Revision of the Neotropical genus Acanthoscelio (Hymenoptera: Scelionidae)

Abstract

The Holarctic Scopula cajanderi (Herz) species group is revised on the basis of external and genitalic characters. The taxa included in the species group are Scopula cajanderi (Herz, 1903 [not 19041) (= the Palaearctic Scopula elwesi sajanensis Prout, I935 syn.nov., = the Palaearctic Scopula elwesi achlyoides Prout, 1935 syn.nov., = the Nearctic Scopula septentrionicola McDunnough, 1939 syn.nov.), thus making S. cajanderi Holarctic; Scopula mustangensis Yazaki, 1995; and Scopula aegrefasciata sp.nov. Lectotypes are designated for the following species which were described from more than one specimen without holotype designation: S. cajanderi, Scopula anaitaria (Herz, 1903), and S. e. achlyoides. The systematic position of Scopula elwesi elwesi Prout, 1922 within the genus Scopula is uncertain. A key to the species is presented with illustrations of the adults and genitalia, and a distribution map is presented for all taxa. An examination of the biogeography of S. cajanderi suggests that the Wisconsinan and Sartan glaciations may have played a part in the origin of the disjunct populations. Sihvonen P. 2001. RBvision du groupe d'espkces Scopula cajanderi (Lepidoptera : Geometridae, Sterrhinae) et descriptioin d'une nouvelle espkce. The Canadian Entomologist 133 : 467486. Resume-La rCvision du groupe d'espbces Scopula cajanderi (Hertz), un ensemble holarctique, est baste sur des caractbres externes et des caractbres gtnitaux. Le groupe comprend d'abord Scopula cajanderi (Hertz 1903 [pas 19041) (= le taxon paltarctique Scopula elwesi sajanensis Prout, 1935, syn.nov., = le taxon paltarctique Scopula elwesi achlyoides Prout,1935 syn.nov., = le taxon ntarctique Scopula septentrionicola McDunnough, 1939 syn.nov.), qui devient donc une espbce holarctique; le groupe est form6 aussi de Scopula mustangensis Yazaki, 1995 et de Scopula aegrefasciata sp.nov. Des lectotypes ont Cte dCsignCs pour les espbces suivantes, dtcrites B partir de plusieurs sptcimens et pour lesquelles il n'y a pas eu de choix d'holotype : S. cajanderi, Scopula anaitaria (Hertz) et S. elwesi achlyoides. La position systkmatique de S. elwesi elwesi Prout, 1922 au sein du genre Scopula demeure incertaine. On trouvera ici une clC cl'identification des espbces, ainsi que des illustrations des adultes et des genitalia et la carte de rCpartition de chaque taxon. Un examen de la biogtographie de S. cajanderi permet de croire que les glaciations du Wisconsinien et du Sartan peuvent Ctre en partir responsables de la discontinuitt entre les populations de cette espbce. [Traduit par la RCdaction]

Widespread Occurrence of Black-Orange-Black Color Pattern in Hymenoptera

“…Intraspecific variation in color appears to be quite common in Scelioninae, including variation between individuals of the same sex. For example, in several species of Acanthoscelio ( Dotseth and Johnson 2001 ) and in Pseudoheptascelio rex ( Johnson and Musetti 2011 ) the mesosoma varies from orange to entirely black. In addition to the typical BOB 0 pattern and the 11 variations illustrated in Fig.…”

Evidence of Seasonal Variation in Body Color in Adults of the Parasitoid Cirrospilus pictus (Hymenoptera: Eulophidae) in Sicily, Italy

“…For example, among Hymenoptera, many species of Scelioninae, Tetrastichinae and Eulophinae show a recurring color pattern of a black head, orange mesosoma, and black metasoma [ 7 ]. In several species of Scelioninae, variation between individuals of the same sex appears to be quite common, with the mesosoma varying from orange to entirely black [ 8 , 9 ]. Additionally, some Ichneumonidae species show intraspecific variation, for example, in females where the mesoscutum varies from entirely orange to almost entirely black [ 10 ].…”