| Description: |
Derelomus pallidus Fåhraeus, 1844 Fig. 10 Derelomus pallidus Fåhraeus, 1844: 95. Derelomus pallidus Hartmann, 1904: 407. Syn. nov. Derelomus hartmanni Klima, 1934: 134 (replacement name for D. pallidus Hartmann, 1904; preoccupied name). Syn. nov. Derelomus pallidus – Haran et al. 2022a; 2022b (life history, phylogenetic relationships); 2023a (life history). Diagnosis Derelomus pallidus can be distinguished in the combination of small body size (up to 2.5 mm), a short rostrum (at most as long as the pronotum in lateral view; Fig. 10B), the uniformly pale brown body integument (the darker triangular area as base of the elytra in this species is due to the dark color of the tergites partly masked by the wings in repose condition, some specimens have the head and rostrum slightly darker) and the simple claws. It can be distinguished from other species in the D. pallidus group by its comparatively short rostrum (Figs 10B, 11B–F). The general appearance of this species is close to another one in Derelomini: Ebenacobius rectirostris Haran, 2022, but in the latter, the interocular space bears a groove (absent in Derelomus) and the body of the penis lacks a thickening near the base (synapomorphy in Derelomus). In our current knowledge, D. pallidus is the only species of Derelomus associated with the flowers of Euclea L. (Ebenaceae). GenBank accession numbers for the corresponding DNA barcodes: ON553416 / ON553430 /PV698476–77–78–79. Material examined Lectotype of Derelomus pallidus Fåhraeus, 1844 (here designated) REPUBLIC OF SOUTH AFRICA • ♀; “ Cap. b.; sp. [Cape of Good hope, South Africa]” “Drége” “3757; E91+” “Naturhistorika Riksmuseet; Stockholm; Loan no 813/06” “Lectotype ♀; Derelomus; pallidus; Fåhraeus 1844; Haran des. 2025”; NHRS. Lectotype of Derelomus pallidus Hartmann, 1904 TANZANIA • ♂; “ ♂ ” “ Usambara; Kraatz ” “47” “ Derelomus; pallidus Htm ” “Coll. J. Faust; Ankauf 1900” “Staatl. Museum für; Tierkunde Dresden” “Lectotype ♀; Derelomus; pallidus; Hartmann, 1904; Haran des. 2025” “ Derelomus; hartmanni; ... |