Paradelia lundbeckii

Michelsen, Verner, 2007, Taxonomic review of Eurasian Paradelia Ringdahl (Diptera: Anthomyiidae) with descriptions of two new species, Zootaxa 1592, pp. 1-44 : 7

The Paradelia lundbeckii subsection

The species Paradelia lundbeckii (Ringdahl) and P. setiventris (Huckett) , together with two species endemic to North America ( P. ventribarbata Griffiths and P. mirabilis Griffiths ), form a monophyletic species group believed to be sister-group to the remaining species within the Paradelia intersecta section (see below). In support of this are (1) the strikingly enlarged and long-setose male sternites III and IV ( Fig. 23 ), and (2) the male sternite V (e.g., Figs. 24, 25 ) with a reduced, deeply excavated basal plate and short posterior lobes strongly angled downwards on distal part formed by angular lamella and setulose apex. Incidentally, the modified male sternites III and IV are reminiscent of conditions found in the Delia cardui species group (cf. Michelsen 2007) – hence the derivation of the name ‘Paradelia’. This subsection is further characterized by the presence of three or more apical setulae on pregonite. As discussed below, the present subsection might be expanded to include the species P. nototrigona Ge & Fan described from China.

Figures

FIGURES 23 – 28. Paradelia lundbeckii, male. 23. Sternites I – IV. 24, 25. Sternite V, lateral and latero-ventral views. 26, 27. Hypopygium, lateral and caudal views. 28. Pre- and postgonites, lateral view. Same scale for 24, 25 and 26 – 28 respectively. See text for explanation of arrow.