Malagasopus, Ünal, Mustafa & Beccaloni, George W., 2017

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): 209-210

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gen. nov.

Malagasopus  gen. nov.

Type species. Malagasopus desutterae  sp. nov., here designated.

Description and Diagnosis. Body slightly depressed dorso-ventrally ( Fig. 62View FIGURES 60 – 69). Head wide. Fastigium of vertex ( Figs. 2View FIGURES 1 – 9, 60View FIGURES 60 – 69) relatively elongated, with 3 short spiniform arms all of which are slightly directed upwards. Face almost flattened, with distinct tubercles, four of which larger, spiniform. In M. desutterae  a large portion of the male tegmina is covered by the pronotum and only the apical parts are visible from above ( Fig. 60View FIGURES 60 – 69), while in the other species, M. meridianus  , a large apical portion of the male tegmina is visible from above ( Fig. 70View FIGURES 70 – 75). Mesothorax with a large seashell-shaped mesothoracic auricle. Tympanal organ on fore tibia slit shaped. Forelegs ( Figs. 60, 66View FIGURES 60 – 69) strongly developed, large, with very strong and large spines. Fore femur ( Figs. 5View FIGURES 1 – 9, 60View FIGURES 60 – 69) strongly widened, with a large inner spine on anterio-lateral margin; its outer and inner sides without apical spine ventrally. Hind tibia without apical spur dorsally ( Fig. 8View FIGURES 1 – 9). Last male tergite ( Fig. 63View FIGURES 60 – 69) long, with a narrow median incision on posterior margin. Ovipositor ( Fig. 68View FIGURES 60 – 69) slightly shorter than abdomen. For more details, see the descriptions of M. desutterae  sp. nov. and M. meridianus  sp. nov. below.

This new genus appears to be closely related to Oncodopus  judging by the structure of pronotum, fore femur, hind tibia and by the slightly protruding male tegmina in M. desutterae  . It differs from Oncodopus  in the tridentate fastigium of its vertex (one simple, elongated spine in Oncodopus  ), protruding male tegmina (almost covered by pronotum in Oncodopus  ), the elongated hind margin of the last male tergite (very short in Oncodopus  ) and the wider head especially in the female. It shares with Colossopus  the tridentate fastigium of the vertex, the elongated hind margin of the last male tergite and the strongly protruding tegmina of the male in one species, M. meridianus  . It differs from Colossopus  in the morphology of the fastigium of the vertex (with very short arms all of which are directed slightly upwards whilst in Colossopus  the longer 2 lateral arms are parallel and directed slightly downwards and the longer middle arm is upcurved), the shape of pronotum, the structure of the fore femur (the new genus lacks an apical spine on both sides ventrally whilst Colossopus  possesses such spines), the hind tibia without apical spur dorsally ( Colossopus  , has an apical spur dorsally on inner side), the shorter ovipositor and the wider head especially in female.

Etymology. The generic name is derived from “Malagasy” meaning Madagascan.


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