Braunus sciocorinus ( Walker, 1867 )

Barão, Kim Ribeiro, Garbelotto, Thereza De Almeida, Campos, Luiz Alexandre & Grazia, Jocelia, 2016, Unusual looking pentatomids: reassessing the taxonomy of Braunus Distant and Lojus McDonald (Hemiptera: Heteroptera: Pentatomidae), Zootaxa 4078 (1), pp. 168-186 : 171-172

Braunus sciocorinus ( Walker, 1867)

( Figures 1–3 , 12–35 , 78–79 )

Coriplatus sciocorinus Walker, 1867: 197 –198.

Braunus sciocorinus: Distant, 1899: 423 ; Kirkaldy, 1909: 220.

Material examined. Lectotype ♀, [ ECUADOR, Napo], Archidona ( BMNH), here designated. Paralectotype ♀ [ ECUADOR, Napo], Archidona ( BMNH), here designated. 1♀, ECUADOR, Pichincha, Bellavista Cloud Forest Reserve, 0°00’55”N 78°40’49”W, 2200–2300 m, tropical cloud forest, M.V. light, 24–28.VII.2007, CPDT Gillet leg. ( BMNH) ; 3♂, 4♀, ECUADOR, Napo, Yanayacu Biological Station , 2144 m, 0.60°S 77.89°W, 24–30.XI.2009, D. Forero leg. [EC09_L1] (1♂ 1♀ UCRC; 1♂ 1♀ USNM; 1♂ 2 ♀ MNRJ) .

Diagnosis. Head dark brown dorsally ( Figs 12–13 ). Anterior angles of pronotum each with a stout, spine-like tubercle, surpassing lateral margins of each compound eye; anterolateral margins each with 1–2 small tubercles; each humeral angle bilobed apically, anterior lobe with 2–3 processes; posterior margin weakly concave ( Figs 1–3 ). Apex of hemelytral radial vein calloused; corium ivory, reaching anterior margin of abdominal segment VI; membrane reaching anterior margin of abdominal segment VIII on females ( Fig. 15 ) and surpassing abdominal apex on males ( Fig. 14 ). Male genitalia: posterolateral angles of pygophore rounded; inferior layer of ventral rim weakly emarginate, with a bilobed projection medially; parameres acute apically ( Figs 18–24 ). Female genitalia: posterior margin of each gonocoxite 8 rectilinear; posterior margin of each laterotergite 8 acute; laterotergites 9 digitiform ( Figs 32–35 ).

Male genitalia. Dorsal rim concave with 1+1 trapezoidal projections laterally to segment X ( Figs 18–19 ; dr). Inferior layer of ventral rim projected posteriorly, bilobed apically ( Figs 20–23 ; vr). Superior layer of ventral rim depressed medially ( Figs 18–21 ; sl). Posterolateral angles rounded, bearing setae ( Figs 18–19 ; pa). Abdominal segment X rectangular ( Figs 18–19, 25 ; X). Parameres F-shaped; head of paramere blade-like, acute apically; in lateral view, paramere with a rounded, median process bearing setae ( Figs 18–21, 24 ; par). Phallus: limit between sclerotized and membranous area of phallotheca sinuous ( Figs 28–29 ; ph). Ventral conjunctival processes curved toward vesica apically, its dorsal surface concave ( Figs 26–31 ; v cp). Laterodorsal conjunctival processes each digitiform, membranous, shorter than vesica ( Figs 28–29 ; lcp). Vesica cup-like, projected dorsally; dorsal margin strongly sclerotized and emarginated medially ( Figs 28–31 ; v). Ductus seminis distalis curved ventrally, originating from central part of vesica ( Figs 30–31 ; ds). Process of gonopore bilobed apically.

Female genitalia. Gonocoxites 8 longer than wide; each sutural margin parallel basally, sinuous and divergent apically; sutural margins setose, setae covering gonapophyses 8; posterior margins rectilinear ( Figs 32–33 ; gc8). Gonapophyses 8 visible, subtriangular, carinated medially ( Figs 32–33 ; g8). Laterotergites 8 triangular, each longer than wide; posterior margin acute, surpassing tergite 8 ( Figs 32–33 ; la8). Gonocoxites 9 trapezoidal, each with 1+1 tufts of long setae on its disc ( Figs 32–35 ; gc9). Laterotergites 9 depressed basally; lateral margins concave; apices rounded, each barely surpassing tergite 8 ( Figs 32–33 ; la9). Segment X rectangular ( Figs 32–33 ; X). Gonapophyses 9 with 1+1 lateral sclerotized areas placed along with chitinellipsen ( Figs 34–35 ; ch) and 1+1 lateral folds partially covering chitinellipsen ( Figs 34–35 ; lf). Chitinellipsen elliptical ( Figs 34–35 ; ch). Thickening of vaginal intima circular with an anterior subtriangular projection ( Figs 34–35 ; tvi). Median duct of vesicular area sinuous at base ( Figs 34–35 ; md). Capsula seminalis with three finger-like processes ( Figs 34–35 ; cs).

Measurements. Total length, 9.6±0.42 (8.4–11.5); head length, 2.2 ± 0.05 (2.1–2.5); head width, 1.6 ± 0.04 (1.5–1.8); length of pronotum, 1.9 ± 0.06 (1.8–2.3); width of pronotum at base, 4.3 ± 0.16 (3.7–5.1); maximum width of pronotum at humeral angle, 5.0 ± 0.18 (4.5–6.0); length of scutellum, 3.0 ± 0.11 (2.6–3.5); width of scutellum, 2.8 ± 0.10 (2.5–3.3); width of abdomen across third segment, 5.5 ± 0.13 (5.0–5.8).

Distribution. Ecuador (Napo, Pichincha) ( Figs 78–79 ).

Figures

FIGURES 1 – 11. Schematic drawings of pronotum of Braunus Distant, 1899 in dorsal view. 1 – 3. B. sciocorinus (Walker, 1867); 4. B. machadoi Barão & Garbelotto sp. nov.; 5. B. gibbus Garbelotto & Barão sp. nov.; 6. B. prionotus Barão & Garbelotto sp. nov.; 7. B. asperus (McDonald, 1982) comb. nov.; 8. B. ateuchus (Brailovski & Rolston, 1986) comb. nov.; 9. B. bordoni (Thomas, 1997) comb. nov.; 10. B. brettlizorum (Thomas, 1997) comb. nov.; 11. B. ocellatus (Thomas, 2001) comb. nov. Scale bars = 1 mm.

FIGURES 12 – 17. Braunus sciocorinus (Walker, 1867), general morphology. 12 – 13. habitus; 12. dorsal view; 13. ventral view; 14. male forewing; 15. female forewing; 16. male hindwing; 17. external scent efferent system, inset showing ostiolar area. Abreviattions: ev = evaporatorium; ms = mesopleura; mt = metapleura; o = ostiole. Scale bars: 11 – 12 = 2 mm; 13 – 16 = 0.5 mm.

FIGURES 18 – 31. Braunus sciocorinus (Walker, 1867), male genitalia. 18 – 23, pygophore; 18 – 19. dorsal view; 20 – 21. posterior view; 22 – 23. ventral view; 24. right paramere, lateral view; 25. abdominal segment X, dorsal view; 26 – 31. phallus; 26 – 27. dorsal view; 28 – 29. lateral view; 30 – 31. ventral view. Abbreviations: dr = dorsal rim; ds = ductus seminis distalis; lcp = laterodorsal conjunctival process; pa = posterolateral angle; par = paramere; ph = phallotheca; sl = mid depression of superior layer of ventral rim; ts = thecal shield; v = vesica; vcp = ventral conjunctival process; vr = ventral rim; X = abdominal segment X. Scale bars: 17 – 22 = 0.5; 23 – 30 = 0.25; inset of Fig. 17 = 0.2 mm.

FIGURES 32 – 35. Braunus sciocorinus (Walker, 1867), female genitalia. 32 – 33. genital plates, ventroposterior view; 34 – 35. female receptaculum seminis and ausenwand, ventral view. Abbreviations: ch = chitinellipsen; cs = capsula seminalis; gc 8 = gonocoxites 8; gc 9 = gonocoxites 9; g 8 = gonapophyses 8; g 9 = gonapophyses 9; la 8 = laterotergites 8; la 9 = laterotergites 9; lf = lateral folding of gonapophyses 9; md = median duct of vesicular area; pi = pars intermedialis; tvi = thickning of vaginal intima; X = abdominal segment X. Scale bars = 1 mm.

FIGURES 78 – 82. Distribution of species of Braunus Distant, 1899 and localities of some collection events. 78. map of localities; 79. a collection locality of B. sciocorinus (Walker, 1867) and B. ocellatus (Thomas, 2001) comb. nov. (ECUADOR, Napo, Yanayacu Biological Station; photo by D. Forero); 80. type locality of B. machadoi Barão & Garbelotto sp. nov. (PERU, Cuzco, Wayqecha Research Center; photo by C. Weirauch); 81 – 82. a collection locality of B. ocellatus (Thomas, 2001) comb. nov. (ECUADOR, Napo, 1.3 km SW of Baeza; photos by J. Skuhrovec).