Ommatolampina

Cadena-Castañeda, Oscar J. & Cardona-Granda, Juan Manuel, 2025, Studies on Neotropical grasshoppers: Estefaniacris gen. nov. (Orthoptera: Acrididae), a new Andean genus, Zootaxa 5661 (2), pp. 261-273 : 263-264

Key to the genera of Ommatolampina

(Adapted from Carbonell & Descamps 1978, Cadena-Castañeda & Cardona-Granda, 2015)

1. Last segment of maxillar palpi not compressed, and is of a single color........................................... 2

- Last segment of maxillar palpi compressed, typically elongated, and always lighter than the rest....................... 4

2. Micropterous, tegmina more than six times as long as they are wide, longer than the pronotum, non-areolate, and light in color. Lower carina of hind femora smooth; metazona with similar level with prozona......................... Leptopteracris

- Subapterous grasshoppers, vestigial tegmina go no longer than the hind margin of the pronotum. Lower carina of hind femora rugose; metazona lower than the prozona.................................................................. 3

3. Pronotum with a cross-keel quite noticeable, very echinulated, between sulci 3-4; metanotum and first abdominal tergite with a mid-posterior protuberance; supra-anal plate in males with numerous small black granulations............... Kyphiacris

- Pronotum with a less noticeable, less rugose crosskeel; metanotum and first abdominal tergite with no mid-posterior protuberance; supra-anal plate in males with a few prominent protuberances............................ Ronderosacris

4. Subapterous or micropterous insects with very long tegmina, at least three times as long as wide and even more.......... 5

- Micropterous insects with big, subovoid tegmina........................................................... 13

5. Micropterous insects with very long tegmina............................................................... 6

- Subapterous insects, vestigial tegmina do not go longer than the hind margin of metanotum......................... 12

6. Tegmina more than six times longer than wide, as long or longer than the pronotum, weakly areolate, and lighter in color than total body color....................................................................................... 7

- Tegmina is three to six times longer than wide, mostly shorter than the pronotum, clearly areolate, of the same color as the total body color........................................................................................... 8

7. Reddish or bright, metallic green body with multiple pores. Tegmina cover the tympanum and base of the second abdominal tergite; lanceolate, whitish tegmina, as long as the pronotum, slightly expanded in the distal portion. Thorax and first abdominal tergites are not dorsally dilated.................................................................. Dicaearchus

- Mostly brownish, body not porose. Tegmina cover the base of tympanum and base of first abdominal tergite; lanceolate tegmina, as long as the pronotum, of the same width over their entire length. Thorax and first abdominal tergites dorsally dilated............................................................................................. Tingomariacris

8. Tegmina with black cells; last segment of maxillary palpi compressed but not elongated; fastigium of vertex in males sometimes pale but not white or bright yellow........................................................................ 9

- Tegmina with black or non-colored cells; last segment of maxillary palpi compressed and elongated; fastigium of vertex in males white or bright yellow........................................................................... 10

9. Pronotal disc with a lateral widening between sulci 3-4; male cerci subtriangular compressed, internal apophysis not very compressed................................................................................. Episomacris

- Pronotal disc with no lateral widening between sulci 3-4; male cerci conical not compressed, internal apophysis narrow and poorly developed............................................................................ Muriciacris

10. Tegmina noticeably narrowed, with a uniform coloration across the entire surface. Metanotum and first abdominal tergite without protuberances. Last abdominal segment without extensions or conspicuous modifications. Cerci moderately widened, subtriangular, and generally with an internal apophysis...................................................... 11

- Tegmina lanceolate, moderately narrowed, bicolored, with one-half black and the other whitish. Metanotum and first abdominal tergite with a mid-posterior protuberance. Last abdominal segment is noticeably modified into a concave extension that projects upward, with a denticulated posterior edge. Cerci slender and hook-shaped, without an internal apophysis................................................................................................. Estefaniacris gen. nov.

11. Pronotal disc in males with two clear plates is well-delimited; mid part of last abdominal tergite in males without protuberance below the supra-anal plate. Supra-anal plate in males with no subapical widenings; internal apophysisoif cerci in males little compressed, of narrow tip; tegmina with black cells or black tip..................................... Stenelutracris

- Pronotal disc in males without well-delimited plates; mid part of last abdominal tergite in males with a protuberance below the supra-anal plate. Supra-anal plate in males with subapical widenings; internal apophysis of cerci in males laterally compressed, long tip; tegmina with no colored cells nor black tip.................................................... Peruana

12. Face profile mostly rectilinear; lower-inner carina of hind femora strongly rugose; abdominal tympani very close of hind margin of first tergite; fastigium of vertex of sub-rectilinear margins.................................. Eucosmecacris

- Face profile mostly curved; lower-inner carina of hind femora smooth; abdominal tympani not close of hind margin of first tergite; fastigium of vertex of outwardly curved margins........................................... Nepiopteracris

13. Tegmina with a big black spot and wavy hind margin; fastigium of vertex in females can be white or showy colored...... 14

- Ovoid tegmina, with no big black spots; fastigium of vertex in females white or showy colored...................... 15

14. Hind margin of last tergite and supra-anal plate with numerous small black granules in males; internal apophyse of cerci in males strongly compressed and forming a sulcus with the cerci; fastigium of vertex rugose, never white or yellowish-white.............................................................................................. Lamiacris

- Hind margin of last tergite in males with few protuberances; supra-anal plate in males with two rows of strong black protuberances; internal apophysis of cerci narrow; fastigium of vertex smooth, yellowish white............. Ommatolampis

15. Tegmina with dense black punctation in both sexes; face almost smooth, very light in color, white or yellow; lateral lobes of pronotum with no lower whitish strip........................................................... Eulampiacris

- Tegmina in males with a hind margin not very curved outwards, with a row of black cells in a semicircle; tegmina in females with a big black cell towards the middle, circled in the lower parts by an arch of smaller-sized cells; face rugose; lateral lobes of pronotum with a lower light strip in males...................................................... Hippariacris