TETRIGIDAE, Rambur, 1838

Kasalo, Niko, Naskrecki, Piotr, Rebrina, Fran & Skejo, Josip, 2023, Central American Tetrigidae Rambur, 1838 (Orthoptera): a preliminary catalogue, Zoosystema 45 (7), pp. 177-212 : 203-204

KEY TO THE CURRENTLY RECOGNIZED SPECIES OF CENTRAL AMERICAN TETRIGIDAE

1. Median carina of pronotum forming a well-developed crest, antennae not filiform (composed of trapezoidally flattened antennal segments) .......................................................................................................................... ........ subfamily Lophotettiginae , genus Lophotettix Hancock, 1909 , subgenus Lophotettix Hancock, 1909 (2)

— Median carina of pronotum without a crest or with a moderately-developed crest, filiform antennae .......... 3

2. Crest semicircular, ending with a slight slope of the posterior margin. One small but sharp undulation on the anterior margin ........................................................... Lophotettix (Lophotettix) brevicristatus Hancock, 1909

— Crest semioval or resembling a backward-facing fin. The posterior margin of the crest slightly concave or perpendicular to the pronotum ............................................. Lophotettix (Lophotettix) zumbadoi Barranco, 2010

3. Anterior and middle femora with a dorsal furrow, frontomedial projection in the form of a spine, lateral lobes of the pronotum straight alongside the body, wings of varying lengths ............... subfamily Atrachideinae (4)

— Anterior and middle femora without a dorsal furrow, frontomedial projection absent, lateral lobes of pronotum usually produced away from the body, wings usually as long as the pronotum ... subfamiliy Metrodorinae (6)

— Anterior and middle femora without a dorsal furrow, lateral lobes of pronotum usually straight alongside the body, wings usually surpassing the apex of the pronotum ....................................... subfamily Tetriginae (16)

4. Blunt frontomedial projection, apex of tegmina with a vertical stripe or elongated spot, sides of the body black, top of the pronotum of varying shades of black and brown .............................. Tettigidea lateralis ( Say, 1824)

— Blunt frontomedial projection, tegmina not maculated, vertex higher than the top margin of the eyes, browngrey coloration ............................................................................................. Paurotarsus insolitus Rehn, 1916

— Short and sharp frontomedial projection, brightly colored body with a thick dark lateral stripe, black tegmina with a bright spot at the apex .......................................................................... Scaria fasciata Hancock, 1907

— Frontomedial projection strongly produced over the head, median carina raised, brownish coloration ........ 5

5. Median carina and dorsal margin of the frontomedial projection smooth, frontomedial projection reaching past the level of the eyes, tegmina invisible ......................................................... Cranotettix alpha Grant Jr., 1955

— Median carina and dorsal margin of the frontomedial projection vertically undulate, tegmina invisible .......... ............................................................................................................. Plectronotus excavatus Grant Jr., 1955

— Median carina and dorsal margin of the frontomedial projection vertically undulate, tegmina visible ............. ...................................................................................................................... Plectronotus scaber Morse, 1900

6. Median carina anteriorly forming multiple well-expressed crests, one moderately high crest and several smaller ones behind it ................................................................................................. Chiriquia serrata Morse, 1900 — Median carina without a crest or with a singular crest ................................................................................. 7

7. Wings and tegmina absent .......................................................................................................................... 8 — Wings and tegmina present ....................................................................................................................... 12

8. Prozonal carinae parallel, median carina slightly to strongly elevated, medial carina of the vertex strongly protruding past the level of the eyes ................................................................ genus Metrodora Bolívar, 1887 (9)

— Prozonal carinae moderately diverging towards the head, wings and tegmina absent, median carina not prominent, fastigium not surpassing the level of the eyes ...................................... Platythorus camurus Morse, 1900

9. Median carina forming a crest ................................................................................................................... 10 — Median carina without a crest, bearing slight elevations ............................................................................. 11

10. Median carina forming a large crest in the anterior part, lateral lobes blunt and moderately produced ........... .............................................................................................................. Metrodora harroweri ( Hebard, 1924)

— Median carina forming a slight crest, lateral lobes sharp and strongly produced .............................................. ............................................................................................................... Metrodora panamae ( Hebard, 1924)

11. Median carina slightly elevated in the anterior part, the anterior margin of the pronotum at approximately the same level as the median carina, lateral lobes moderately produced, anterior and middle femora smooth ....... .................................................................................................................. Metrodora simplex ( Hebard, 1924)

— Median carina slightly elevated throughout its length, slightly sinuate, the anterior margin of the pronotum below the level of the median carina, lateral lobes slightly produced, anterior and middle femora tuberculate .................................................................................................................... Metrodora sinuata ( Morse, 1900)

12. Prozonal carinae parallel or slightly diverging towards the head, vertex as wide as an eye or narrower, vertex narrowing anteriorly .................................................................................................................................. 13

— Prozonal carinae slightly diverging towards the head, vertex slightly wider than an eye, vertex not narrowing anteriorly ................................................................................................................................................... 15 13. Medial and lateral carinae of the vertex elevated in the anterior third of the vertex, top margin of the antennal grooves above the bottom margin of the eyes, lateral lobes of the pronotum mostly straight alongside the body ....................................................................................................... Allotettix otumboides Günther, 1939

— Medial and lateral carinae of the vertex elevated in the anterior quarter of the vertex, antennal grooves below the bottom margin of the eyes, lateral lobes of the pronotum produced away from the body .......................... .............................................................................................................................. Otumba Morse, 1900 (14)

14. Lateral lobes sharp, strongly protruding, with a smaller projection on the posterior margin, anterior margin of the vertex narrower than the width of an eye, vivid coloration ...................... Otumba aciculata Hebard, 1924

— Lateral lobes sharp, strongly protruding, with a strong projection on the posterior margin, anterior margin of the vertex equally wide as an eye, vivid coloration ........................................ Otumba dentata Hancock, 1907

— Lateral lobes blunt and slightly protruding, anterior margin of the vertex equally wide as an eye, plain brown coloration ...................................................................................................... Otumba scapularis Morse, 1900

15. Pronotum surface with slight elevations, top margin of antennal grooves above the bottom margin of the eyes, pronotum on the same level throughout its length ................................. Crimisus costaricensis Günther, 1939

— Pronotum surface without elevations, top margin of antennal grooves at the level of the bottom margin of the eyes, pronotum raising towards the apex which is above the level of the head ........... Scabrotettix biolleyi Bolívar, 1909

16. Vertex more than two times wider than an eye, fastigium strongly protruding past the level of the eyes .......... ............................................................................................................. Ochetotettix barretti ( Hancock, 1899)

— Vertex two times as wide as an eye or narrower, fastigium protruding slightly past the level of the eyes or not protruding ................................................................................................................................................. 17

17. Vertex less wide than an eye ............................................................................. Teredorus Hancock, 1907 (18)

— Vertex as wide as an eye or a little wider .................................................................................................... 19

18. Anterior femora stout, dorsal margin of anterior femora semi-elliptical, ventral margin of middle femora with a slight tubercle in the middle ................................................................... Teredorus aztecus ( Saussure, 1861)

— Anterior femora elegant, dorsal margin of anterior femora straight, ventral margin of middle femora straight ................................................................................................................. Teredorus stenofrons Hancock, 1907

19. Tectiform pronotum, clypeate middle femora with a strong tubercle on their ventral margin ......................... ................................................................................................................. Clypeotettix schochii ( Bolívar, 1887)

— Mostly flat pronotum, slender middle femora with flat ventral margin or with a tubercle ............................... ........................................................................................................................... Paratettix Bolívar, 1887 (20)

20. Vertex as wide as an eye or a little wider, fastigium barely surpassing the level of the eyes, first tarsal segment of the hind femora barely longer than the third, middle femora robust with at least one prominent tubercle on the ventral margin ...................................................................................... Paratettix mexicanus ( Saussure, 1861)

— Vertex nearly 2 times wider than an eye, fastigium not surpassing the level of the eyes, first tarsal segment of the hind leg longer than the third, middle femora slender ............................... Paratettix toltecus ( Saussure, 1861)

— Vertex a little wider than an eye, fastigium at the level of the eyes, first tarsal segment of the hind leg around 1.5 times as long as the third, middle femora slender .............................. Paratettix freygessnerii Bolívar, 1887