Diplolepidini, Latreille, 1802

Buffington, Matthew L., Forshage, Mattias, Liljeblad, Johan, Tang, Chang-Ti & Noort, Simon van, 2020, World Cynipoidea (Hymenoptera): A Key to Higher- Level Groups, Insect Systematics and Diversity 4 (2020), No. 1, pp. 1-69 : 42-43

Diplolepidini

Figs. 208–210

Members of this tribe are all gallers of Rosa in the Holarctic Region. The wide variety of galls produced by these species, and the relative ease of locating them in the field, has led to a rather extensive literature on the biology and ecology of these wasps. A very thorough review by Shorthouse (1993) describes in detail the research on the diplolepidine wasps, including gall induction, larval feeding, life cycle aspects, and parasitoids. As hybridzation among rose species can be common, confusing the taxonomy of the group, rose gallers seem to have adapted to intermediate species, much in the same way oak gallers in the Cynipini seem to have ‘specialized’ on intermediate oak species.

Morphologically, these wasps all share a rather unique hypopygium that extends ventrally, and has been described as ‘plough-share shaped’ in literature. Phylogenetically, Liljeblad and Ronquist (1998) recovered this group as sister to Eschatocerus , with

low support. More recently, Ronquist et al. (2015) found the group sister to Pediaspini and Eschatocerini .

Biology. Gall inducers on Rosa (Rosaceae) .

Distribution. Holarctic. Could be moved into non-native areas with horticultural products.

Relevant literature. Shorthouse (1993, 2001) are the most comprehensive reviews to date; Ronquist (1994, 1999), Liljeblad

and Ronquist (1998), and Ronquist et al. (2015) investigated the phylogenetics of the group.

Classification.

Diplolepidini Latreille, 1802

Diplolepis Geoffroy, 1762 ; 52 species but taxonomy is uncertain and far from stable with many more or less dubious taxa; NA, PA Liebelia Kieffer, 1903 ; 9 species PA

Figures

Plate9. Diplolepidini.Fig.208,Diplolepis sp.,USNMENT01231850.Fig.209,Diplolepis rosae,USNMENT00655959.Fig.210,Diplolepisbicolor,USNMENT01231831.