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

publication ID

http://dx.doi.org/10.11646/zootaxa.4034.3.2

publication LSID

lsid:zoobank.org:pub:0A762FED-A91A-4589-8991-BD629EDF1CE5

persistent identifier

http://treatment.plazi.org/id/03A587DF-D71C-FF99-8DDB-FB5982FEF874

treatment provided by

Plazi

scientific name

Pentatoma bifida
status

 

Key to species of bifida   group of Ascra  

1. Arms of the anterior bifurcation of metasternal process flatted dorsoventrally ( Figs. 31, 32 View FIGURES 31 – 38 ); corium almost transparent; legs with small black macules at base of setae ( Fig. 63 View FIGURES 59 – 65 )...................................................... abdita  

- Arms of the anterior bifurcation of metasternal process subcylindrical or flattened laterally ( Figs. 1 −2 View FIGURES 1 − 8 , 9−10 View FIGURES 9 – 16 , 25−26 View FIGURES 25 – 30 , 39−40 View FIGURES 39 – 45 , 46− 47 View FIGURES 46 – 51 ); corium translucent brown; legs not maculate ( Figs. 59 −62, 64− 65 View FIGURES 59 – 65 )....................................... 2

2. Margin of body red ( Fig. 55 View FIGURES 52 – 58 ); ventral surface contrastingly brown and yellow ( Fig. 62 View FIGURES 59 – 65 ); bottom of medial excavation of ventral rim concave and delimited by two short carina ( Fig. 29 View FIGURES 25 – 30 ); gonocoxites 8 with dorsal margin bearing a dentiform small projection close to gonocoxites 9 ( Fig. 27 View FIGURES 25 – 30 )................................................................. petersii  

- Margin of body yellow or concolorous ( Figs. 52 −54, 57− 58 View FIGURES 52 – 58 ); ventral surface greenish yellow to red with color more uniform ( Figs. 59 −61, 64− 65 View FIGURES 59 – 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 View FIGURES 1 − 8 , 12 View FIGURES 9 – 16 , 20 View FIGURES 17 – 24 , 34 View FIGURES 31 – 38 , 41 View FIGURES 39 – 45 , 48 View FIGURES 46 – 51 )........................................... 3

3. Ventral surface of body red ( Fig. 61 View FIGURES 59 – 65 ); connexivum red; without cordiform spot on apex of scutellum ( Fig. 54 View FIGURES 52 – 58 ); parameres narrow without developed lateral process ( Fig. 27 View FIGURES 25 – 30 )..................................................... championi  

- Ventral surface of body greenish yellow to brown or variegate ( Figs. 59 −60, 64− 65 View FIGURES 59 – 65 ); connexivum green to brown; apex of scutellum with a cordiform or V-shaped yellow spot ( Figs. 52, 53, 57, 58 View FIGURES 52 – 58 ); parameres with developed lateral process ( Fig. 7 View FIGURES 1 − 8 , 15 View FIGURES 9 – 16 , 23 View FIGURES 17 – 24 , 44 View FIGURES 39 – 45 , 51 View FIGURES 46 – 51 )....................................................................................... 4

4. Body dark brown greenish; cordiform spot large ( Fig. 53 View FIGURES 52 – 58 ); expansion of ventral rim pyramidal ( Figs. 14, 15 View FIGURES 9 – 16 ); parameres bifurcated at base ( Fig. 15 View FIGURES 9 – 16 )........................................................................... cordifera  

- Body green to light brown; cordiform spot small or V −shaped ( Figs. 52, 57− 58 View FIGURES 52 – 58 ); expansion of ventral rim rounded ( Figs. 6 −7 View FIGURES 1 − 8 , 50−51 View FIGURES 46 – 51 , 43− 44 View FIGURES 39 – 45 ); parameres lanceolate or expanded distally ( Figs. 7 View FIGURES 1 − 8 , 30 View FIGURES 25 – 30 , 51 View FIGURES 46 – 51 )....................................... 5

5. Margins of scutellum concolorous with disc ( Fig. 52 View FIGURES 52 – 58 ); distal part of parameres lanceolate ( Fig. 7 View FIGURES 1 − 8 ).................. bifida  

- Anterior or lateral margins of scutellum yellow ( Figs. 57−58 View FIGURES 52 – 58 ); distal part of parameres expanded ( Figs. 44 View FIGURES 39 – 45 , 51 View FIGURES 46 – 51 ).......... 6

6. Scutellum with a wide yellow stripe on lateral margins, apex punctate ( Fig. 58 View FIGURES 52 – 58 ); ventral rim with a narrow medial excavation hiding parameres in ventral view ( Fig. 50 View FIGURES 46 – 51 )....................................................... vluteum   n. sp.

- Scutellum with a narrow yellow stripe on anterior margin, apex not punctate ( Fig. 57 View FIGURES 52 – 58 ); ventral rim widely excavated medially leaving parameres partially visible in ventral view ( Fig. 43 View FIGURES 39 – 45 )................................... flavoscutellata   n. sp.