Horatosphaga serrifera Schaum, 1853

Naskrecki, Piotr & Guta, Ricardo, 2019, Katydids (Orthoptera: Tettigoniidae) of Gorongosa National Park and Central Mozambique, Zootaxa 4682 (1), pp. 1-119: 87-88

publication ID

https://doi.org/10.11646/zootaxa.4682.1.1

publication LSID

lsid:zoobank.org:pub:430B98EF-BFCB-4608-A562-DEFA9539C8B2

DOI

http://doi.org/10.5281/zenodo.5629557

persistent identifier

http://treatment.plazi.org/id/03D8878E-FC27-D96C-CCFE-5185FBE232AF

treatment provided by

Plazi

scientific name

Horatosphaga serrifera Schaum, 1853
status

 

Horatosphaga serrifera Schaum, 1853  

http://lsid.speciesfile.org/urn:lsid: Orthoptera   .speciesfile.org:TaxonName:10929

( Figs. 5I View FIGURE 5 , 32 View FIGURE 32 A–D, 52G–I)

Diagnostic remarks. A large, long-legged, and strongly sexually dimorphic katydid. Males have long and wide tegmina with a characteristic venation; they are good fliers ( Fig. 32C View FIGURE 32 ). Females have narrow tegmina that do not reach the hind knees and are incapable of flight ( Fig. 32D View FIGURE 32 ). The tympana on the front tibia are articulate (enclosed in cuticular folds) on both sides, the male cerci are simple, with a small, apical inner spine ( Fig. 32B View FIGURE 32 ), and the ovipositor is long, curved, and with distinct serration at the apical portions of both valvulae ( Fig. 32A View FIGURE 32 ).

Bioacoustics. As discussed by Hemp et al. (2010), the call of Acrometopini   is often complex, making it difficult to apply the traditional terminology of syllables and echemes to describe it. For this reason, it is preferable to use the term ‘element’ for a more or less fixed sequence of sound events, without attempting to distinguish the sections of the call are the products of full closing or opening of the stridulatory structures.

H. serrifera   males call from elevated perches and every few minutes fly to another perch, usually a tall her- baceous plant, and start a new bout of calling. The call, lasting on average 1.6–3.0 seconds, is divided into two sections, each with a different frequency spectrum ( Fig. 52G View FIGURE 52 ). The first section is a uniform train of similar, short syllables produced at the rate of 60–80/sec; mean syllable duration is 0.0094 s (SD=0.001325, n=75); the peak frequency of this section of the call is 4.7–9.9 kHz ( Figs. 52H, I View FIGURE 52 ). The first section, which lasts approximately 0.1– 1.0 s, is immediately followed by a more complex section with multiple elements of various duration; some elements resemble long echemes with similar peak frequency as the first section, while others are short clicks (mean duration 0.011 s) with the peak frequency of 12.9–14.0 kHz ( Figs. 52H, I View FIGURE 52 ).

Distribution and natural history. H. serrifera   , originally described from an unknown location in Mozambique ( Schaum 1853) and then again, as Pantolepta multivenosa   , from Nova Chupanga by Chopard (1935), is a species widely distributed in sub-Saharan Africa. It has been recorded from the Democratic Republic of the Congo, Angola, Zambia, Kenya, Zimbabwe, Namibia, South Africa, and Mozambique ( Ragge 1960). In Mozambique adults of H. serrifera   are found only during the wet season, between January and April. They are found on tall herbaceous plants and bushes, occasionally on grass. In Gorongosa   remains of males, but not females, of this species are frequently found under roosts of Egyptian whispering bats ( Nycteris thebaica Geoffroy, 1881   ), suggesting that the bats use the male stridulation to locate their prey.

Measurements (3 males, 3 females). body w/wings: male 49–51 (501), female 44–48 (46.72.3); body w/o wings: male 22–24 (23.31.2), female 21–34 (29.77.5); pronotum: male 7–8 (7.3.6), female 7–9 (81); tegmen: male 40–41 (40.7.6), female 36–39 (371.7); hind femur: male 37–39 (381), female 34–35 (34.3.6); ovipositor: 13–15 (141) mm.

Material examined (41 specimens). Mozambique: Nova Chupanga, near Chemba , 1–28.ii.1929 — 1 male (holotype of Pantolepta multivenosa   ) ( MNHN)   ; coll. Peters— 1 female (holotype of Horatosphaga serrifera   );— 1 male (holotype) ( ZMBH)   ; Cabo Delgado, Macomia, Quirimbas N.P., Muanona , elev. 124 m (-12.15117, 40.19542), 24– 25.i.2014, coll. P. Naskrecki, H. Farooq, B. Nassongole—1 nymph female ( UNL) GoogleMaps   ; Sofala, Coutada 12, Nyago hunting camp, elev. 70 m (-18.660767, 35.455603), 8–16.iv.2016, coll. P. Naskrecki & J. Guyton— 2 females, 3 males GoogleMaps   ; Cheringoma, Coutada 12, Chironde camp, elev. 156 m (-18.32780, 35.35799), 25.iii.–4.iv.2017, coll. P. Naskrecki, J. Guyton & M. Castene— 1 female GoogleMaps   ; nr. Codzo ( Khodzue ), cave and nearby, elev. 216 m (-18.564, 34.872222), 14– 25.iv.2017, coll. P. Naskrecki— 1 female GoogleMaps   ; Gorongosa   , GNP, Chitengo , elev. 40 m (-18.9806, 34.351567), 1–25.i.2017, coll. R. Guta— 1 male GoogleMaps   ; Coutada 12, Camp 2, 7km north of Pawue Village , (-18.43151, 035.35499), 17.iii.2018, coll. P. Naskrecki— 1 female ( EOWL) GoogleMaps   ; GNP, Bunga Inselberg, Camp 1, nr. Bunga ranger outpost, elev. 75 m (-18.59989, 34.33686), 21.iv.–5.v.2015, coll. P. Naskrecki— 1 female ( MCZ) GoogleMaps   ; GNP, Chitengo, Wilson Laboratory , elev. 48 m (-18.977722, 34.351333), 1–15.iii.2018, coll. N. Vicente— 1 male GoogleMaps   ; GNP, nr. Bunga inselberg, elev. 22 m (-18.5775, 34.336944), 2.iii.2015, coll. P. Naskrecki— 1 male ( EOWL) GoogleMaps   ; Gorongosa   Dist., Center for Environmental Conservation , elev. 119 m (-18.95472, 34.1775), 16.iii.2013, coll. P. Naskrecki— 2 females GoogleMaps   ; same locality, 16.iii.2013, coll. P. Naskrecki— 1 female GoogleMaps   ; same locality, 14.ii.2014, coll. P. Naskrecki— 1 male ( MCZ) GoogleMaps   ; same locality, 19–21.ii.2014, coll. R. Guta & T. Castigo— 1 male ( UEMM) GoogleMaps   ; GNP, Chitengo , elev. 28 m (-18.98, 34.352639), 30.i.–12.ii.2014, coll. P. Naskrecki— 1 male   ; GNP, Chitengo , elev. 29 m (-18.98194, 34.35122), 30.i.–13.ii.2014, coll. P. Naskrecki— 4 females, 3 males ( MCZ) GoogleMaps   ; same locality, 11–25.ii.2014, coll. R. Guta & T. Castigo— 1 male ( EOWL) GoogleMaps   ; GNP, Explore Gorongosa   camp, elev. 23 m (-18.92092, 34.36575), 14.v.2012, coll. P. Naskrecki— 1 female GoogleMaps   ; GRP, Picada 1, nr. P3, elev. 25 m (-18.94906, 34.37336), 6.ii.2014, coll. P. Naskrecki, F. Artur & R. Guta (212)— 1 male GoogleMaps   ; Waterfall Camp , (-19.03087, 34.67635), 22.iii.2013, coll. P. Naskrecki— 2 females GoogleMaps   ; same locality, 22.iii.2013, coll. P. Naskrecki— 2 females ( MCZ) GoogleMaps   ; Gorongosa   Distr., Chitengo , (-18.981944, 34.351222), 2–28.ii.2015, coll. R. Guta— 1 male GoogleMaps   ; GRP, E.O. Wilson Lab Chitengo , (-18.9783, 34.3514), 9.ii.–4.iii.2015, coll. P. Naskrecki & R. Guta— 1 female, 1 male GoogleMaps   ; same locality, 21.iv.–31.i.2015, coll. Naskrecki Guta— 1 female, 1 nymph ( EOWL) GoogleMaps   .

MNHN

Museum National d'Histoire Naturelle

UNL

Centro de Estratigrafia e Paleobiologia da Universidade Nova de Lisboa

MCZ

Museum of Comparative Zoology