Dematochroma

Dematochroma is a genus of leaf beetles in the subfamily Eumolpinae. It is mostly distributed in New Caledonia, though it is also found on Lord Howe Island, Norfolk Island and Timor.[3] Adult beetles (usually less than 1 cm long) are often found at night feeding on leaves,[4] and the larvae eat roots.[5][3] It is possible the genus is polyphyletic or paraphyletic.[5]

Dematochroma
Dematochroma norfolkiana
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Chrysomelidae
Subfamily: Eumolpinae
Tribe: Eumolpini
Genus: Dematochroma
Baly, 1864[1]
Type species
Dematochroma picea[2]
Baly, 1864

The genus Thasycles Chapuis, 1874 was for a long time treated as a synonym of this genus, until it was reinstated as a valid genus in 2022.[6]

Species
  • Dematochroma antipodum (Fauvel, 1862)
  • Dematochroma antipodumoides Jolivet, Verma & Mille, 2010
  • Dematochroma cancellata (Samuelson, 2010)[7][8]
  • Dematochroma culminicola (Heller, 1916)
  • Dematochroma difficilis (Heller, 1916)
  • Dematochroma doiana Jolivet, Verma & Mille, 2007
  • Dematochroma helleri Jolivet, Verma & Mille, 2007
  • Dematochroma howensis Jolivet, Verma & Mille, 2006[3]
  • Dematochroma humboldtiana (Heller, 1916)
  • Dematochroma lepros (Heller, 1916)
  • Dematochroma maculifrons (Heller, 1916)
  • Dematochroma norfolkiana Jolivet, Verma & Mille, 2006[3]
  • Dematochroma picea Baly, 1864[1]
  • Dematochroma poyensis Jolivet, Verma & Mille, 2010
  • Dematochroma samuelsoni Jolivet, Verma & Mille, 2011[9]
  • Dematochroma shuteae Jolivet, Verma & Mille, 2006[3]
  • Dematochroma soldatii Jolivet, Verma & Mille, 2010
  • Dematochroma sylviae Jolivet, Verma & Mille, 2010
  • Dematochroma terastiomerus (Heller, 1916)
  • Dematochroma terminaliae Jolivet, Verma & Mille, 2010
  • Dematochroma theryi Jolivet, Verma & Mille, 2010
  • Dematochroma thyiana Jolivet, Verma & Mille, 2008[10]
  • Dematochroma timorense Jacoby, 1894[11]

The following species have been transferred to other genera:

  • Dematochroma foaensis Jolivet, Verma & Mille, 2007: transferred to Rhyparida[12]
  • Dematochroma fusca Jolivet, Verma & Mille, 2007: transferred to Thasycles[6]
  • Dematochroma laboulbenei (Montrouzier, 1861): transferred to Thasycles[6]
  • Dematochroma panieensis Jolivet, Verma & Mille, 2007:[13] transferred to Thasycles[6]
  • Dematochroma pilosa Jolivet, Verma & Mille, 2007: transferred to Dematotrichus[14]

References
  1. Baly, J. S. (1864). Descriptions of new genera and species of Phytophaga. Stationer's Hall: J.S. Baly.
  2. Reid, Chris A. M.; Shaw, Josh Jenkins; Jensen, Arn R. (2018). "The Australian Museum Lord Howe Island Expedition 2017—Coleoptera" (PDF). Technical Reports of the Australian Museum Online. 26: 53–67. doi:10.3853/j.1835-4211.26.2018.1706.
  3. Jolivet, P.; Verma, K.K.; Mille, C. (2006). "New species of Dematochroma from Lord Howe and Norfolk Islands (Coleoptera, Chrysomelidae, Eumolpinae)". Nouvelle Revue d'Entomologie. Nouvelle Série. 23 (4): 327–332.
  4. Morgan-Richards, M. (April 27, 2020). "Notes from a small Island – in the Pacific". Phoenix Lab - Evolutionary Ecology and Genetics. Archived from the original on 2020-05-27.
  5. Gómez-Zurita, J. (2017). "Taxonomic notes on New Caledonian Dematochroma samuelsoni Jolivet, Verma et Mille and D. difficilis (Heller) (Coleoptera, Chrysomelidae: Eumolpinae)" (PDF). Folia Entomologica Hungarica. 78: 77–82. doi:10.17112/FoliaEntHung.2017.78.77.
  6. Gómez-Zurita, J.; Pàmies-Harder, M. (2022). "Phylogenetic restitution and taxonomic revision of the New Caledonian endemic genus Thasycles Chapuis (Coleoptera: Chrysomelidae, Eumolpinae)". Zoologischer Anzeiger. 297: 16–41. doi:10.1016/j.jcz.2022.01.003.
  7. Samuelson, G. A. (2010). "Review of Taophila, a genus endemic to New Caledonia (Coleoptera : Chrysomelidae : Eumolpinae)" (PDF). Zootaxa. 2621: 45–62. doi:10.11646/zootaxa.2621.1.3.
  8. Gómez-Zurita, J.; Cardoso, A. (2014) [Published online 7 October 2013]. "Systematics of the New Caledonian endemic genus Taophila Heller (Coleoptera: Chrysomelidae, Eumolpinae) combining morphological, molecular and ecological data, with description of two new species". Systematic Entomology. 39 (1): 111–126. doi:10.1111/syen.12038. hdl:10261/115700.
  9. Jolivet, P.; Verma, K.K.; Mille, C. (2011). "New Eumolpinae from Mont Panié, New Caledonia (Coleoptera, Chrysomelidae)". Nouvelle Revue d'Entomologie. Nouvelle Série. 26 (4): 333–340.
  10. Jolivet, P.; Verma, K.K.; Mille, C. (2008). "New species of Dematochroma and Colaspoides from New Caledonia (Coleoptera, Chrysomelidae, Eumolpinae)". Nouvelle Revue d'Entomologie. Nouvelle Série. 24 (3): 195–200. ISSN 0374-9797.
  11. Jacoby, M. (1894). "Descriptions of new genera and species of phytophagous Coleoptera obtained by W. Doherty in the Malayan Archipelago". Novitates Zoologicae. 1: 267–330. doi:10.5962/bhl.part.24565.
  12. Gómez-Zurita, J. (2011). "Rhyparida foaensis (Jolivet, Verma & Mille, 2007), comb. n. (Coleoptera, Chrysomelidae) and implications for the colonization of New Caledonia". ZooKeys (157): 33–44. doi:10.3897/zookeys.157.1320. PMC 3253641. PMID 22303102.
  13. Jolivet, P.; Verma, K.K.; Mille, C. (2007). "New Genera and Species of Eumolpinae from New Caledonia (Coleoptera, Chrysomelidae)" (PDF). Revue Française d'Entomologie. Nouvelle Série. 29 (2–3): 77–92.
  14. Gómez-Zurita, J. (2022). "Integrative systematic revision of a new genus of Eumolpinae (Coleoptera: Chrysomelidae) endemic to New Caledonia: Dematotrichus gen. nov. and its numerous new hairy species". Systematics and Biodiversity. 20 (1): 1–28. doi:10.1080/14772000.2022.2084471.


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