Testing Tropiduchini StÅl 1866 (Hemiptera: Tropiduchidae) monophyly, a young inter-tropical taxon of mainly insular species: taxonomy, distribution patterns and phylogeny, with the description of a new genus from Papua New Guinea
Rong-Rong Wang , Xin-Yu Li , Jacek Szwedo , Adam Stroiński , Ai-Ping Liang , Thierry Bourgoin
AbstractA morphological phylogenetic analysis of the tribe Tr opiduchini (Hemiptera: Tropiduchidae) is provided for 21 genera among the 26 recog- nized, including the new genus Oechalinella Wang gen.n., with a new species Oechalinella bifasciata Wang sp.n. Monophyly of the tribe is well supported by synapomorphies derived from the male genitalia. The strict consensus supports two subclades: ((Montrouzierana + Thymbra) + Thaumantia + ) as sister to the clade (Leptovanua + (Vanua + Varma + ) + Daradacella + ). In the first subclade, the clade (Montrouzierana + Thymbra), distributed in New Caledonia and Papua New Guinea, is well supported by three synapomorphies based on the tegmina, while the Thaumantia + group is characterized by the conformation of the anal tube and male gonostyli, and distributed from Malesia to Papuasia and in Central Africa. The second sub- clade is largely distributed from China to Malesia, Papuasia, Southwestern and the Northwestern Pacific islands. The position of the genus Leptovanua remains uncer- tain. The Varma + clade is recovered in all analyses. Implied weighting analysis placed the Varma + lineage as sister to all other genera forming a new group (Lep- tovanua + + ((Montrouzierana + Thymbra) + Thaumantia + )). Fennah’s definition of Tropiduchini is reviewed according to the phylogenetic results and an identification key to all genera is provided with a referenced synopsis of their distribution. Globally, Tropiduchini exhibits an inter-tropical latitudinal distribution and a paradoxical bimodal longitudinal distribution pattern in continental Africa, South-east Asia and the Pacific islands. Distribution data concern nearly 80% of insular taxa. The phylogenetical results suggest that: (i) the tribe originates from continental China; (ii) it evolved mainly from Papuasia by stepping-stone colonization events, promoting s ubsequent insular speciation; and (iii) its evolution has mainly been directed by dispersion versus vicariance.
|Journal series||Systematic Entomology, ISSN 0307-6970|
|Publication size in sheets||1|
|Score|| = 35.0, 20-12-2017, ArticleFromJournal|
= 35.0, 20-12-2017, ArticleFromJournal
|Publication indicators||: 2016 = 4.474 (2) - 2016=3.724 (5)|
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