A new parasitoid wasp (Hymenoptera: Chalcidoidea) from the Lower Cretaceous Crato Formation of Brazil: The first Mesozoic Pteromalidae

被引:10
|
作者
Barling, Nathan [1 ]
Heads, Sam W. [2 ]
Martill, David M. [1 ]
机构
[1] Univ Portsmouth, Sch Earth & Environm Sci, Portsmouth PO1 3QL, Hants, England
[2] Univ Illinois, Illinois Nat Hist Survey, Champaign, IL 61820 USA
关键词
Brazil; Crato Formation; Aptian; Hymenoptera; Chalcidoidea; Pteromalidae; AMBER; PHYLOGENY; INSECTA; GENUS;
D O I
10.1016/j.cretres.2013.05.001
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
A new genus and species of small (3.5 mm excluding ovipositor) parisitoid wasp is described from the Lower Cretaceous (Aptian) Crato Formation Lagerstatte of Brazil. Parviformosus wohlrabeae gen. et sp. nov. is known from a single female imago and is assigned to Pteromalidae. It is diagnosed by the robustness of the scutellum, the structure, size and positioning of the mesopleuron, the complexity of the propodeum-petiole junction and a posteriorly curved dorsal 'lip' on metasomal segment 4. At only 3.5 mm in length, P. wohlrabeae is the smallest fossil wasp from the Cretaceous of South America and the first Mesozoic representative of Pteromalidae. (C) 2013 Elsevier Ltd. All rights reserved.
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页码:258 / 264
页数:7
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