Vilga Stal 1860
Creators: name: Costa, Wanessa Da Silva
name: Barcellos, Aline
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Vilga

description: Key to species of Vilga (adapted from Dolling, 1977)
1 Pronotum deeply emarginate posteriorly (Trinidad, Brazil, Paraguay, Bolivia, northern Argentina).... westwoodi (Kolenati)
- Pronotum shallowly emarginate posteriorly................................................................ 2
2 Abdominal sternites bearing spines at postero-lateral angles which are about as long as width of connexivum; pronotum very spinose. (Guatemala, French Guiana, Brazil, Paraguay)............................................. dallasi Distant
- Abdominal sternites bearing spines at most half as long as width of connexivum; pronotum less spinose................ 3
3 Posterior femur with a single, small, subapical spine beneath. (Peru, Chile, Argentina).............................. 4
- Posterior femur beneath with two major subapical spines and a group of three or four spine-like tubercules between distal spine and apex of femur. (Southern U.S.A. to southern Brazil)....................................................... 6
4 Length of antennal segment I at most 0.56 times width of head inclusive of eyes. (Peru)................ peruviana Dolling
- Length of antennal segment I at least 0.65 times width of head inclusive of eyes.................................... 5
5 Apex of corium at rest reaching level of middle of laterotergite V, apex of membrane not reaching beyond posterior margin of tergite VII. (Chile, Argentina, Brazil).......................................................... chilensis (Stein)
- Apex of corium reaching posteriorly to base of laterotergite VI, membrane projecting beyond posterior tip of body. (Argentina)................................................................................... penningtoni Bergroth
6 Lateral margins of abdominal sternites almost smooth......................................................... 7
- Lateral margins of abdominal sternites distinctly granulate or tuberculate....................................... 10
7 Posterolateral spines of pronotum short, width of pronotum across tips of spines about 1.97 times width of head inclusive of eyes. (Brazil)........................................................................................ 8
- Posterolateral spines of pronotum long, widely diverging, width of pronotum across tips of spines at least 2.09 times width of head including eyes.................................................................................... 9
8 Pubescence including some longer and more erect setae; antennal segment II more than half the width of segment I (Brazil)........................................................................................ antennata sp. nov.
- Pubescence uniform in height; antennal segment II less than half the width of segment I (Brazil)........ brasiliensis Dolling
9 Antennal segment I without tubercles, though with some large granules present. (Panama, Guyana)....... divaricata Distant
- Antennal segment I externally with a row of projecting tubercles. (Brazil).......................... sanctipauli Dolling
10 Antennal segments I–III clothed with suberect hairs longer than width of segment II, disc of hemelytral membrane with numer- ous crossveins; sometimes brachypterous. (Southern U.S.A. to El Salvador).......................... mexicana Distant
- Antennal segments I–III clothed with hairs shorter than width of segment II; disc of membrane without cross-veins; insect never brachypterous................................................................................. 11
11 Pronotum with posterolateral spines directed obliquely forwards. (Brazil).............................. obliqua Dolling
- Pronotum with posterolateral spines directed laterally....................................................... 12
12 Lateral margins of abdominal sternites V–VII bearing granules no longer than broad. (Costa Rica, Panama, Aruba, Guyana, Colombia, Brazil)....................................................................... dissimilis Distant
- Lateral margins of abdominal sternites V–VII bearing at least some tubercles longer than broad...................... 13
13 Antennal segment I about equal in length to width of head across antennifers. (Scutellum as long as its own basal width). (Bra- zil)................................................................................ serrulata Montandon
- Antennal segment I longer than head width across antennifers................................................ 14
14 Antennal segment I about equal in length to width of head inclusive of eyes; scutellum as long as its own basal width. (Brazil)......................................................................................... grisea Dolling
- Antennal segment I shorter than width of head including eyes; scutellum distinctly longer than its own basal width. (Brazil)...................................................................................... grisescens Dolling
description: Published as part of Costa, Wanessa Da Silva & Barcellos, Aline, 2017, Contributions to the taxonomy of Vilga Stål (Hemiptera, Coreidae, Pseudophloeinae) with the description of a new species from southern Brazil in Zootaxa 4353 (1), DOI: 10.11646/zootaxa.4353.1.11, http://zenodo.org/record/1064452