Exogonia Melichar 1926
Creators: name: Mauro-Barr, T. T.
name: Carvalho, R. A.
name: Felix, M.
name: Mejdalani, G.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Exogonia

description: Key to species of Exogonia   
1. Dorsum with pair of pale yellow stripes extending from crown to apical cells of forewings (Figs 28, 29, 66, 68).... 2  
- Dorsum without such stripes......................................................................................................................................... 3  
 2. Crown with stripes extending anteriorly beyond frontogenal sutures and without maculae on median portion (Fig. 29); forewings with distinct longitudinal pale stripe on costal area (Fig. 28); subgenital plates gradually narrowed toward apex (Fig. 31); styles without preapical lobe on inner margin (Fig. 32); connective with narrow stalk (Fig. 32); aedeagus with dorsal margin smooth and concave preapically (Fig. 33); paraphyses with posterior rami divergent at basal half (Fig. 35); female sternite VII broader than long (Fig. 36).................................................................................................................................................................................. E. luteovittata sp. nov. (Rio de Janeiro State)   
 - Crown with stripes not extending anteriorly beyond frontogenal sutures and with small pale yellow maculae on median portion (Fig. 68); forewings with small aligned pale maculae on costal area (Fig. 66); subgenital plates abruptly narrowed toward apex on basal half (Fig. 71); styles with preapical lobe on inner margin (Fig. 72); connective with broad stalk (Fig. 72); aedeagus with dorsal margin serrate and approximately rectilinear (Fig. 73); paraphyses, in dorsal view, with posterior rami approximately parallel at basal half (Fig. 75); female sternite VII longer than broad (Figs 76, 77)........................................................................................................................................................................... E. hyalinosparsa (Melichar, 1932), in part (Rio de Janeiro, São Paulo, Paraná, and Santa Catarina states)   
3. Dorsum with very small pale maculae (Figs 9, 10, 20, 21, 39, 40, 69)........................................................................ 4  
- Dorsum marked differently, small maculae when present always occurring with larger ones (Fig. 67)...................... 7  
 4. Subgenital plates abruptly narrowed toward apex on basal half (Fig. 71); connective stalk broad (Fig. 72).............................................................................. E. hyalinosparsa (Melichar, 1932), in part (Paraná and Espírito Santo states)   
- Subgenital plates gradually narrowed toward apex (Figs 12, 23, 42); connective stalk narrow (Figs 13, 24, 43)....... 5  
 5. Aedeagus with small dorsoapical process (Fig. 25). .................................. E. longinqua sp. nov. (Mato Grosso State)   
- Aedeagus without small dorsoapical process (Figs 14, 44).......................................................................................... 6  
 6. Connective shallowly concave between arms (Fig. 43); aedeagus (Fig. 44), in lateral view, without dorsal projection on basal half; paraphyses with posterior rami narrower toward apex (Figs 45, 46); female sternite VII with posterior margin approximately rectilinear (Fig. 47); second pair of valvulae with ventral margin distinctly convex on apical third up to preapical prominence, basal teeth (except first three) large and rectangular, and becoming irregularly smaller and subtriangular apically (Fig. 49). ..................................................... E. paranaensis sp. nov. (Paraná State)   
 - Connective deeply concave between arms (Fig. 13); aedeagus (Fig. 14), in lateral view, with dorsal projection on basal half; paraphyses with posterior rami broader toward apex (Figs 15, 16); female sternite VII with posterior margin concave (Fig. 17); second pair of valvulae with ventral margin uniform, without distinct convexity before preapical prominence, basal teeth large and rectangular, and becoming gradually smaller and quadrate apically (Fig. 19). .............................................................................................................. E. flavomaculata sp. nov. (Espírito Santo State)   
 7. Ground color of forewings yellowish-orange................................................................................................................................................................... E. semivitta (Walker, 1851) (Young 1977: fig. 184. Rio de Janeiro and Bahia states)   
- Ground color of forewings brown to dark brown......................................................................................................... 8  
8. Frons dark brown to black with pale yellow macula mostly on median portion.......................................................... 9  
- Frons yellow with brown marks mostly on muscle impressions................................................................................ 12  
9. Forewings with two yellow maculae (Figs 50, 58)..................................................................................................... 10  
- Forewings with three or more ivory or yellowish-white maculae.............................................................................. 11  
 10. Pronotum with transverse yellow macula not extending to lateral pronotal lobes (Figs 58, 59); forewings with claval transcommissural macula and macula on corium not reaching costal margin (Fig. 58)........................................................................................................................................................................................... E. una sp. nov. (Bahia State)   
 - Pronotum with transverse yellow macula extending to lateral pronotal lobes (Figs 50, 51); forewings with claval macula not transcommissural and macula on corium transverse and reaching costal margin (Fig. 50)..................................................................................................................................................... E. paulista sp. nov. (São Paulo State)   
 11. Paraphyses with one pair of rami................................................................................................................................................. E. leucampix (Signoret, 1853) (Young 1977: fig. 182. Santa Catarina, São Paulo, and Rio de Janeiro states)   
 - Paraphyses with two pairs of rami...................................................................................................................................... E. assimilis (Signoret, 1853) (Young 1977: fig. 181. Santa Catarina, São Paulo, Rio de Janeiro, and Bahia states)   
 12. Subgenital plates abruptly narrowed toward apex on basal half (Fig. 71); connective stalk broad (Fig. 72).............................................................................. E. hyalinosparsa (Melichar, 1932), in part (Paraná and Espírito Santo states)   
 - Subgenital plates gradually narrowed toward apex (Fig. 4); connective stalk narrow (Fig. 5)...................................... .................................................................................................................... E. capixaba sp. nov. (Espírito Santo State)   
   Exogonia capixaba Mauro-Barr, Carvalho et Felix  sp. nov.    
(Figs 1–8)  
 Length: Male holotype, 10.0 mm.   
 Male holotype. Head (Figs 1, 2), in dorsal view, moderately produced, anterior margin broadly rounded; crown with median length 3/5 interocular width and 2/5 transocular width; epicranial suture distinct; temporal sutures partially visible; frontogenal sutures distinct. Pronotum (Figs 1, 2), in dorsal view, with width approximately equal to transocular width. Forewings (Fig. 1) with membrane slightly developed on apical portion of apical cells.   
Ground color of dorsum (Figs 1, 2) brown. Crown with anterior margin yellow; median portion with dark brown areas delimiting three brown maculae, one anteriorly and pair posteriorly. Pronotum with irregularshaped yellow maculae on anterior two-thirds. Forewings (Fig. 1) with five yellow maculae; one on basal portion of clavus and four on corium, one on basal portion of discal cells, two near apex of clavus and one on apex of first apical cell and base of second apical cell. Frons yellow with pair of narrow brown stripes on dorsal half; clypeus with brownish-yellow macula on median portion. Lateral and ventral portions of thorax yellow except for brown to dark brown areas on anepisternum and lateral portions of mesosternum; legs yellow.  
Pygofer (Fig. 3), in lateral view, with macrosetae on apical portion and extending anteriorly along ventral margin; apical portion with inner process bearing numerous setae. Subgenital plates (Fig. 4), in ventral view, gradually tapered toward apex; ventral surface with macrosetae near outer margin. Styles (Fig. 5), in dorsal view, extending posteriorly beyond apex of connective; with distinct external median lobe; apical portion beyond lobe curved, with few setae; apex truncate. Connective (Fig. 5), in dorsal view, Y-shaped. Aedeagus (Fig. 6) with shaft, in lateral view, curved ventrally, with distinct dorsoapical expanded lobe. Paraphyses (Figs 7, 8) with anterior pair of rami directed anteroventrally in lateral view; posterior pair slightly shorter than anterior one, directed posterodorsally in lateral view; stalk approximately as long as anterior rami. Anal tube (segment X), in lateral view, with pair of small processes on ventroapical margin bearing numerous setae similar to those of pygofer.  
 Female genitalia. Unknown.   
 Etymology. The specific epithet, capixaba, is from the indigenous language Tupi-Guarani and refers to the natives from Espírito Santo State, Brazil.   
 Type-material. Brazil, Espírito Santo State. Holotype: male, “Rib.[Ribeirão] do Engano E.S.\ Vale do Itauna \ Trav.[Travassos] e Santos-9-10-42” (MNRJ).
description: Published as part of Mauro-Barr, T. T., Carvalho, R. A., Felix, M. & Mejdalani, G., 2009, Taxonomy of the Neotropical leafhopper genus Exogonia with description of seven new Brazilian species (Hemiptera: Cicadellidae: Cicadellini), pp. 43-68 in Zootaxa 2046 (1) on pages 45-47, DOI: 10.11646/zootaxa.2046.1.3, http://zenodo.org/record/5321354