Morocera nigrifrons Ingrisch, 2023
publication ID |
https://doi.org/10.11646/zootaxa.5600.1.1 |
publication LSID |
lsid:zoobank.org:pub:C553BC28-88FF-481D-A639-2188B29DABE7 |
DOI |
https://doi.org/10.5281/zenodo.14970596 |
persistent identifier |
https://treatment.plazi.org/id/03A6895C-FF8B-FF8E-FF6C-D0DCFDF5101F |
treatment provided by |
Plazi (2025-03-05 07:58:06, last updated 2025-03-05 08:10:31) |
scientific name |
Morocera nigrifrons Ingrisch, 2023 |
status |
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Morocera nigrifrons Ingrisch, 2023 View in CoL
( Figs 70–72 View FIGURE 70 View FIGURE 71 View FIGURE 72 )
Specimens studied. Holotype male: Papua New Guinea, Morobe, Bulolo Gorge , wall outside station house, 28 viii 1981, coll. G.K. Morris (Depository NBC Leiden).
Other specimens studied: Papua New Guinea, Morobe: Wau, Mt. Missim , elev. 1120 m (7°10’S, 146°54’E), 13.ii.1963, coll. J. Sedlacek 1 ♀ ( BPBM) GoogleMaps ; same locality 28 viii 1981, coll. G.K. Morris (Depository NBC Leiden) GoogleMaps . PNG. nr Wau, W.E.I., 25 viii 1981, G.K. Morris (1 ♂) ; PNG, Mt. Missim , 18 viii 1981, G.K. Morris (1 ♀) (Depository NBC Leiden) .
Comments. Ingrisch (2023) elevated Gorochov’s (2016) subgenus Morocera to generic status. The type species of the genus is Morocera (Scytocera) loriae Griffini, 1908 ; a third species is M. peniculosa . The titillators of male Morocera nigrifrons have a very distinctive form (ibid, see his Fig. 2D View FIGURE 2 ): “…so far unique among Agraeciini (I [S.I.] have not seen a similar structure in any other species)”. Over their apical half the titillators curl longitudinally, their lateral edges overlapping into submembranous stilletto-like sheaths covered in fine spicules, enclosing tufts of long hairs.
Measurements. (1 male, 2 females in mm). body: male 21, female 21.0–21.5; pronotum: male 5.5, female 5.0–5.25; tegmen: male 11.5, female 11.5–12.5; hind femur: male 10.25, female 10.7; ovipositor: female 8.0–8.5.
Stridulation. This insect produces transient pulses ( Fig. 72D View FIGURE 72 ) grouped tightly together into trains ( Fig. 72A,B View FIGURE 72 ) with a pulse-train period of 66.5 ms at low 20° temperatures. “Stridulatory file on underside of left tegmen 1.70 mm long, with 78 teeth or 45.88 teeth per mm; about the last 20 teeth very small” ( Ingrisch 2023, his Fig. 2A View FIGURE 2 ). The number of file teeth agree reasonably with the number of pulses in the train): mean number of pulses for 10 calls of one male 65.2. Average duration of train 19.1 ms. The spectrum is a broad band ( Fig. 72C View FIGURE 72 ) between 20 and 38 kHz with an average carrier of 28.4 kHz.
Gorochov, A. V. (2016) Taxonomy of the katydids (Orthoptera: Tettigoniidae) from East Asia and adjacent islands. Communication 11. Far Eastern Entomologist, Vladivostok, 320, 1-26. https://doi.org/10.25221/fee.459.1
Ingrisch, S. (2023) New and little-known genera and species of Agraeciini from New Guinea. Zootaxa, 5249 (2), 190-212. https://doi.org/10.11646/zootaxa.5249.2.2
FIGURE 2. Scanning electron micrographs (SEMs) of A. immunis strigin parts: A) Left tegmen ventral aspect, straight file of broad teeth; B) Oblique foreshortened view of wide transverse vein backing scraper (arrow) on underside of right tegmen; C, D) File teeth close-ups show mid-breadth inflections and gullet nodules.
FIGURE 70. Morocera nigrifrons Ingrisch et al., 2023: A) holotype male lateral aspect; B) allotype female lateral aspect. Field name ‘black frons half tegmen’.
FIGURE 72. M. nigrifrons acoustic analysis, an example of transient stridulation: A) Three calls taken from a longer series; B) Train of multiple transient tooth events at higher time resolution; C) Spectrum mainly ultrasonic 20–35kHz, using ultrasoniclimited B&K mic ½” 4165; D) Time sample from pulse train of C showing sequential similarity of complex waveforms.
BPBM |
Bishop Museum |
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