Pentatoma bifida

Santos, Bianca Tamires Silva Dos, Silva, Valeria Juliete Da & Fernandes, Jose Antonio Marin, 2015, Revision of Ascra with proposition of the bifida species group and description of two new species (Hemiptera: Pentatomidae: Edessinae), Zootaxa 4034 (3), pp. 445-470 : 448

Key to species of bifida group of Ascra

1. Arms of the anterior bifurcation of metasternal process flatted dorsoventrally ( Figs. 31, 32 ); corium almost transparent; legs with small black macules at base of setae ( Fig. 63 )...................................................... abdita

- Arms of the anterior bifurcation of metasternal process subcylindrical or flattened laterally ( Figs. 1−2 , 9−10 , 25−26 , 39−40 , 46−47 ); corium translucent brown; legs not maculate ( Figs. 59−62, 64−65 )....................................... 2

2. Margin of body red ( Fig. 55 ); ventral surface contrastingly brown and yellow ( Fig. 62 ); bottom of medial excavation of ventral rim concave and delimited by two short carina ( Fig. 29 ); gonocoxites 8 with dorsal margin bearing a dentiform small projection close to gonocoxites 9 ( Fig. 27 )................................................................. petersii

- Margin of body yellow or concolorous ( Figs. 52−54, 57−58 ); ventral surface greenish yellow to red with color more uniform ( Figs. 59−61, 64−65 ); bottom of medial excavation of ventral rim concave or flat without carina or with only one; gonocoxites 8 with distal margin rounded to acuminate ( Figs. 4 , 12 , 20 , 34 , 41 , 48 )........................................... 3

3. Ventral surface of body red ( Fig. 61 ); connexivum red; without cordiform spot on apex of scutellum ( Fig. 54 ); parameres narrow without developed lateral process ( Fig. 27 )..................................................... championi

- Ventral surface of body greenish yellow to brown or variegate ( Figs. 59−60, 64−65 ); connexivum green to brown; apex of scutellum with a cordiform or V-shaped yellow spot ( Figs. 52, 53, 57, 58 ); parameres with developed lateral process ( Fig. 7 , 15 , 23 , 44 , 51 )....................................................................................... 4

4. Body dark brown greenish; cordiform spot large ( Fig. 53 ); expansion of ventral rim pyramidal ( Figs. 14, 15 ); parameres bifurcated at base ( Fig. 15 )........................................................................... cordifera

- Body green to light brown; cordiform spot small or V −shaped ( Figs. 52, 57−58 ); expansion of ventral rim rounded ( Figs. 6−7 , 50−51 , 43−44 ); parameres lanceolate or expanded distally ( Figs. 7 , 30 , 51 )....................................... 5

5. Margins of scutellum concolorous with disc ( Fig. 52 ); distal part of parameres lanceolate ( Fig. 7 ).................. bifida

- Anterior or lateral margins of scutellum yellow ( Figs. 57−58 ); distal part of parameres expanded ( Figs. 44 , 51 ).......... 6

6. Scutellum with a wide yellow stripe on lateral margins, apex punctate ( Fig. 58 ); ventral rim with a narrow medial excavation hiding parameres in ventral view ( Fig. 50 )....................................................... vluteum n. sp.

- Scutellum with a narrow yellow stripe on anterior margin, apex not punctate ( Fig. 57 ); ventral rim widely excavated medially leaving parameres partially visible in ventral view ( Fig. 43 )................................... flavoscutellata n. sp.

Figures

FIGURES 31 – 38. Ascra abdita Distant, 1890. 31 – 32 Metasternal process; 31 — ventral view; 32 — lateral view. 33 — Female, genital internal. 34 — Female, genital plates. 35 – 37 Male, pygophore; 35 — dorsal view; 36 — ventral view; 37 — posterior view. 38 — Phallus. (Scale = 1 mm).

FIGURES 59 – 65. Ventral view of the species of Ascra. 59 — A. bifida; 60 — A. cordifera; 61 — A. championi; 62 — A. petersii; 63 — A. abdita; 64 — A. flavoscutellata; 65 — A. vluteum. (Scale = 5 mm).

FIGURES 1 − 8. Ascra bifida (Say, 1832). 1 – 2 Metasternal process; 1 — ventral view; 2 — lateral view. 3 — Female, genital internal. 4 — Female, genital plates. 5 − 7 Male, pygophore; 5 — dorsal view; 6 — ventral view; 7 — posterior view. 8 — Phallus. (aaf—anterior anular flanges; ch— chitinellipsen; cs— capsula seminalis; dre— ductu receptaculi; dr—dorsal rim; gc 8 — gonocoxites 8; gc 9 — gonocoxite 9; la 8, laterotergites 8; la 9 — laterotergites 9; pa—paramere; paf—posterior anular flanges; pc—processes of capsula seminalis; pha— Phallus; pi— pars intermedialis; pla—posterolateral angle; pph—process of Phallus; pvr—projections ventral rim; sp—superior process; tiv—thickening of vaginal intima; vs—vesica; vr—ventral rim; VII—tergite VII; X (female) — abdominal segment X; X (male) — Proctiger. (Scale = 1 mm).

FIGURES 9 – 16. Ascra cordifera Walker, 1868. 9 – 10 Metasternal process; 9 — ventral view; 10 — lateral view. 11 — Female, genital internal. 12 — Female, genital plates. 13 – 15 Male, pygophore; 13 — dorsal view; 14 — ventral view; 15 — posterior view. 16 – Phallus. (Scale = 1 mm).

FIGURES 25 – 30. Ascra petersii Distant, 1881. 25 – 26 Metasternal process; 25 — ventral view; 26 — lateral view. 27 — Female, genital plates. 28 – 30 Male, pygophore; 28 — dorsal view; 29 — ventral view; 30 — posterior view. (Scale = 1 mm).

FIGURES 39 – 45. Ascra flavoscutellata n. sp. 39 – 40 Metasternal process; 39 — ventral view; 40 — lateral view. 41 — Female, genital plates. 42 – 44 Male, pygophore; 42 — dorsal view; 43 — ventral view; 44 — posterior view. 45 — Phallus. (Scale = 1 mm).

FIGURES 46 – 51. Ascra vluteum n. sp. 46 – 47 Metasternal process; 46 — ventral view; 47 — lateral view. 48 — Female, genital plates. 49 – 51 Male, pygophore; 49 — dorsal view; 50 — ventral view; 51 — posterior view. (Scale = 1 mm).

FIGURES 52 – 58. Dorsal view of the species of Ascra. 52 — A. bifida; 53 — A. cordifera; 54 — A. championi; 55 — A. petersii; 56 — A. abdita; 57 — A. flavoscutellata; 58 — A. vluteum. (Scale = 5 mm).

FIGURES 17 – 24. Ascra championi Distant, 1881. 17 – 18 Metasternal process; 17 — ventral view; 18 — lateral view. 19 — Female, genital internal. 20 — Female, genital plates. 21 – 23 Male, pygophore; 21 — dorsal view; 22 — ventral view; 23 — posterior view. 24 − Phallus. (Scale = 1 mm).