Evolutionary Pattern and Taxonomy of Psyllid (Homoptera: Psylloidea) 1. On the Subfamily Spondyliaspidinae

나무이의 계통분류 및 진화적 패턴 (나무이상과: 동시목) - 1. 호주나무이아과를 중심으로

  • Hee Cheon Park (Department of Biology, Kyungpook National University) ;
  • Keith L. Tayler (Department of Entomology, ANIC, CSIRO, Australia)
  • Published : 2003.04.01

Abstract

Burckhardt (1987) combined Aphalaridae and Spondyliaspididae into the Psyllidae, as there were no character sets which had clearly defined these three families. During the analysis on the character evolution of the psyllids from the world including Australia, there were a few different results for the taxonomy of the Spondyliaspidinae. 52 species and 28 genera in the Australian native psyllids were dissected to examine the taxonomic position of the subfamily Spondyliaspidinae. All of the dissected psyllids in the subfamily Spondyliaspidinae had one follicle in the male testes, but the subfamilies of the Psyllidae except Spondyliaspidinae were having two or more follicles. By the characteristics with living on the Eucalyptus host plants recently evolved, having just one follicle which clearly defined it from other families and experienced an explosive specific diversification in the Gondwana region, it is reasonable to separate the subfamily Spondyliaspidinae from the family Psyllidae with two or more follicles.

Burckhardt (1987)는 분명하게 과들을 구분해 주는 형질이 없기 때문에 날개 및 생식기의 기본구조가 비슷한 Aphalaridae (모나무이과)와 Spondyliaspididae (호주나무이과)를 Psyllidae (나무이과)의 아과로 통합하였다. 나무이를 대상으로 형질의 기울기와 진화패턴을 분석하기 위해, 호주를 포함한 전세계의 나무이를 분석하면서 호주나무이아과에 관하여 Burckhardt와는 다른 결과를 얻었다. 특히 호주나무이아과에 대한 분류학적 위치를 검토하기 위해 호주전역에서 채집된 28속 52종의 호주산나무이의 정소를 해부한 결과, 나무이의 정소 소포수 형질은 변이가 1-4개까지 나타났으며, 특히 Spondyliaspidinae (호주나무이아과)는 정소소포수가 공통적으로 1개였다. 호주나무이아과가 최근 신생대에 진화한 Eucalyptus 식물군을 기주로 하고, Gondwana 지역에서 폭발적인 종분화를 하였으며, 이 아과의 속 과 종 모두가 1개의 정소 소포수를 공통적으로 가진다는 점에서 호주나무이아과는 나무이과에서 독립된 호주나무이과로 분리하여야 한다.

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