期刊
CRETACEOUS RESEARCH
卷 52, 期 -, 页码 507-515出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cretres.2014.03.018
关键词
Mesozoic; Early Cretaceous; Giant fleas; Tarwinia; Koonwarra fossil bed
资金
- National Basic Research Program of China [2012CB821903]
- Outstanding Youth Foundation of Jiangsu Province [BK 2012049]
- National Natural Science Foundation of China [91114201]
Tarwinia australis, from the Lower Cretaceous Koonwarra fossil bed, Victoria, South Australia, is the first described Mesozoic flea. It was suggested to have a unique morphology that differs from all other known Mesozoic giant fleas by having a laterally-flattened body and peculiar tibial ctenidia. It represents an extinct family, Tarwiniidae, among the three major Mesozoic monster flea groups. Re-examination of the holotype reveals that this Southern Hemisphere ferocious bloodsucker bears different morphological details from those described previously. Tarwinia australis definitely bears elongate siphonate mouth-parts and a relatively compact antenna with 15 flagellomeres. Its legs are slender, elongate, and armed with pseudocombs-like ctenidia on all tibiae. The abdomen is covered with posteriorly-directed setal rows, and with a posteriorly-located pygidium and exposed male genitalia. It differs from pseudopulicids mainly on the basis of characters of tibial ctenidia that probably indicate a very different host association. (C) 2014 Elsevier Ltd. All rights reserved.
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