Colossopus redtenbacheri ( Brongniart, 1897 ),

Ünal, Mustafa & Beccaloni, George W., 2017, Revision of the Madagascan genera Oncodopus Brongniart and Colossopus Saussure (Orthoptera: Tettigoniidae: Conocephalinae; Euconchophorini), with description of Malagasopus gen. nov., Zootaxa 4341 (2): 218-220

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Colossopus redtenbacheri ( Brongniart, 1897 )


Colossopus redtenbacheri ( Brongniart, 1897) 

( Figs. 6View FIGURES 1 – 9, 87–97View FIGURES 87 – 97, 111View FIGURES 109 – 111, 128View FIGURES 120 – 129) Orthoptera

Oncodopus redtenbacheri: Brongniart 1897: 208  ; Kirby 1906: 270; Otte 1997: 32.

Colossopus (Oncodopus) redtenbacheri: Saussure 1899: 628  .

Colossopus redtenbacheri: Karny 1912: 39  ; Otte 1997: 27.

Type locality. Madagascar. Lectotype male (in alcohol) (MNHN), here designated.

Redescription. Body size is intermediate between the other two members of the genus ( Table 4). Fastigium of vertex ( Fig. 87, 88View FIGURES 87 – 97) with three-pronged horn; upper 2 arms short and equal, slightly upcurved; lower one longer and situated between the upper arms; 1.4 times narrower than diameter of eye; its basal part 1.1 times wider than antennal scape. Fastigium of frons ( Fig. 88View FIGURES 87 – 97) with a large spiniform tooth. Face almost flattened with distinct tubercles some of which are like short spines. Pronotum ( Fig. 87, 88View FIGURES 87 – 97) slightly longer than wide, 3.4 times longer than its height; anterior margin convex, posterior margin with a deep angular median incision; prozona 1.5 times longer than metazona. Tegmina ( Fig. 87, 88View FIGURES 87 – 97) wavy, clearly visible from above, reaching 4/5 of the way down metanotum. Prothoracic auditory spiracle ( Fig. 90View FIGURES 87 – 97) almost rounded, almost fully covered by lateral lobes of pronotum. Mesothoracic auricle ( Fig. 90View FIGURES 87 – 97) oval, visible in lateral view, longer than wide, without ventral lobe; its inner gap long and elliptical. Prosternum with two, V-shaped spines, their apices not reaching to level of ventral margin of fore coxa. Fore coxa with a short dorsal spine. Fore femur ( Figs. 6View FIGURES 1 – 9, 87View FIGURES 87 – 97) with a large inner spine on anterio-lateral margin; with a large inner and a large outer apical spine ventrally; with 5–6 additional ventral spines on inner side. Fore tibia ( Fig. 87View FIGURES 87 – 97) with 5 inner and 4–7 outer spines ventrally, inner ones larger. Mid femur with 2– 4 and hind femur with 1–3 outer spines ventrally. Hind tibia with 5–7 dorsal spines on inner side, with a single inner apical spur dorsally; with 4 apical spurs ventrally, inner two slightly shorter than outer ones. Last abdominal tergite ( Fig. 91View FIGURES 87 – 97) twice as wide as its length, posterior margin with a deep narrow incision. Cercus ( Fig. 92View FIGURES 87 – 97) short, basal part broad, end of basal part with a distinct projection on inner margin; apical part narrower and slightly incurved, apex blunt, slightly rounded, with a small apical tooth. Subgenital plate ( Fig. 93View FIGURES 87 – 97) almost as long as its width, its styli slightly longer than depth of posterior incision of plate.

Female: Head as in male. Fastigium of vertex ( Figs. 94, 95View FIGURES 87 – 97) 1.4 times narrower than diameter of eye, 1.3 times wider than antennal scape. Pronotum ( Figs. 94, 95View FIGURES 87 – 97) with long, narrow prozona and wide, short metazona; prozona 1.4 times narrower and 4.3 times longer than metazona; anterior margin convex, posterior margin strongly concave. Tegmina strongly reduced to very small scale-like projections. Prothoracic auditory spiracle almost concealed by lateral lobe of pronotum. Mesothoracic auricle smaller than that of male, its inner gap narrow elliptical, not covered by pronotum. Fore tibia ( Fig. 94View FIGURES 87 – 97) with 5–6 ventral spines on outer side; mid femur with 1–4 and hind femur with 1– 4 outer spines ventrally; hind tibia with 6–7 dorsal spines on inner side, with an inner apical spur dorsally and 4 apical spurs ventrally. Last abdominal tergite broad and narrow, posterior margin with a small distinct median incision. Cercus short, conical, its apical part slightly incurved, pointed at apex. Subgenital plate ( Fig. 97View FIGURES 87 – 97) 3.5 times broader than long, with a broad rectangular median carina; lateral lobes with many transverse ridges. Ovipositor ( Fig. 96View FIGURES 87 – 97) straight, 1.5–1.6 times longer than hind femur and slightly longer than abdomen; apical part of ventral valve with small teeth.

Colour (dry specimens). Body with different shades of brown, mostly milky and light brown. Face darker, reddish brown; clypeus and labrum yellowish brown. Metazona of pronotum darker with reddish brown, prozona light brown. Fore tibia, anterior part of fore femur, knees of mid and hind legs and tarsi reddish brown, remaining parts of legs milky brown. Male tegmina yellowish brown. Abdominal tergites reddish brown, with a very narrow black stripe on hind margin in female. Basal part of ovipositor milky brown, its apical part light reddish brown.

Diagnosis. This species differs from C. grandidieri  in the structure of the pronotum, male cercus, shorter ovipositor, the ratios of ovipositor/hind femur and ovipositor/abdomen, clearly lighter body colour and smaller size. It differs from C. parvicavus  sp. nov. by the shape of the male pronotum, prothoracic auditory spiracle (which has a wide opening), the presence of ventral spines on the hind femur, and the ratios of ovipositor/hind femur and ovipositor/abdomen.

Material examined. Madagascar, 1867, 1 male (Lectotype)  , 1 female (Paralectotype) (leg. M. Grandidier) ( MNHN). Toliara Province, Andohahela National Park: Tsimelahy parcel, (-24.93, 46.65) [24 ° 55'48'' S, 46 ° 38'60'' E], 1.12.2004  , Coll. leg. G. W. Beccaloni, 1 male, 1 female ( NHMUK). Madagascar, Toliara Prov., Parc Nat. d’Andohahela, Forét d’Ambohibory, 1.7 km 61 ENE Tsimelahy, 36.1 km 308 NW Tolagnaro , 16  20.1.2002, 24 ° 55'48" S, 46 ° 38'44" E, 2 males, 1 female (Fisher, Griswold et al.), tropical dry forest; Castlot 0 0 6432 [locality unknown], 3 males, 3 females, 1 male nymph ( CAS).GoogleMaps 

Measurements (mm). Lectotype (male): Body length: 40; pronotum length: 10.6; width of pronotum: 10; fore femur length: 12.9; width of fore femur: 4.6; fore tibia length: 10.3; hind femur length: 14.4. See Table 4 for the range of measurement of the other specimens including females.

Distribution. South-eastern Madagascar ( Fig. 111View FIGURES 109 – 111). Toliara Province: Toliara, Andohahela.

Habitat. This species has been found in transitional tropical dry forest. The specimens collected by the second author were found under loose dead bark.

Phenology. Adults have been found in December and January.


Museum National d'Histoire Naturelle


Natural History Museum, London


California Academy of Sciences














Colossopus redtenbacheri ( Brongniart, 1897 )

Ünal, Mustafa & Beccaloni, George W. 2017

Oncodopus redtenbacheri:

Kirby, W. F. 1906: 270
Brongniart, C. 1897: 208

Colossopus (Oncodopus) redtenbacheri:

Saussure, H. 1899: 628

Colossopus redtenbacheri: Karny 1912 : 39

Karny, H. H. 1912: 39