Genus of leaf beetles
Dematochroma is a genus of leaf beetles in the subfamily Eumolpinae .[ 3] It is mostly distributed in New Caledonia , though it is also found on Lord Howe Island , Norfolk Island , Timor and Vanuatu .[ 4] [ 5] Adult beetles (usually less than 1 cm long) are often found at night feeding on leaves,[ 6] and the larvae eat roots.[ 7] [ 4]
Phylogeny
Recent phylogenetic analyses of Eumolpinae of the south Pacific suggest that Dematochroma is paraphyletic : the type species, the Lord Howe endemic D. picea , is placed in a clade including New Caledonian endemic genera Taophila and Tricholapita , which is sister to another clade including other New Caledonian Eumolpinae genera, the New Caledonian species of Dematochroma as well as the New Zealand endemic Atrichatus . Because of these findings, Gómez-Zurita and Pàmies-Harder (2022) preferred to transfer the New Caledonian species of Dematochroma to other genera.[ 8] For instance, the genus Thasycles Chapuis, 1874 , which was for a long time treated as a synonym of Dematochroma , was reinstated as a valid genus,[ 8] and a new genus Dematotrichus was established for Dematochroma pilosa and closely related species.[ 9]
Species
Dematochroma antipodum (Fauvel , 1862) – New Caledonia
Dematochroma antipodumoides Jolivet, Verma & Mille, 2010 – Vanuatu
Dematochroma culminicola (Heller , 1916) – New Caledonia
Dematochroma difficilis (Heller , 1916) – New Caledonia
Dematochroma doiana Jolivet, Verma & Mille, 2007 – New Caledonia
Dematochroma helleri Jolivet, Verma & Mille, 2007 – New Caledonia
Dematochroma howensis Jolivet, Verma & Mille, 2006 [ 4] – Lord Howe Island
Dematochroma humboldtiana (Heller , 1916) – New Caledonia
Dematochroma lepros (Heller , 1916) – New Caledonia
Dematochroma maculifrons (Heller , 1916) – New Caledonia
Dematochroma norfolkiana Jolivet, Verma & Mille, 2006 [ 4] – Norfolk Island
Dematochroma picea Baly , 1864[ 1] – Lord Howe Island
Dematochroma samuelsoni Jolivet, Verma & Mille, 2011 [ 10] – New Caledonia
Dematochroma shuteae Jolivet, Verma & Mille, 2006 [ 4] – Norfolk Island
Dematochroma sylviae Jolivet, Verma & Mille, 2010 – New Caledonia
Dematochroma terastiomerus (Heller , 1916) – New Caledonia
Dematochroma terminaliae Jolivet, Verma & Mille, 2010 – New Caledonia
Dematochroma theryi Jolivet, Verma & Mille, 2010 – New Caledonia
Dematochroma thyiana Jolivet, Verma & Mille, 2008 [ 11] – New Caledonia
Dematochroma timorense Jacoby , 1894[ 12] – Timor
The following species are synonyms:
The following species have been transferred to other genera:
Dematochroma cancellata (Samuelson, 2010) :[ 13] [ 14] transferred to Dumbea , as synonym of Dumbea striata Jolivet, Verma & Mille, 2007 [ 3]
Dematochroma foaensis Jolivet, Verma & Mille, 2007 : transferred to Rhyparida [ 15]
Dematochroma fusca Jolivet, Verma & Mille, 2007 : transferred to Thasycles [ 8]
Dematochroma laboulbenei (Montrouzier , 1861) : transferred to Thasycles [ 8]
Dematochroma panieensis Jolivet, Verma & Mille, 2007 :[ 16] transferred to Thasycles [ 8]
Dematochroma pilosa Jolivet, Verma & Mille, 2007 : transferred to Dematotrichus [ 9]
References
^ a b Baly, J. S. (1864). Descriptions of new genera and species of Phytophaga . Stationer's Hall: J.S. Baly.
^ 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 .
^ a b c Platania, L.; Gómez-Zurita, J. (2023). "Current knowledge on the diversity of Eumolpinae (Coleoptera, Chrysomelidae) in New Caledonia" . ZooKeys (1177): 41– 55. doi :10.3897/zookeys.1177.101293 . hdl :10261/337235 . PMC 10483691 . PMID 37692319 .
^ a b c d e 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.
^ a b Gómez-Zurita, J. (2024). "Additions and taxonomic remarks on the Eumolpinae (Coleoptera: Chrysomelidae) from Vanuatu and the Solomon Islands" (PDF) . Journal of Tropical Coleopterology . 5 (1): 1– 27.
^ 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.
^ 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 .
^ a b c d e 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 . hdl :10261/260681 .
^ a b 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 . hdl :10261/276455 .
^ 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.
^ 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 .
^ 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 .
^ 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 .
^ 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 . S2CID 86311766 .
^ 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 .
^ 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.
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