Edessa gentilitia . Holotype female. Mexico, Venta de Pelegrino in Guerrero (H. H. Smith) (BMNH). Examined.

Material examined. MEXICO, Morelos: 1♁, Cuernavaca, 6–8-VII-1974, Clarck, Murray, Ashe & Schaffner (TAMU) ; Chiapas: 1♀, Aqua Cera, 21-VI-1987, Gutierrez (Comp. W type — Fernandes JAM 1999) (TH) ; Chihuahua: 1♀, Naica, Carazo, Bioreserva, Chococente, 11–13-IX-1992, J. M. Maes & A. Martinez col. (UFRGS) ; Jalisco: 1♀ 1♁, Est. De. Biol. Chamela, 6-VII-1990, G. Ortega & C. Mayorga (UNAM) ; 1♁ same data (UFRGS); 1♀, Est. De. Biol. Chamela, 7-VII-1990, G. Ortega & C. Mayorga (UNAM) .

Measurements (n= 7). Total length: 16.4–17.4; head length: 1.5–1.5; head width: 3.3–3.5; pronotum length: 3.3–3.5; pronotum width: 10.4–11.5; scutellum length: 7.5–8.4; scutellum width: 6.0–6.8; abdominal width: 9.5– 10.8; length antennomers: I: 1.0–1.0; II: 1.5–1.5; III: 1.8–2.0; IV: 3.0–3.3; V: 3.5–4.0.

Diagnosis. Specimens large (16.4–17.4 mm).Dorsal surface olive green(Fig. 26A).Ventral surface dark yellow to brown with transversal brown lines on thorax and abdomen (Fig.26 B).Antennae reddish brown(Fig. 26 B). Pronotum with punctures concolorous with surface to brown (Fig. 26 A). Humeral angles very short (1,75 times wider than long) (Fig. 26 A), apices black and not recurved (Fig. 26 A); humeral angle dark spot restricted to the angle in dorsal and ventral views (Fig. 26 A,B). Scutellum with punctures brown to concolorous with surface (Fig. 26 A); apex not reach end of corium (Fig. 26 A). Corium with all veins concolorous with surface (Fig. 26 A). Posterolateral angles of connexivum with apices concolorous with surface (Fig. 26 A); connexival segments without spot and with a pair of concavities (Fig. 26 A). Ventral surface. Thorax with brown stripes (Fig. 26 B); dark stripe of the propleuron covering 2/3 of the width of the sclerite (Fig. 26 B). Evaporatorium brown (Fig. 26 B). Metasternal process (Fig. 7 G) with anterior apex straight and laterally little expanded, margin rounded; anterior face broadly excavated; anterior bifurcation receiving fourth rostral segment. Legs brown (Fig. 26 B). Abdomen with spine of third segment acuminated (Fig. 7 G). Intersegmental areas with brown and wide stripe, not reaching lateral margin (Fig. 26 B). Pseudosutures smoky brown, margin irregular (Fig. 26 B). Median longitudinal brown band incomplete (Fig. 26 B). Trichobotria one in line with spiracle and the other lateral. Posterolateral angles of segment VII not reaching the level of apices of laterotergites IX in females (Fig. 7 F). Male genitalia, posterolateral angle of pygophore slightly developed (Fig. 7 A). Superior process of genital cup laminar, rectangular, narrow, slightly curved, with projected apex, not continuing ventrally in a carina (Fig. 7 B,E). Ventral rim with lateral subdistal tuft of setae (Fig. 7 C,D). Female genitalia, laterotergites VIII with light brown band on outer lateral margins (Fig. 7 F).

Male genitalia (Fig. 7 A–E): Parameres with black margin; anterior lobe round; dorsal lobe rounded, curved apex; posterior lobe rounded (Fig. 7 B,D,E). Proctiger with subtriangular posterior face (Fig. 7 D,E). Ventral rim with expansions little developed, rounded, concolorous with surface, the expansions the same level the apices of posterolateral angles (Fig. 7 C).

Female genitalia: Valvifers VIII with dark punctures and setulose; inner margins contiguous, with brown band and not divergent; distal margin with brown band and arched. Laterotergites IX with apices acuminate passing the sclerite uniting laterotergites VIII (Fig. 7 F).

Comments. The male of Edessa (E.) gentilitia is described here for the first time. The species E. (E.) gentilitia shares with E. (E.) nigriclava and E. (E.) phoenicopus the humeral angles slightly developed and connexival segments spotless (Fig. 26 A). The E. (E.) gentilitia can be separated from E. (E.) nigriclava by the humeral angle less developed and swollen (Fig. 26 A), and evaporatorium dark brown (Fig. 26 B) (humeral angle more developed and swollen and evaporatorium concolorous in E. (E.) nigriclava — Fig. 28 A,B). The E. (E.) gentilitia can be separated from E. (E.) phoenicopus by the humeral angle slightly developed and black, and corial veins concolorous (Fig. 26 A) (in E. (E.) phoenicopus humeral angle is more developed and concolorous with pronotum, and corial veins yellow— Fig. 29 A,B).

Distribution (Fig. 31 A): MEXICO: Chihuahua, Jalisco, Morelos, Guerrero, Chiapas.