Demotina Explained

Demotina is a genus of leaf beetles in the subfamily Eumolpinae. There are over 50 described species in Demotina. The genus is native to Asia, Australia and Oceania, though one species (Demotina modesta) is an adventive species in the southeastern United States in North America. Some species are known to be parthenogenetic.

Species of Demotina described from Fiji and Vanuatu differ from the Asian species by the presence of emarginations on the middle and hind legs, a characteristic of the Typophorini. Because of this and other differences, the species from Fiji and Vanuatu are provisionally transferred to the genus Parademotina by Gómez-Zurita (2024).^[1]

Species

These species belong to the genus Demotina:

Asian species:^{[2] [3] [4] [5]}

• Demotina albomaculata Tan, 1992 – China
• Demotina alni Chûjô, 1956

^g[6] – Taiwan

• Demotina andrewesi Jacoby, 1904^[7] – India
• Demotina atra (Pic, 1923)^[8] – China, Vietnam
• Demotina aurosquama Chûjô, 1961 – Japan
• Demotina bicoloriceps Tan, 1992 – China
• Demotina bipunctata Jacoby, 1885^[9] – Japan
• Demotina bivittata Baly, 1867^[10] – Indonesia
• Demotina bowringii Baly, 1863 – China, Thailand, Laos, Vietnam
• Demotina ceylonensis Jacoby, 1887^[11] – Sri Lanka
• Demotina collaris Eroshkina, 1992^[12] – Vietnam
• Demotina costata Eroshkina, 1992^[12] – Vietnam
• Demotina decorata Baly, 1874^[13] – Japan, South Korea
• Demotina decoratella Chûjô, 1956

^g[6] – Taiwan

• Demotina elegans Chûjô & Shirôzu, 1955

^g – Japan

• Demotina fasciata Baly, 1874^[13] – China, Japan, South Korea
• Demotina fasciculata Baly, 1874^[13] – Japan, South Korea
• Demotina flavicornis Tan & Zhou in Zhou & Tan, 1997 – China
• Demotina gansuica Chen, 1940 – China
• Demotina grisea Baly, 1867^[10] – Malaysia
• Demotina imasakai Isono, 1990^[14] – Japan
• Demotina inaequalis (Pic, 1927) – China
• Demotina incostata Takizawa, 1978

^g – Taiwan

• Demotina inhirsuta (Pic, 1923)^[8] – China, Vietnam
• Demotina jansoni Baly, 1867^[10] – Indonesia
• Demotina javanensis Bryant, 1946^[15] – Indonesia
• Demotina lateralis Gahan, 1900^[16] – Christmas Island
• Demotina lewisi Jacoby, 1887^[11] – Sri Lanka
• Demotina major Chûjô, 1958 – Japan
• Demotina medvedevi Moseyko, 2005^[17] – Vietnam
• Demotina medvedeviana Moseyko, 2006^[18] – Vietnam
• Demotina minuta Jacoby, 1908^[19] – Nepal, India
• Demotina minutella Moseyko, 2005^[17] – Vietnam
• Demotina modesta Baly, 1874

^{i c g b[13]} – Taiwan, Japan, Nepal, South Korea, United States (introduced)

• Demotina montana Chûjô, 1956

^g[6] – Taiwan

• Demotina multinotata Pic, 1929 – China
• Demotina murina Baly, 1867^[10] – Malaysia, Indonesia
• Demotina ornata Baly, 1867^[10] – Indonesia
• Demotina parvula Baly, 1867^[10] – Indonesia
• Demotina pauperata Baly, 1867^[10] – Indonesia
• Demotina piceonotata Pic, 1929 – China
• Demotina postica Chen, 1935 – China
• Demotina pseudoimasakai Park, 2013^[20] – South Korea
• Demotina pustulosa Chen, 1935 – China
• Demotina quercicola Takizawa, 2017^[21] – Malaysia
• Demotina regularis Eroshkina, 1992^[12] – Vietnam
• Demotina rufonotata (Pic, 1924)^[22] – Vietnam
• Demotina rufopicea Baly, 1867^[10] – Indonesia
• Demotina rugicollis Baly, 1867^[10] – Indonesia
• Demotina sapensis Romantsov & Moseyko, 2019^[22] – Vietnam
• Demotina sasakawai Nakane & Kimoto, 1959 – Japan
• Demotina serriventris Isono, 1990

^g[14] – China, Japan, Nepal

• Demotina silvatica Eroshkina, 1992^[12] – Vietnam
• Demotina squamosa Isono, 1990^[14] – Japan
• Demotina sumatrana Jacoby, 1896^[23] – Indonesia
• Demotina thei Chen, 1940 – China
• Demotina thoracica Jacoby, 1887^[11] – Sri Lanka
• Demotina tuberosa Chen, 1935 – China, Japan, Laos, Vietnam
• Demotina vernalis Isono, 1990^[14] – Japan
• Demotina vietnamica Eroshkina, 1992^[12] – Vietnam
• Demotina wallacei Baly, 1867^[10] – Indonesia
• Demotina weisei Eroshkina, 1992^[12] – Vietnam

Australian species:

• Demotina australis (Weise, 1923)

Oceanian (Fiji/Vanuatu) species:^{[24] [25] [26] [27]}

• Demotina albonotata Bryant, 1931 – Fiji
• Demotina bifasciata Bryant, 1957 – Fiji
• Demotina cylindricollis Gressitt, 1957 – Fiji
• Demotina difficilis Bryant, 1936 – Vanuatu
• Demotina dissimilis Bryant, 1931 – Fiji
• Demotina evansi Bryant, 1931 – Fiji
• Demotina flavipes Bryant, 1936 – Vanuatu
• Demotina fragilis Gressitt, 1957 – Fiji
• Demotina fulva Bryant, 1931 – Fiji
• Demotina glochidiona Gressitt, 1957 – Fiji
• Demotina irregularis Bryant, 1957 – Fiji
• Demotina metallica Bryant, 1957 – Fiji
• Demotina nodosa Bryant, 1957 – Fiji
• Demotina obscurata Bryant, 1931 – Fiji
• Demotina pallipes Bryant, 1957 – Fiji
• Demotina pubescens Gressitt, 1957 – Fiji
• Demotina rugosata Gressitt, 1957 – Fiji
• Demotina striata Bryant, 1957 – Fiji
• Demotina veitchi Bryant, 1931 – Fiji
• Demotina vitiensis Bryant, 1931 – Fiji

Synonyms:

• Demotina balyi Jacoby, 1889: moved to Hyperaxis^[28]
• Demotina minuta Eroshkina, 1992 (preoccupied by D. minuta Jacoby, 1908):^[12] renamed to Demotina minutella Moseyko, 2005^[17]
• Demotina nigrita Eroshkina, 1992:^[12] moved to Hyperaxis^[29]
• Demotina punctata Takizawa, 1978: synonym of Demotina montana Chûjô, 1956
• Demotina serraticollis Baly, 1867:^[10] moved to Pseudometaxis

Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net

Further reading

• Book: Catalog of the leaf beetles of America north of Mexico (Coleoptera: Megalopodidae, Orsodacnidae and Chrysomelidae, excluding Bruchinae). 2003. Riley . Edward G.. Clark . Shawn M.. Seeno . Terry N.. The Coleopterists' Society. Special Publication No. 1. 978-0-9726087-1-8.
• Book: Catalogue of Palaearctic Coleoptera, Volume 6: Chrysomeloidea. 2013. Lobl . I.. Smetana . A.. Apollo Books. 978-90-04-26091-7.

Notes and References

1. Gómez-Zurita. J.. 2024. Additions and taxonomic remarks on the Eumolpinae (Coleoptera: Chrysomelidae) from Vanuatu and the Solomon Islands. Journal of Tropical Coleopterology. 5. 1. 1–27.
2. Book: Moseyko. A. G.. Sprecher-Uebersax. E.. 2010. Eumolpinae. https://books.google.com/books?id=qt8zDwAAQBAJ&pg=PA620. Löbl. I.. Smetana. A.. Catalogue of Palaearctic Coleoptera. Volume 6. Chrysomeloidea. Stenstrup, Denmark. Apollo Books. 619–643. 978-87-88757-84-2.
3. Book: Mohamedsaid, M. S.. 2004. Catalogue of the Malaysian Chrysomelidae (Insecta: Coleoptera). 1–239. Sofia. Pensoft Publishers. Pensoft Series Faunistica. 36. 9546422010. 1312-0174.
4. Chûjô. M.. Kimoto. S.. 1961. Systematic Catalog of Japanese Chrysomelidae (Coleoptera). Pacific Insects. 3. 1. 117–202.
5. Isono. M.. 1990. A revision of the genus Demotina (Coleoptera, Chrysomelidae) from Japan, the Ryukyus, Taiwan and Korea, II. Japanese Journal of Entomology. 58. 3. 541–554.
6. Chûjô. M.. 1956. A taxonomic study on the Chrysomelidae (Insecta: Coleoptera) from Formosa. Part VIII. Subfamily Eumolpinae. The Philippine Journal of Science. 85. 1. 1–180.
7. Jacoby. M.. 1904. Another contribution to the knowledge of Indian phytophagous Coleoptera. Annales de la Société Entomologique de Belgique. 48. 380–406.
8. Pic. M.. 1923. Nouveautés diverses. Mélanges Exotico–Entomologiques. 40. 1–32.
9. Jacoby. M.. 1885. Descriptions of the Phytophagous Coleoptera of Japan, obtained by Mr. George Lewis during his Second Journey, from February 1880 to September 1881. — Part I. Proceedings of the Zoological Society of London. 1885. 190–211.
10. Baly. J. S.. 1867. Phytophaga Malayana; a revision of the phytophagous beetles of the Malay Archipelago, with descriptions of the new species collected by Mr. A. R. Wallace. Transactions of the Entomological Society of London. 3. 4. 1–300. 10.1111/j.1365-2311.1866.tb01857.x.
11. Jacoby. M.. 1887. Descriptions of the Phytophagous Coleoptera of Ceylon, obtained by Mr. George Lewis during the years 1881–1882. Proceedings of the Zoological Society of London. 1887. 5. 65–119. 10.1111/j.1096-3642.1887.tb02944.x.
12. Book: Eroshkina, G. A.. 1992. Revision of the Genus Demotina (Coleoptera, Chrysomelidae, Eumolpinae) of the Vietnam Fauna. ru:Ревизия рода Demotina (Coleoptera, Chrysomelidae, Eumolpinae) фауны Вьетнама. Medvedev. L. N.. Systematics and Ecology of the Insects of Vietnam. ru:Систематика и экология насекомых Вьетнама. Nauka. Moscow. 91–103. 9785020054219. Russian.
13. Baly. J. S.. 1874. Catalogue of the Phytophagous Coleoptera of Japan, with descriptions of the species new to science. Transactions of the Entomological Society of London. 22. 2. 161–217. 10.1111/j.1365-2311.1874.tb00164.x.
14. Isono. M.. 1990. A revision of the genus Demotina (Coleoptera, Chrysomelidae) from Japan, the Ryukyus, Taiwan and Korea, I. Japanese Journal of Entomology. 58. 2. 375–382.
15. Bryant. G.E.. 1946. New species of Chrysomelidae (Cryptocephalinae, Eumolpinae and Halticinae, Col.) from Java and Fiji. Annals and Magazine of Natural History. 11. 12. 90. 421–428. 10.1080/00222934508654739.
16. Book: Waterhouse. C.O.. Gahan. C.J.. Arrow. G.J.. 1900. Coleoptera. https://biodiversitylibrary.org/page/20577124. 89–127. Andrews. C.W.. A monograph of Christmas Island (Indian Ocean): Physical features and geology, with descriptions of the fauna and flora by numerous contributors. British Museum Trustees. London.
17. A.G.. Moseyko. 2005. A new species of genus Demotina Baly (Chrysomelidae: Eumolpinae) from Vietnam with notes on synonymi of related species. Russian Entomological Journal. 14. 1. 55–57.
18. A.G.. Moseyko. 2006. A new species of the leaf-beetle genus Demotina Baly (Coleoptera: Chrysomelidae: Eumolpinae) from Vietnam. Proceedings of the Russian Entomological Society. 77. 241–244.
19. Book: Jacoby, M.. 1908. Bingham. C. T.. Coleoptera. Chrysomelidae. Vol. 1. The Fauna of British India, Including Ceylon and Burma. Taylor & Francis. London.
20. Cho. H.-W.. An. S.L.. 2020. An annotated checklist of leaf beetles (Coleoptera: Chrysomelidae) of the Korean Peninsula, with comments and new records. Far Eastern Entomologist. 404. 1–36. 10.25221/fee.404.1. free.
21. Takizawa. H.. 2017. Leaf beetles of Mt. Kinabalu, Sabah, Malaysia (Coleoptera: Chrysomelidae). Japanese Journal of Systematic Entomology. 23. 2. 195–233.
22. Romantsov. P. V.. Moseyko. A. G.. 2019. New and little known species of Eumolpinae (Coleoptera: Chrysomelidae) from Northern Vietnam. Zootaxa. 4609. 2. 321–334. 10.11646/zootaxa.4609.2.7. 31717110. 181592799 .
23. Jacoby. M.. 1896. Descriptions of the new genera and species of phytophagous Coleoptera obtained by Dr. Modigliani in Sumatra. Annali del Museo Civico di Storia Naturale di Genova. 2. 16. 36. 377–501.
24. Bryant. G. E.. 1931. New species of Fijian Eumolpidæ (Col., Phytophaga). Annals and Magazine of Natural History. 10. 8. 46. 355–365. 10.1080/00222933108673405.
25. Bryant. G. E.. 1936. Insects of the New Hebrides: Chrysomelidæ. Annals and Magazine of Natural History. 10. 17. 98. 242–256. 10.1080/00222933608655116.
26. Bryant. G. E.. Gressitt. J. L.. 1957. Chrysomelidae of Fiji (Coleoptera). Pacific Science. 11. 1. 2–91. 10125/8611.
27. Web site: Neal L.. Evenhuis. 2013. Fiji Coleoptera Checklist. hbs.bishopmuseum.org. 16 July 2018.
28. Medvedev. L. N.. 2001. Jacoby's types of Chrysomelidae (Coleoptera) from Burma in the Museo Civico di Storia Naturale "Giacomo Doria", Genoa. Part 1. Annali del Museo Civico di Storia Naturale "Giacomo Doria". 93. 167–184.
29. Moseyko. A.G.. Medvedev. L.N.. 2017. A review of the chrysomelid genus Hyperaxis Gemm. et Har., 1874 (Coleoptera, Chrysomelidae: Eumolpinae) from Vietnam. Entomological Review. 97. 5. 624–642. 10.1134/S0013873817050086. 29631805.