Enyaliopsis ephippiatus ( Gerstaecker, 1869 )

Heller, Klaus-Gerhard, Chobanov, Dragan, Warchałowska-Śliwa, Elżbieta & Hemp, Claudia, 2022, Review of song patterns and sound production in armoured ground crickets (Orthoptera: Tettigoniidae: Hetrodini) with karyological data and taxonomic notes, Zootaxa 5120 (4), pp. 451-481 : 466-467

publication ID	https://doi.org/ 10.11646/zootaxa.5120.4.1
publication LSID	lsid:zoobank.org:pub:B6FBF44E-78CB-4ACA-9F58-1174A9E59926
DOI	https://doi.org/10.5281/zenodo.6401854
persistent identifier	https://treatment.plazi.org/id/DF5687C2-FFF9-416B-CAD1-EE2AFB29251C
treatment provided by	Plazi
scientific name	Enyaliopsis ephippiatus ( Gerstaecker, 1869 )
status

Treatment

Enyaliopsis ephippiatus ( Gerstaecker, 1869) View in CoL

Enyaliopsis spec. 1 (near ephippiatus View in CoL )

E. ephippiatus is known only from Northern Tanzania and southern Kenya. Its type locality ( Ugono in Tanzania) could not be localized by Glenn (1991), but refers to a mountain range now more commonly called North Pare Mountains (formerly Ugweno Mts.) .

When analyzing the songs it turned out that here two species exist, mainly differing in song (see below). Enyaliopsis ephippiatus has song type A, Enyaliopsis sp. 1 (near ephippiatus ) song type B. Both song morphs are similar in titillator shape but differ in geographic range, morph A more northern than morph B. E. near ephippiatus from the South Pare Mts, situated adjacent to the North Pare Mts and E. ephippiatus from the North Pares and the Mt Kilimanjaro area are morphologically very similar. However, male specimens of E. ephippiatus have a narrower pronotum than E. near ephippiatus males. Females of E. ephippiatus are generally larger but more slenderly built than females of E. sp. 1 (near ephippiatus ).

Reference: Hemp 2021

Material examined: Song type A: 2 males [CH7737 (SR, SF), 1 male ( TI)], TANZANIA, Rau Forest near Moshi, Mt Kilimanjaro, Kilimanjaro Region, 3° 22’ 32.4“S, 37° 21’ 48.1”E, 1 iii – 15 iv 2014, leg. C. Hemp GoogleMaps ; 2 males [ CH 7848 (SR, CHR), CH 7850 (SR, CHR)] , 1 female [CH7849 ( CHR)], TANZANIA, Rau Forest near Moshi, Mt Kilimanjaro, Kilimanjaro Region, 1–31 viii 2014, leg. C. Hemp ; 4 males (SR), TANZANIA, Rau Forest near Moshi, Mt Kilimanjaro, Kilimanjaro Region, November 2021, leg. C. Hemp ; 1 male (SR), 1 male ( TI), TANZANIA, Lembeni, North Pare Mts , Kilimanjaro Region, July 2014, February 2015, leg. C. Hemp ; 1 male ( TI), TANZANIA, Mwanga, North Pare Mts , Kilimanjaro Region, February 2016, leg. C. Hemp.

Song type B: 1 male [CH8670 (SR, SF, CHR)], TANZANIA, Eastern Arc Mountains, South Pare Mts, Mt Vumari, Kilimanjaro Region 1–31 iii 2019, leg. C. Hemp ; 1 male (SR, TI), TANZANIA, South Pare Mts, Mt Mwala , Kilimanjaro Region, 2017, leg. C. Hemp ; 1 male [CH8669 (SR, CHR)], TANZANIA, South Pare Mts, Mt Mwala , Kilimanjaro Region, 1–31 iii 2019, leg. C. Hemp.

Bioacoustics. Tegmina ( Fig. 3 View FIGURE 3 ), stridulatory file ( Table 1 View TABLE 1 ) and spectrum of the song ( Fig. 6 View FIGURE 6 ) do not show large differences to the typical Hetrodini pattern. The file of the holotype (photo in OSF) is very similar to that of a male from group A. The calling song consists of long series of syllables (song type B 3 in Fig. 5 View FIGURE 5 ). These series are often produced in small groups with the first series longer than the following (9 s vs. 4–5-s). The two song types differ in SRR by a factor of about two; 35–45 Hz at 20–24ºC in type A (n = 8 specimens) and 20–24 Hz at 21–25ºC in type B (n = 3 specimens; Fig. 8D, E View FIGURE 8 ; see Table 2 View TABLE 2 ).

Genitalia. According to Glenn (1991), the titillator of the holotype is lost. All of our four studied males show a slender, relatively long central part of the genitalic sclerites ( Fig. 9D, E View FIGURE 9 ), ending in a blunt tip with a hook on both sides. In general shape, it is thus similar to the other species of the obuncus group (see Glenn 1991), but differs by missing additional tubercles on the tip of the titillator beside the lateral hooks.

Chromosomes. The karyotypes of both species are very similar: 2n = 27 (26 + X0) male and 28 (26 + XX) female, FN = 29/30; pair 1 metacentric, 2–13 and X chromosome acrocentric (4 males, 1 female and 1 male described earlier [ Grzywacz et al. 2015]: CH 7737); thick C-positive in large/medium and thin C-bands in short-sized pairs paracentromeric bands, thick distal C-block in pairs 3, 4 and the X chromosome ( Fig. 12D View FIGURE 12 ).