Abstract
Mecodema (Coleoptera: Carabidae: Broscini) is a hyperdiverse endemic New Zealand genus of ground beetles with only a few geographically widespread species found throughout the two main islands, as well as many offshore islands. Using specimens from a number of private and institutional collections, in addition new specimens were acquired by extensive pitfall trapping, we describe or redescribe all of the known North Island Mecodema species. Additionally, we redescribe three South Island species from the former genus Metaglymma, as morphological evidence shows that these species are nested within Mecodema. Species descriptions are formed by using 128 morphological characters, which include external characters, as well as both male and female internal structures. There are four new combinations: Mecodema antarctica comb. n., M. aberrans comb. n., M. moniliferum comb. n. and M. tibiale comb. n. We synonymise M. occiputale under Mecodema curvidens, and M. sulcatum under Mecodema oblongum, and reinstate M. scitulum Broun (northwest Hunua Range, Auckland). Twenty four new species are described: Mecodema argentum sp. n., M. atuanui sp. n., M. dunnorum sp. n., M. genesispotini sp. n., M. godzilla sp. n., M. jacinda sp. n., M. kipjac sp. n., M. kokoroiho sp. n., M. mohi sp. n., M. ngaiatonga sp. n., M. ngaitahuhu sp. n., M. papake sp. n., M. perexiguus sp. n., M. rusticulus sp. n., M. temata sp. n., M. teparawhau sp. n., M. teroroa sp. n., M. tewhara sp. n., M. tuhoe sp. n., M. undecimus sp. n., M. wharekahika sp. n., M. xylanthrax sp. n., M. yconomus sp. n., M. zonula sp. n. North Island regional species endemism is very high in Northland (15/16 endemic species), with species becoming more widespread in the southern regions, e.g. Wellington only has two endemic species from a total of eight species. This research increases the total number of described Mecodema species to 102, and will allow a modern taxonomic framework for completion of the revision of the South Island species.
References
Allen, R.B., Bellingham, P.J., Holdaway, R.J. & Wiser, S.K. (2013) New Zealand’s Indigenous Forests and Shrublands. In: Dymond, J.R. (Ed.), Ecosystem services in New Zealand—conditions and trends. Manaaki Whenua Press, Lincoln, New Zealand.
Ball, O.J.-P, Whaley, P.T., Booth, A.M. & Hartley, S. (2013) Habitat associations and detectability of the endemic Te Paki ground beetle Mecodema tenaki (Coleoptera: Carabidae). New Zealand Journal of Ecology, 37 (1), 84–94.
Bates, H.W. (1867) New species of insects from the Province of Canterbury, New Zealand, collected by R.W. Fereday, Esq. Entomologist’s Monthly Magazine 4, 52–56; 78–80.
Berndt, L.A., Brockerhoff, E.G. & Jactel, H. (2008) Relevance of exotic pine plantations as a surrogate habitat for ground beetles (Carabidae) where native forest is rare. Biodiversity Conservation, 17, 1171–1185.
https://doi.org/10.1007/s10531-008-9379-3
Blanchard, C. (1853) Voyage au pole sud et dans l'océanie sur les corvettes l'astrolabe et la zélée; exécuté par ordre du roi pendant les années 1837–1838–1839–1840, sous le commandement de MJ Dumont-D'urville, Capitaine de Vaisseau; publié par ordre du gouvernement, sous la direction supérieure de M. Jacquinot, Capitaine de Vaisseau, Commandant de la Zélée. Zoologie par MM. Hombron et Jacquinot. Tome quatrième.
Britton, E.B. (1949) The Carabidae (Coleoptera) of New Zealand part 3: A revision of the tribe Broscini. Transactions of the Royal Society of New Zealand, 77, 533–581.
Britton, E.B. (1964) New Carabidae (Coleoptera) from Three Kings Islands, New Zealand. New Zealand Journal of Science, 7 (4), 521–527.
Brookes, A.E. (1926) A new genus and eight new species of Coleoptera. Transactions and Proceedings of the New Zealand Institute, 56, 440–448.
Broun, T. (1880) Manual of New Zealand Coleoptera. Government Printer, Wellington. [Part I]: XIX + 1-651 +VIII.
Broun, T. (1882) On the New Zealand Carabidae. New Zealand Journal of Science (Dunedin) 1, 215–227.
Broun, T. (1886) Manual of New Zealand Coleoptera. Government Printer, Wellington. [Parts III and IV]: 745–973 + XVII.
Broun, T. (1893a) Manual of New Zealand Coleoptera. Government Printer, Wellington. [Parts V-VII]: XVII + 975–1504.
Broun, T. (1893b) Descriptions of new Coleoptera from New Zealand. Annals and Magazine of Natural History, 6 (12), 161–392.
Broun, T. (1894) Descriptions of new Coleoptera from New Zealand. Annals and Magazine of Natural History, 6 (14), 302–312; 379–386; 419–428.
https://doi.org/10.1080/00222939408677829
Broun, T. (1903) Descriptions of new Coleoptera from New Zealand. Annals and Magazine of Natural History 7 (11), 450–458; 602–618; 12, 69–86.
https://doi.org/10.1080/00222930308678830
Broun, T. (1905) Descriptions of a new genus and four species of Coleoptera from New Zealand. Annals and Magazine of Natural History, 8 (2), 334–352; 405–422.
https://doi.org/10.1080/03745480509442849
Broun, T. (1908) Descriptions of new species of New Zealand Coleoptera. Annals and Magazine of Natural History, 7 (15), 543–547.
Broun, T. (1912) Descriptions of new genera and species of Coleoptera. [Part I]. Transactions and Proceedings of the New Zealand Institute, 44, 379–440.
Broun, T. (1914) Descriptions of new genera and species of Coleoptera [Part III]. Bulletin of the New Zealand Institute, 1, 143–266.
Broun, T. (1915) Descriptions of new genera and species of Coleoptera. [Part IV]. Bulletin of the New Zealand Institute, 1, 267–346.
Broun, T. (1921) Descriptions of new genera and species of Coleoptera. [PART VII] Bulletin of the New Zealand Institute, 1, 475–665.
Broun, T. (1923) Descriptions of new genera and species of Coleoptera. [Part VIII]. Bulletin of the New Zealand Institute, 1, 667–708.
Buckley, T.R., Krosch, M., Leschen, R.A.B. (2015) Evolution of New Zealand insects: summary and prospectus for future research. Austral Entomology, 54 (1), 1–27.
https://doi.org/10.1111/aen.12116
Carpaneto, G.M. & Fattorini, S. (2002) Flightlessness in psammophilous beetles inhabiting a Mediterranean coastal area: ecological and biogeographical implications. Biogeographia, 23, 71–80.
https://doi.org/10.21426/B6110050
Castelnau, F. Comte de (1867) Notes on Australian Coleoptera. Transactions and Proceedings of the Royal Society of Victoria, 8, 30–38; 95–225.
Chapple, D.G., Ritchie, P.A. & Daugherty, C.H. (2009) Origin, diversification, and systematics of the New Zealand skink fauna (Reptilia: Scincidae). Molecular Phylogenetics and Evolution, 52 (2), 470–487.
https://doi.org/10.1016/j.ympev.2009.03.021
Crosby, T.K., Dugdale, J.S. & Watt, J.C. (1976) Recording specimen localities in New Zealand: an arbitrary system of areas and codes defined. New Zealand Journal of Zoology, 3, 69–70.
https://doi.org/10.1080/03014223.1976.9517903
Donoghue, S.L., Neall, V.E., Palmer, A.S. & Stewart, R.B. (1997) The volcanic history of Ruapehu during the past 2 millennia based on the record of Tufa Trig tephras. Bulletin of Volcanology, 59, 136–146.
https://doi.org/10.1007/s004450050181
Ellis, E.A., Marshall, D.C., Hill, K.B.R., Owen, C.L., Kamp, P.J.J. & Simon, C. (2015) Phylogeography of six codistributed New Zealand cicadas and their relationship to multiple biogeographical boundaries suggest a re-evaluation of the Taupo Line. Journal of Biogeography, 42, 1761–1775.
https://doi.org/10.1111/jbi.12532
Emerson, B.C. & Barratt, B.I.P. (1997) Descriptions of seven new species of the genus Prodontria Broun (Coleoptera: Scarabaeidae: Melolonthinae). Coleopterists Bulletin, 51 (1), 23–36.
Fitzgerald, B.M. & Gibb, J.A. (2001) Introduced mammals in a New Zealand forest: long-term research in the Orongorongo Valley. Biological Conservation, 99 (1), 97–108.
https://doi.org/10.1016/S0006-3207(00)00190-7
Fabricius, J.C. (1775) Systema entomologiae, sistens insectorum classes, ordines, genera, species, adiectis synonymis, locis, descriptionibus, observationibus. Kortii, Flensburgi et Lipsiae. XXXII + 832 pp.
Gibbs, G.W. (2006) Ghosts of Gondwana: the history of life in New Zealand. Craig Potton Publishing, Nelson, New Zealand, 232 pp.
Goldberg, J., Knapp, M., Emberson, R.M., Townsend, J.I. & Trewick, S.A. (2014) Species radiation of carabid beetles (Broscini: Mecodema) in New Zealand. PLoS ONE 9(1), e86185.
https://doi.org/10.1371/journal.pone.0086185
Hall, G.M.J., McGlone, M.S. (2006) Potential forest cover of New Zealand as determined by an ecosystem process model. New Zeland Journal of Botany, 44 (2), 211–232.
https://doi.org/10.1080/0028825X.2006.9513019
Harris, A.C. (1978) The larva of Brullea antarctica (Coleoptera: Carabidae: Broscinae). The New Zealand Entomologist, 6 (4), 401-–405.
Hudson, G.V. (1934) New Zealand Beetles and Their Larvae. Ferguson & Osborn, Wellington, 236 pp + 17 pls.
Jeannel, R. (1941) Coléoptères carabiques. Première partie. Faune de France 39. Librairie de la Faculté des Sciences, Paris, 571 pp.
de Lange, P.J. & Rolfe, J.R. (2008) Hebe saxicola (Plantaginaceae)—a threatened species from western Northland, North Island, New Zealand. New Zealand Journal of Botany, 46 (4), 531–545.
https://doi.org/10.1080/00288250809509783
Larochelle, A. & Larivière, M.C. (2001) In: Crosby, T. (Ed.), Fauna of New Zealand number 43 Carabidae (Insecta: Coleoptera): Catalogue. Lincoln, Canterbury, New Zealand. Manaaki Whenua Press, 285 pp.
Liebherr, J.K., Marris, J.W., Emberson, R.M., Syrett, P. & Roig-Juñent, S. (2011) Orthoglymma wangapeka gen. n., sp. n. (Coleoptera: Carabidae: Broscini): A newly discovered relict from the Buller terrane, north-western South Island, New Zealand, corrobates a general pattern of Gondwanan endemism. Systematic Entomology, 36, 394–414.
https://doi.org/10.1111/j.1365-3113.2011.00569.x
Pardo, N., Cronin, S.J., Palmer, A.S. & Németh, K. (2012) Reconstructing the largest explosive eruptions of Mt. Ruapehu, New Zealand: lithostratgraphic tools to understand subplinian-plinian eruptions at andesitic volcanoes. Bulletin of Volcanology, 74 (3), 617-640.
Pawson, S.M., Brockerhoff, E.G. & Didham, R.K. (2009) Native forest generalist’s dominate carabid assemblages along a stand age chronosequence in an exotic Pinus radiata plantation. Forest Ecology and Management, 258S, S108–S116.
Pawson, S.M., Brockerhoff, E.G., Meenken, E.D. & Didham, R.K. (2008) Non-native plantation forests as an alternative habitat for native forest beetles in a heavily modified landscape. Biodiversity Conservation, 17, 1127–1148.
https://doi.org/10.1007/s10531-008-9363-y
Peck, S.B., Larivee, M. & Browne, J. (2005) Biogeography of ground beetles of Florida (Coleoptera: Carabidae): the peninsula affect and beyond. Annals of the Entomological Society of America, 98 (6), 951–959.
https://doi.org/10.1603/0013-8746(2005)098[0951:BOGBOF]2.0.CO;2
Putzeys, J. (1868b) Les broscides. Stettiner Entomologische Zeitung, 29, 305-–379.
Redtenbacher, L. (1868) Reise der Österreichen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den efehlen des Commodore B. von Wüllerstorf-Urbair. Zoologischer Thiel. Zweiter Band: Coleoptera. Kaiserlich-Königliglichen Hof—und Staatsdruckerei, Vienna. 2 (1867), 249 pp + 5 plates.
Roig-Juñent, S. (2000) The subtribes and genera of the tribe Broscini (Coleoptera: Carabidae): Cladistic analysis, taxonomic treatment, and biogeographical considerations. Bulletin of the American Museum of Natural History, 225, 1–90.
https://doi.org/10.1206/0003-0090(2000)255<0001:TSAGOT>2.0.CO;2
Saunders, A. & Norton, D.A. (2001) Ecological restoration at Mainland Islands in New Zealand. Biological Conservation, 99 (1), 109–119.
https://doi.org/10.1016/S0006-3207(00)00192-0
Seldon, D.S. (2002) Comparison of ground invertebrate assemblages across two types of forest fragment edge. Undergraduate Dissertation, University of Auckland, Auckland, New Zealand.
Seldon, D.S. (2015) A unique species of Mecodema (Carabidae: Broscini) from the Hawke's Bay region, New Zealand, with implications for North–South Island zoogeography. New Zealand Entomologist, 38 (1), 28–35.
https://doi.org/10.1080/00779962.2010.9722189
Seldon, D.S. & Beggs, J.R. (2010) The efficacy of baited and live capture pitfall traps in collecting large-bodied forest carabids. New Zealand Entomologist, 33, 30–37.
https://doi.org/10.1080/00779962.2010.9722189
Seldon, D.S. & Leschen, R.A.B. (2011) Revision of the Mecodema curvidens species group (Coleoptera: Carabidae: Broscini). Zootaxa, 2829, 1–45.
https://doi.org/10.11646/zootaxa.2829.1.1
Seldon, D.S., Leschen, R.A.B. & Liebherr, J.K. (2012) A new species of Mecodema (Carabidae: Broscini) from Northland, New Zealand, with notes on a newly observed structure within the female genitalia. New Zealand Entomologist, 35 (1), 39–50.
https://doi.org/10.1080/00779962.2012.649707
Sharp, D. (1886) On New Zealand Coleoptera, with descriptions of new genera and species. Scientific Transactions of the Royal Dublin Society, (2) 3, 351–454.
Townsend, J.I. (1971) Entomology of the Auckland and other islands south of New Zealand: Coleoptera: Carabidae: Broscini. Pacific Insects Monograph, 27, 173–84.
Townsend, J.I. (2012) Notes on the taxonomy of the Mecodema spiniferum species group (Coleoptera: Carabidae). Weta, 42 (1), 4–13.
Townsend, J.I. (2013) Ecological observations on Mecodema oconnori Broun (Coleoptera: Carabidae: Broscini). Weta, 44, 20–27.
Watts, C., Thornburrow, D., Cave, V. & Innes, J. (2014) Beetle community changes following pest mammal control at two biodiversity sanctuaries in Wellington, New Zealand. Journal of the Royal Society of New Zealand, 44 (2–3), 61–87.
https://doi.org/10.1080/03036758.2013.875478
Wilmshurst, J.M., Eden, D.N. & Froggatt, P.C. (1999) Late Holocene forest disturbance in Gisborne, New Zealand: a comparison of terrestrial and marine pollen records. New Zealand Journal of Botany, 37, 523–540.
https://doi.org/10.1080/0028825X.1999.9512651
Wilmshurst, J.M., McGlone, M.S. & Partridge, T.R. (1997) A late Holocene history of natural disturbance in lowland podocarp/hardwood forest, Hawke’s Bay, New Zealand. New Zealand Journal of Botany, 35, 79–96.
https://doi.org/10.1080/0028825X.1997.10410671