Gabusibius, Hugel & Desutter-Grandcolas, 2021

Hugel, Sylvain & Desutter-Grandcolas, Laure, 2021, New intertidal crickets from Comoros and Mascarene islands (Orthoptera Trigonidiidae: Nemobiinae: Burcini), Zootaxa 4995 (1), pp. 1-26 : 13-16

publication ID	https://doi.org/ 10.11646/zootaxa.4995.1.1
publication LSID	lsid:zoobank.org:pub:35135437-CE87-4D3F-AEA4-9821A6AFDFCC
persistent identifier	https://treatment.plazi.org/id/03DE879D-2E60-FF96-FF70-FBD850549FF2
treatment provided by	Plazi
scientific name	Gabusibius
status	gen. nov.

Treatment

Gabusibius View in CoL mosi n. gen. n. sp.

( Figs. 33–48 View FIGURES 33–41 View FIGURES 42–48 ; 65–67 View FIGURES 62–70 ; 73–74 View FIGURES 71–76 ; 77 View FIGURE 77 ; Tab. 4)

Gabusibius mosi n. gen. n. sp., here described.

Holotype. Male. Comores, Mohéli, Chissioua Ouénéfou , plage de galets, -12.3924, 43.7072, 0.5m; 2.V.2010; S. Hugel leg. (Moheli.1 2010 098), MNHN (MNHN-EO-ENSIF12136). GoogleMaps

Allotype. Female. Comores, Mohéli, Ouallah II, Miremani , plage, -12.3468, 43.6674, 0.5m; 24.VIII.2010; S. Hugel & L. Desutter-Grandcolas leg. (2011 COM SH 187 View Materials ), MNHN (MNHN-EO-ENSIF12137). GoogleMaps

Paratypes, 5♂, 12♀. 1♂ same as holotype; S. Hugel leg. (Moheli.1 2010 097), Coll. SH . 1♀ same as holotype; S. Hugel leg. (Moheli.1 2010 099), Coll. SH .; 1♀ S. Hugel leg. (Moheli.1 2010 100), Coll. SH .; 1♀ S. Hugel leg. (Moheli.1 2010 101), Coll. SH .; 1♀ S. Hugel leg. (Moheli.1 2010 102), Coll. SH .; 1♀ S. Hugel leg. (Moheli.1 2010 103), Coll. SH .; 1♀ S. Hugel leg. (Moheli.1 2010 104), Coll. SH . 1♂ Comores, Mohéli, Ouallah II, Miremani, plage, -12.3468, 43.6674, 0.5m; 24.VIII.2010; S. Hugel & L. Desutter-Grandcolas leg. (2010 COM SH 186 View Materials ), Coll. SH GoogleMaps ; 1♀ same as allotype; S. Hugel & L. Desutter-Grandcolas leg. (2010 COM SH 188 View Materials ), Coll. SH ; 1♂, same as al- lotype, S. Hugel & L. Desutter-Grandcolas leg. ( LDG 338 ), in Chintauan-Marquier et al. 2016 molecular sampling LDG 028 as Tethella sp_ Com, MNHN (MNHN-EO-ENSIF3313) ; 2♂, same as allotype, S. Hugel & L. Desutter- Grandcolas leg. ( LDG 339 , LDG340 ), MNHN (MNHN-EO-ENSIF12138,12139) ; 5♀ same as allotype; S. Hugel & L. Desutter-Grandcolas leg., ( LDG342-346 ), MNHN (MNHN-EO-ENSIF12140, 12141, 12142, 12143, 12144) .

Other specimens (non type material). 3 specimens. 3 juveniles, same as the allotype, S. Hugel & L. Desutter- Grandcolas leg. ( LDG 341 , LDG347 , LDG 348 ), MNHN .

Distribution. South Western Indian Ocean, Comoros, Mwali (Mohéli)

Diagnosis. This species differs from Gabusibius ndzilu n. gen. n. sp. by its lighter color and from Gabusibius ? littoreus n. gen. n. comb. by the darker patterns. It differs from all Comorian species of Gabusibius n. gen. by male genitalia ( Figs. 65–67 View FIGURES 62–70 ): Pseudepiphallus with parallel sides converging in the last distal fifth; apex broadly rounded, not forming two lobes (dorsal view); apex not elevated distally (side view). Epi-ectophallic invagination exceeding anterior projection of endophallic sclerite; not spoon-shaped (unlike Gabusibius dzindzanu n. gen. n. sp.).

Description. In addition to generic characters. Color. Species with light background and black patterns ( Figs. 33–38 View FIGURES 33–41 ). In holotype, body background color light yellow with black patterns; light triangle on the face distinct, with broad basis, narrow between antennae. Legs background color light yellow, patterns very distinct and black. Extent of black patterns variable on paratypes. Male. Stridulatory file with 56 teeth (holotype). SGP ( Fig. 39 View FIGURES 33–41 ) broader than long (flattened). Genitalia ( Figs. 65–67 View FIGURES 62–70 ). Pseudepiphallus with parallel sides converging in the last distal fifth; apex broadly rounded, not forming two lobes (dorsal view); apex not elevated distally (side view). Epi-ectophallic invagination exceeding anterior projection of endophallic sclerite; anterior part moderately concave, not spoon-shaped. Rami very wide (side view), truncated anteriorly. Female. SGP hind margin shallowly concave ( Fig. 41 View FIGURES 33–41 ). OVP apex without distinct space between dorsal and ventral valves ( Fig. 41 View FIGURES 33–41 ).

Song. The song has been recorded at 10 am, 25°C in an open cave in the shore ( Figs. 42–48 View FIGURES 42–48 ). Two types of songs have been recorded simultaneously and specimens switched from one to the other song type. Calling specimens were not directly observed, it is, therefore, not possible to associate the song type with a peculiar behavior (courtship, call, etc.). The first harmonic of both songs peaks at 5.5–6.6 kHz. One type of song is made of verses organized in syllables made of pulses at high rate ( Fig. 44 View FIGURES 42–48 , 5 View FIGURES 1–8 verses): verses duration: 680±869 ms (222–5177 ms), gap between verses: 633±113 ms (369–812 ms), number of syllables per verse: 4.6±5.3 (2–33), syllable rate during verses: 162.1±17.9 ms (136.3–212.6 ms), pulses during syllables: 3.3±0.5 (3–4), pulse rate during syllables: 15.6±4.6 ms (9.1–24.9 ms). The other type of song is made of verses not organized in syllables and made of pulses at low rate ( Fig. 44 View FIGURES 42–48 , between 17.4 ms and 17.6 ms): verses duration: 116±40 ms (66–164 ms), gap between verses: 905±431 ms (273–1949 ms), pulses during syllables: 6.5±0.9 (5–8), pulse rate during syllables: 16.5±3.0 ms (10.0– 19.0 ms).

Biology. This species occurs on rocky beaches (mixed limestone and volcanic pebbles of small diameter). It can be observed by night hours, particularly at low tide. In Miremani, it can be observed by day hours in a shallow cave on the shore.