Mucrotettigina Cadena-Castañeda & Silva, 2019

Cadena-Castañeda, Oscar J., Quintana-Arias, Ronald Fernando, Infante, Ivette Coque, Silva, Daniela Santos Martins & Tavares, Gustavo Costa, 2025, Studies on pygmy grasshoppers: On the current Metrodorinae sensu lato classification (Orthoptera: Tetrigidae) with emphasis on American and Malagasy taxa, Zootaxa 5597 (1), pp. 1-265 : 90-95

Subtribe Mucrotettigina Cadena-Castañeda & Silva, 2019 , nom. resurr., stat. nov.

Type genus: Mucrotettix Perez-Gelabert, Hierro & Otte, 1998 .

Emended description. Body small and robust (4–10 mm.) ( Figs. 59 , 62 ). Carinae of the vertex poorly ( Figs. 59A, 59C , 60A ) or well produced ( Figs. 59B , 60B ); lateral carinae of the vertex without pronounced horns or with them moderately developed. Antennae with 10–12 segments (only Mucrotettix and † Baeotettix with 14 segments). Scutellum generally wider than two or three times the width of the scape. Frontal coast branches usually curved or diverging, not straight. Pronotal disc with a constant width and only narrowing near the apex ( Fig. 59 ). Hind margin of pronotum truncated in dorsal view, or if not entirely truncated, with a secondary extension like a spine, that arises in the middle of the apex of the pronotum. Lower margin of the lateral lobes of the pronotum moderately projected to the sides, with the apex rounded, without spines (except Armasius ). Median carina of the pronotum mostly arcuate, forming a crest with different degrees of development ( Figs. 59 , 60 , 61 , 62 ). Infrascapular area broad, extending towards the posterior margin of pronotum in lateral view. Tegminae and hindwings absent (only vestigial in † Electrotettix ). Fore and mid femora margins undulated, hind femur robust; lappets and antegenicular tooth developed in the hind legs; first article of posterior tarsi as long as the third.

Genera included. Mucrotettix Perez-Gelabert, Hierro & Otte, 1998 , Antillotettix Perez-Gelabert, 2003 , Armasius Perez-Gelabert & Yong, 2014 , † Baeotettix Heads, 2009 , Bahorucotettix Perez-Gelabert, Hierro & Otte, 1998 , Cubanotettix Perez-Gelabert, Hierro & Otte, 1998 , Cubonotus Perez-Gelabert, Hierro & Otte, 1998 , † Electrotettix Heads & Thomas, 2014 , Haitianotettix Perez-Gelabert, Hierro & Otte, 1998 , Hottettix Perez-Gelabert, Hierro & Otte, 1998 , Sierratettix Perez-Gelabert, Hierro & Otte, 1998 , Tiburonotus Perez-Gelabert, Hierro & Otte, 1998 , and Truncotettix Perez-Gelabert, Hierro & Otte, 1998 .

Distribution. Greater Antilles, Cuba, and Hispaniola ( Haiti and Dominican Republic) (Map 5).

Remarks. Recently, Kasalo et al. (2023a) synonymized Mucrotettigini Cadena-Castañeda & Silva, 2019 , arguing that the characters that diagnosed the tribe could not separate with the establishment of Metrodorini . However, characters are provided here, allowing us to differentiate Mucrotettigina , but now with the status of subtribe, allowing identification and differentiation from continental subtribes.

MAP 5. Distribution of Metrodorini ( Mucrotettigina stat. nov.) species.

By transferring the genera from Mucrotettigina stat. nov. to Metrodorini (Metrodorinae) , the subfamily Cladonotinae is no longer the most diverse in the Antilles. The other species recorded by Perez-Gelabert et al. (1998) from Antillean specimens of the subfamilies Tetriginae and Batrachideinae should be reviewed again; they are probably morphologically similar species, yet to be described.

An updated key for the subtribe is presented below. Still, on this occasion, no redescription or nomenclatural changes are made to the genera and species, since the original descriptions are adequate. Additional data were provided in our contribution to the Antillean tetrigids in Silva et al. (2019a).

Key to genera of Mucrotettigina (modified after Silva et al. 2019)

1. Tegmina and vestigial hind wings present........................................................ † Electrotettix

- Tegmina and hind wings absent.......................................................................... 2

2. Lateral lobe of pronotum directed sidewards, flattened, and with spine.................................... Armasius

- Lateral lobe of pronotum directed downward and continuous with body.......................................... 3

3. Posterior margin of pronotum sharply pointed............................................................... 4

- Posterior margin of pronotum not sharply pointed............................................................ 5

4. Pronotum slightly tapering towards the posterior margin of pronotum, with an arrow-shaped apex ( Fig. 59A )...................................................................................................... Cubanotettix

- Pronotum tapering towards the posterior margin of pronotum and abruptly sharpening up as a spine ( Figs. 59B, C ).................................................................................................... Mucrotettix 5. Posterior margin of pronotum ‘U’ shaped ( Fig. 60A )................................................... Hottettix

- Posterior margin of pronotum not ‘U’ shaped............................................................... 6

6. Posterior margin of pronotum rounded.................................................................... 7

- Posterior margin of pronotum not rounded................................................................. 8

7. Posterior margin of pronotum serrated. Frontal costa rami bilobated with a small proximal lobe and a larger distal lobe forming prominent curved ridges between the antennal fossae. Antennae with 14 segments.......................... † Baeotettix

- Posterior margin of pronotum not serrated. Frontal costa rami unilobated. Antennae with 12 segments....... Bahorucotettix

8. Posterior part of pronotum tapering from the base toward the apex, without a truncated apex.......................... 9

- Posterior part of pronotum poorly tapering from the base toward the apex, with a truncated apex ( Fig. 60B )...... Cubonotus

9. Posterior margin of pronotum slightly curving upward ( Fig. 61A )...................................... Tiburonotus

- Posterior margin of pronotum not curving upwards.......................................................... 10

10. Anterior margin of pronotum slightly hook-like over the head ( Fig. 61B )................................. Sierratettix

- Anterior margin of pronotum rounded.................................................................... 11

11. Pronotum covering the whole abdomen. Antennae with 12 segments ( Figs. 61C , 62A )...................... Truncotettix

- Pronotum not covering the whole abdomen. Antennae with 10 segments......................................... 12

12. Body medium-sized (8.4–9.8 mm.). Hind femur with at least two denticles (lappets) in dorsal view ( Fig. 62B )..................................................................................................... Haitianotettix

- Body size very small (4–7 mm.). Hind femur without denticles (lappets) in dorsal view..................... Antillotettix

Figures

FIGURE 59. Habitus in lateral view of Mucrotettigina species. A. Cubanotettix turquinensis Perez-Gelabert, Hierro & Otte, 1998. B. Mucrotettix gibbosus Perez-Gelabert, Hierro & Otte, 1998. C. Mucrotettix spinifer Perez-Gelabert, Hierro & Otte, 1998.

FIGURE 60. Habitus in lateral view of Mucrotettigina species. A. Hottettix haitianus Perez-Gelabert, Hierro & Otte, 1998. B. Cubonotus altinotatus Perez-Gelabert, Hierro & Otte, 1998.

FIGURE 61. Habitus in lateral view of Mucrotettigina species. A. Tiburonotus peninsularis Perez-Gelabert, Hierro & Otte, 1998. B. Sierratettix carinatus Perez-Gelabert, Hierro & Otte, 1998. C. Truncotettix fronterizus Perez-Gelabert, Hierro & Otte, 1998.

FIGURE 62. Habitus in lateral view of Mucrotettigina species. A. Truncotettix interruptus Perez-Gelabert, Hierro & Otte, 1998. B. Haitianotettix tuberculatus Perez-Gelabert, Hierro & Otte, 1998.