Item request has been placed! ×
Item request cannot be made. ×
loading  Processing Request

New fossil ephialtitids elucidating the origin and transformation of the propodeal-metasomal articulation in Apocrita (Hymenoptera).

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
اقرأ على الانترنت اقرأ أكثر حفظ في قائمتي
  • معلومة اضافية
    • المصدر:
      Publisher: BioMed Central Country of Publication: England NLM ID: 100966975 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2148 (Electronic) Linking ISSN: 14712148 NLM ISO Abbreviation: BMC Evol Biol Subsets: MEDLINE
    • بيانات النشر:
      Original Publication: London : BioMed Central, [2001-
    • الموضوع:
      Fossils*; Hymenoptera/*anatomy & histology ; Hymenoptera/*classification; Abdomen/anatomy & histology ; Animals ; China ; Female ; Thorax/anatomy & histology ; Wings, Animal/anatomy & histology
    • نبذة مختصرة :
      Background: Apocrita has a special structure that its first abdominal segment has been incorporated into the thorax as the propodeum. The remaining abdomen, metasoma, is connected to this hybrid region via a narrow propodeal-metasomal articulation forming a "wasp waist", which serves an important function of providing maneuverability, flexibility and posture for oviposition. However, the origin and transformation of the propodeal-metasomal articulation are still vague. Ephialtitidae, as the basal group of Apocrita from the Early Jurassic to the Early Cretaceous, have shown various types of propodeal-metasomal articulations.
      Results: This study describes and illustrates two new genera with three new species, Acephialtitia colossa gen. et sp. nov., Proephialtitia acanthi gen. et sp. nov. and P. tenuata sp. nov., collected respectively from the Early Cretaceous Yixian Formation at Liutiaogou and the Middle Jurassic Jiulongshan Formation at Daohugou, both in Inner Mongolia, China. These genera are assigned to the Ephialtitidae based on their complete wing venation, e.g. 2r-rs, 2r-m, 3r-m and 2 m-cu always present in the forewings and Rs, M and Cu in the hind wings. These new fossil ephialtitids have well-preserved propodeal-metasomal articulations indicating metasoma is broadly attached to propodeum.
      Conclusion: The broad articulation between the propodeum and metasoma in basal Ephialtitidae, likely passed on from a still more basal family Karatavitidae, suggests three separate pathways of the transformation of the "wasp waist" in three different derived lineages leading from Ephialtitidae to: (i) Kuafuidae and further to the remaining Apocrita, (ii) Stephanidae, and (iii) Evanioidea. In addition, the demise of ephialtitid wasps lagging behind the flourishing of angiosperms suggests that ephialtitid extinction might have been mainly driven by competition with numerous new taxa (eg. the abundant Cretaceous xylophilous Baissinae and Ichneumonoidea) appeared just before or/and soon after the J/K boundary.
    • References:
      Philos Trans R Soc Lond B Biol Sci. 2010 Feb 12;365(1539):369-82. (PMID: 20047865)
      PLoS One. 2013;8(12):e82587. (PMID: 24340047)
      Nature. 2003 Feb 20;421(6925):807-14. (PMID: 12594504)
      Science. 2002 May 3;296(5569):899-904. (PMID: 11988572)
      Science. 1998 Nov 27;282(5394):1692-5. (PMID: 9831557)
      Proc Natl Acad Sci U S A. 2000 Jun 20;97(13):7030-6. (PMID: 10860967)
    • الموضوع:
      Date Created: 20150419 Date Completed: 20150720 Latest Revision: 20181202
    • الموضوع:
      20250114
    • الرقم المعرف:
      PMC4372304
    • الرقم المعرف:
      10.1186/s12862-015-0317-1
    • الرقم المعرف:
      25887291