English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The 15 species of    Mecyclothorax    Sharp precinctive to New Caledonia are revised and shown by cladistic analysis to comprise a monophyletic lineage, here treated as subgenus   Phacothorax   Jeannel. The New Caledonian species of subgenusPhacothorax   include    Mecyclothorax   fleutiauxi    (Jeannel),    M.   najtae    Deuve, and 13 newly described species:    M.   jeanneli    sp. n. ,    M.   laterobustus    sp. n. ,    M.   laterorectus    sp. n. ,    M.   laterosinuatus    sp. n. ,    M.   laterovatulus    sp. n. ,    M.   manautei    sp. n. ,    M.   megalovatulus    sp. n. ,    M.   octavius    sp. n. ,    M.   paniensis    sp. n. ,    M.   picdupinsensis    sp. n. ,    M.   plurisetosus    sp. n. , and two jointly authored species;    M.   kanak    Moore &amp; Liebherr  sp. n. , and    M.   mouensis    Moore &amp; Liebherr  sp. n. . subgenusPhacothorax   is one of five subgenera recognized within genus    Mecyclothorax    based on cladistic analysis of 65 exemplar taxa utilizing information from 137 morphological characters. The four other monophyletic subgenera include the precinctive Australian    Eucyclothorax    subgen. n.  (type species    Mecyclothorax   blackburni    [Sloane]), the precinctive Queensland    Qecyclothorax    subgen. n.  (type species    Mecyclothorax   storeyi    Moore), the precinctive New Zealand    Meonochilus    Liebherr &amp; Marris  status n. , and the geographically widespread and very diverse nominate subgenus, distributed from St. Paul and Amsterdam Islands, eastward across Australia and New Guinea, and in the Sundas, Timor Leste, Lord Howe and Norfolk Islands, New Zealand, and the Society and Hawaiian Islands. The biogeographic history of    Mecyclothorax    can be derived from the parsimony cladogram time-calibrated by times of origin of particular geographic areas inhabited by resident representative species. Based on sister-group status of subgenusPhacothorax   and subgenusMecyclothorax  , and occupation of Lord Howe Island–an island originating no earlier than 6 Ma–by the earliest divergent lineage within subgenusMecyclothorax  , the ancestor of present-day    Phacothorax    spp. is hypothesized to have colonized New Caledonia 6 Ma, subsequent both to Cretaceous Gondwanan vicariance as well as any Oligocene submergence. Area relationships among the New Caledonian    Phacothorax    point to earliest diversification incorporating the northern massifs, and most recent diversification on the ultramafic volcanic substrates in the south of Grand Terre. Flight wing loss has played an important role in shaping the various island faunas, both in their morphology as well as their diversity. The retention of flight capability in only a few of the many hundred    Mecyclothorax    spp. is presented in light of how populations evolve from macropterous colonizing propagules to vestigially winged specialists. Interspecific differences in genitalic structures for the sister-species pair    M.   fleutiauxi    +    M.   jeanneli    are shown to involve functional complementarity of male and female structures. Extensive geographic variation of male genitalia is demonstrated for several New Caledonian    Mecyclothorax    spp. This variation deviates from the geographically uniform male genitalia exhibited by species in the hyperdiverse    Mecyclothorax    radiation of Haleakalā volcano, Maui, suggesting that extensive sympatry occurring among species in that diverse species swarm selects for stability within this mate recognition system. Conversely, lower levels of sympatry characterizing the depauperate New Caledonian radiation permit the presence of more extensive male genitalic variation, this variation not selected against due to the lower likelihood of interspecific mating mistakes.

deutsche entomologische zeitschrift

Cladistic classification of    Mecyclothorax    Sharp (  Coleoptera  ,   Carabidae  ,   Moriomorphini  ) and taxonomic revision of the New Caledonian subgenus      Phacothorax    Jeannel