Friday, November 3, 2017

[Entomology • 2017] Malagasopus gen. nov. • Revision of the Madagascan genera Oncodopus and Colossopus (Orthoptera: Tettigoniidae: Conocephalinae; Euconchophorini)


Malagasopus desutterae
Ünal & Beccaloni, 2017
  

Abstract

The endemic Madagascan genera Oncodopus Brongniart and Colossopus Saussure are revised using museum specimens, including the types, and recently collected material. A new genusMalagasopus gen. nov., and seven new speciesMalagasopus desutterae sp. nov.Malagasopus meridianus sp. nov.Oncodopus janetae sp. nov.Oncodopus brongniarti sp. nov.Oncodopus saussurei sp. nov., Oncodopus soalalaensis sp. nov. and Colossopus parvicavus sp. nov. are described. Lectotypes are designated for Oncodopus zonatus Brongniart, 1897 and Colossopus redtenbacheri (Brongniart, 1897). A new term, mesothoracic auricle, is proposed for a structure on the episternum of the mesothorax. A tabulated key to the genera and keys to the species are presented. All species are described and diagnosed, and their phylogenetic relationships, geographical distributions, habitat preferences and phenologies are documented. The life history of Colossopus grandidieri is described, and the unusual possible mate-guarding behaviour of several species is discussed. Maps showing the distribution of the species are presented, as too are 57 photographs of museum specimens, 51 drawings of morphological characters, 17 photographs of living specimens and one habitat photograph.

Keywords:  Orthoptera, Madagascar, Conocephalinae, OncodopusColossopusMalagasopus, revision, new genus, new species, lectotype, taxonomy, distribution, mate-guarding


Family: Tettigoniidae Krauss, 1902
Subfamily: Conocephalinae Burmeister, 1838

Tribe: Euconchophorini Gorochov, 1988

Oncodopus Brongniart, 1897
Type species: Oncodopus zonatus Brongniart, 1897


113 Oncodopus janetae, adult female, Mangatsiaka parcel, Andohahela National Park, Toliara Province. 30.11.2004. © S. Stammers, 114 Oncodopus brongniarti, adult female, near village of Mangily, Toliara Province. 11.11.2004. © G.W. Beccaloni, 115 Oncodopus brongniarti, threat display of adult female, near village of Mangily, Toliara Province. 30.12.2015. © M. Bader, 117 Oncodopus saussurei, adult female, beside R.N. 7 south of Ambohimahasoa, Fianarantsoa Province. 13.11.2004. © S. Stammers



FIGURES 112-119. Living specimens.
112 Oncodopus zonatus, adult male, natural resting posture, Zombitse-Vohibasia National Park, Toliara Province. 17.11.2004. © G.W. Beccaloni, 113 Oncodopus janetae, adult female, Mangatsiaka parcel, Andohahela National Park, Toliara Province. 30.11.2004. © S. Stammers, 114 Oncodopus brongniarti, adult female, near village of Mangily, Toliara Province. 11.11.2004. © G.W. Beccaloni, 115 Oncodopus brongniarti, threat display of adult female, near village of Mangily, Toliara Province. 30.12.2015. © M. Bader, 116 Oncodopus brongniarti, adult pair, natural resting postures, Belo Sur Mer, Toliara Province. 22.11.2007. © J. Beccaloni, 117 Oncodopus saussurei, adult female, beside R.N. 7 south of Ambohimahasoa, Fianarantsoa Province. 13.11.2004. © S. Stammers, 118 Malagasopus desutterae, male nymph, 80 km north of Tulear, near village of Ankililoaka, Toliara Province. 6.2008 © O. Pronk, 119 Colossopus grandidieri, eggs: newly laid eggs lower right; older (swollen) eggs upper left. Captive stock. © G.J.N. González. 

Malagasopus desutterae, male nymph, 80 km north of Tulear, near village of Ankililoaka, Toliara Province. 6.2008
photo: O. Pronk

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

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


FIGURES 120-129. Living specimens.
  120 Colossopus grandidieri, older (swollen) egg. Captive stock. © G.J.N. González, 121 Colossopus grandidieri, recently hatched 1st instar nymph. Captive stock. © G.J.N. González, 122 Colossopus grandidieri, late instar male nymph. Captive stock. © G.J.N. González, 123 Colossopus grandidieri, final instar female nymph. Captive stock. © G.J.N. González, 124 Colossopus grandidieri, adult female. Captive stock. © G.J.N. González, 125 Colossopus grandidieri, threat display of adult female, near village of Mangily, Toliara Province. 15.3.2015. © M. Bader, 126 Colossopus grandidieri, adult male, near village of Mangily, Toliara Province. 19.11.2004. © G.W. Beccaloni, 127 frontal view of head of the previous individual. © G.W. Beccaloni,
128 Colossopus redtenbacheri, adult female, Berenty Private Reserve, Toliara Province, 4.12.2004. © G.W. Beccaloni, 129 Spiny forest near village of Mangily, Toliara Province in November 2004, close to where the second author collected Colossopus grandidieri and Oncodopus brongniarti. © G.W. Beccaloni. 

Colossopus Saussure, 1899
Type species: Colossopus grandidieri Saussure, 1899.


  

Mustafa Ünal and George William Beccaloni. 2017. Revision of the Madagascan genera Oncodopus Brongniart and Colossopus Saussure (Orthoptera: Tettigoniidae: Conocephalinae; Euconchophorini), with description of Malagasopus gen. nov. Zootaxa. 4341(2); 193–228.  DOI:  10.11646/zootaxa.4341.2.2

1 comment:

  1. The first photo shows an individual that oddly resembles a crayfish to me. Interesting post, keep up the good work!

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