Legalov, Legalov, 2024

Legalov, Andrei A., 2024, Reclassification of the tribe Ellescini (Coleoptera: Curculionidae), Ecologica Montenegrina 75, pp. 200-241 : 226

Subgenus: Mesodorytomus Legalov , subgen. nov. ( Figs. 3l , 5 l-5r)

https://zoobank.org/ urn:lsid:zoobank.org:act:07899662-48C1-456E-BD30-AE804B98AB11

Type species: Erirhinus occallescens Gyllenhal, 1835

Diagnosis. Body brownish, black or red, covered with short appressed or sometimes decumbent setae. Rostrum carinate, as rule distinctly longer than pronotum, shorter or subequal to it ( D. occallescens ), almost straight or more or less curved, wider than tibiae. Antennae inserted before middle of rostrum. Scape elongated, not reaching eye. Second antennomere 1.8-3.2 times as long as wide at apex. Humeri weakly convex. Elytral striae distinct. Interstriae wide. Pygidium covered by elytra. Anterior edge of prosternum without erect setae. Precoxal portion of prosternum subequal or more or less longer than postcoxal portion. First and second ventrites impressed in middle at males, and flattened at females. Fifth ventrite with anal setae. Femora thickened, with distinct teeth or tooth barely pronounced. Tibiae with uncus and mucro, rarely lacking it. Endophallus with two sclerites, the first in penis and second outside it. Body length without rostrum 2.7-4.3 mm.

Etymology. From the Greek “μέδοζ” – medium and the name “ Dorytomus ”.

Comparison. The new subgenus differs from Populolamus Legalov , subgen. nov. in that the endophallus is armed with a single sclerite located in the penis.

Composition. Five species from four species groups: Dorytomus annae -group, Dorytomus occallescens -group, Dorytomus ruber -group, and Dorytomus salicis -group.

Figures

Figure 3. Dorytomus spp., aedeagus: a – Dorytomus (Praeolamus) rubrirostris, dorsal view; b – D. (P.) rubrirostris, lateral view; c – D. (P.) dejeani, dorsal view; d – D. (P.) dejeani, lateral view; e – D. (P.) taeniatus, dorsal view; f – D. (P.) taeniatus, lateral view; g – D. (P.) rectinasus, dorsal view; h – D. (P.) rectinasus, lateral view; i – D. (P.) rufulus amplipennis, dorsal view; j – D. (Arctolamus) imbecillus, dorsal view; k – D. (A.) imbecillus, lateral view; l – D. (Mesodorytomus) salicis, dorsal view. Scale bar = 0.2 mm.

Figure 5. Dorytomus and Ellescus spp., aedeagus: a – Dorytomus (Alycodes) friebi, dorsal view; b – D. (A.) friebi, lateral view; c – D. (A.) egorovi, dorsal view; d – D. (A.) egorovi, lateral view; e – D. (A.) winteri, dorsal view; f – D. (A.) winteri, lateral view; g – D. (Populolamus) nebulosus, dorsal view; h – D. (P.) ictor, dorsal view; i – D. (P.) ictor; ventral view; j – D. (P.) minutus, dorsal view; k – D. (P.) minutus, lateral view; l – D. (Mesodorytomus) occallescens, dorsal view; m – D. (M.) occallescens, lateral view; n – D. (M.) cinereus, dorsal view; o – D. (M.) cinereus, lateral view; p – D. (M.) annae, dorsal view; q – D. (M.) ruber, dorsal view; r – D. (M.) ruber, lateral view; s – Ellescus bipunctatus, dorsal view; t – E. bipunctatus, lateral view; u – E. scanicus, dorsal view; v – E. languidus, dorsal view. Scale bar = 0.2 mm.