Poriptus filius; 24, Poriptus luctans; 25, Poriptus tobago sp. nov. (gc 8 = gonocoxites 8; gc 9 = gonocoxites 9; la 8 = laterotergites 8; la 9 = laterotergites 9; VII = seventh abdominal segment). Scale = 1 mm.

FIGURES 26 – 28. Receptaculum seminis, ventral view: 26, Poriptus filius; 27, Poriptus luctans; 28, Poriptus tobago sp. nov. (aac = anterior annular crest; ch = chitinellipsen; cs = capsula seminalis; dr = ductus receptaculi; gc 9 = gonocoxites 9; la 9 = laterotergites 9; pac = posterior annular crest; pi = pars intermedialis; st = secondary thickening of gonapophyses 9; tvi = thickening of vaginal intima; X = proctiger). Scale = 0.5 mm.