FIGURE 4. Phylogenetic hypothesis for 19 in Xyela fusca spec. nov. from Japan elucidates East Asian – North American relationships of Xyela (Hymenoptera, Xyelidae)

FIGURE 4. Phylogenetic hypothesis for 19 species of Xyela and, as outgroup taxa, five species of Macroxyela, Megaxyela and Pleroneura based on a maximum likelihood analysis of the barcoding section of COI. Values above branches represent maximum likelihood bootstrap clade frequencies. Each specimen is labelled as follows: "Xyela ..."—species name (Xyela '016 China bakeri group', Xyela '021 USA minor group', Xyela '023 USA minor group' and Xyela '024 USA minor group' are provisional names referring to unidentified species classified on species-group level); "DEI-GISHym ..."—unique specimen identifyer; "♀/♂/L"—female/male imago or larva; "ex Pinus …"—pine species from which larva was extracted; "USA- California …"—country and state/province of origin; "658bp/270bp"—length of sequence.