Elanela Rolston, 1980

Elanela Rolston, 1980 in Rolston et al. (1980): 125–126, figs. 8, 12–13; Grazia & Greve, 2011: 261–262.

Type species. Elanela hevera Rolston, 1980 by original designation.

Description. Body castaneous with brown punctuations. Lateral margin of each mandibular plate outlined in black; each buccula with black, longitudinal stripe with a row of deep punctures basally; distal half of antennal articles IV and V black. Legs yellow, area surrounding each setae brown; scutellum with small yellow calluses on each basal angle and on basal margin medially; disc of scutellum black, reddish, or ivory, calloused; corium of hemelytra black medially, radial vein with a subapical yellow spot; membrane of hemelytra infuscate. Outline of each abdominal urosternite black.

Head wider than long, strongly sloping ventrally; apex of each mandibular plate not surpassing clypeus; margins of mandibular plates strongly concave before eyes; posterior margin of each buccula rounded; first labial segment surpassing bucculae; first antennal segment stout; proportion of antennal segments variable. Pronotum trapezoidal; anterolateral margins straight; humeral angles rounded; posterior margin slightly convex, nearly straight; apex of scutellum obtuse; scutellum shorter than corium; apex of corium rounded, reaching posterior margin of abdominal segment VI; femora unarmed; mesosternum carinate; metasternum produced, humped towards the midline, carinate anteriorly and bifurcate posteriorly; ostiole of metasternal gland elliptical, peritreme spout-shaped; evaporatorium covering most of mesopleura and metepisternum. Posterolateral angle of each connexivum acute.

Male genitalia. Ventral wall of pygophore impressed. Parameres covering segment X basally. Segment X elongate or quadrate; if quadrate, each posterolateral angle of segment X produced posteriorly. Phallus: conjunctiva absent, vesica reduced.

Female genitalia. Gonocoxites 8 covering most of gonocoxites 9. Each laterotergite 8 with a spiracle; posterior margin of laterotergite 8 with small process. Gonocoxites 9 flat or swollen.

Distribution. South America: Suriname (Paramaribo), French Guiana, Colombia (Amazonas), Ecuador (Napo), Peru (Loreto), Brazil (Amapá, Amazonas, Pará, Rondônia).

Key to species of Elanela Rolston, 1980

1. Legs yellow; few, scattered brown spots on each leg; urosternite VII black medially. Gonocoxites 8 as long as wide (Fig. 21)................................................................................. E. scutomaculata sp. nov.

- Legs yellow; several brown spots on each leg; urosternite VII concolour with remaining urosternites. Gonocoxites 8 longer than wide or wider than long............................................................................ 2

2(1). Pygophore with marginal processes on each side of dorsal rim medially, each process projected posteriorly and developed inwards genital cup; segment X elongate, carinate dorsally, sinuous posteriorly, and blunt apically (Fig. 13). Gonocoxites 9 flat; distal margin of gonocoxites 9 deeply notched medially (Fig. 15)........................ E. diamphidiosa sp. nov.

- Pygophore without marginal processes on each side of dorsal rim; segment X quadrate, convex or concave dorsally, each posterolateral angle of segment X produced posteriorly. Gonocoxites 9 flat or strongly convex; distal margin of gonocoxites 9 shallowly notched medially or straight.................................................................... 3

3(2). Distal half of femur of metathoracic legs black. Ventral rim of pygophore with acute process medially (Fig. 10). Gonocoxites 9 swollen, strongly convex, higher in profile than gonocoxites 8 (Fig. 11)...................... E. nigrofemorata sp. nov.

- Distal half of femur of each metathoracic leg castaneous with brown spots. Ventral rim of pygophore lacking acute process medially. Gonocoxites 9 flat, if swollen, lower than gonocoxites 8.............................................. 4

4(3). Segment X surpassing posterior margin of pygophore........................................................ 5 - Segment X not surpassing posterior margin of pygophore.................................................... 7

5(4). Parameres acute apically; distal margin of segment X with deep U-shaped notch. Posterior margins of gonocoxites 8 sinuate, concave medially; apex of each laterotergite 9 acute...................................... E. jordi Grazia & Greve

- Parameres quadrate apically; distal margin of segment X with deep V-shaped notch. Posterior margins of gonocoxites 8 straight; posterior margin of gonocoxites 9 sinuate; apex of each laterotergite 9 obtuse.............................. 6

6(5). Pygophore globose; ventral rim rounded laterally; parameres with apices not juxtaposed. Posterior margin of gonocoxites 9 sinuate; laterotergites 9 surpassing tergite VIII................................................. E. hevera Rolston

- Pygophore quadrate; ventral rim triangular laterally; parameres with apices juxtaposed. Posterior margin of gonocoxites 9 convex; laterotergites 9 not surpassing tergite VIII....................................... E. kerzhneri Grazia & Silva

7(4). Parameres reduced, scarcely visible dorsally; projections of ventral rim of pygophore stout, quadrate at apex (Figs 17–18)...

...................................................................................... E. rafaeli sp. nov.

- Parameres scythe-like, projected mesially, not reaching posterior margin of pygophore; projections of ventral rim of pygophore rounded at apex (Figs 19–20).......................................................... E. fernandesi sp. nov.