Culex (Microculex) sp. 5 Male genitalia (Fig. 22): Tergum IX lobes moderately developed; base wider than apex; distance between lobes 3–4x basal width; apex with 7–9 fine, simple, straight widely distributed setae. Gonocoxite oblong; subapical lobe small, with 5 simple setae, 2 longer than the others. Columnar process short, broad; 2 straight, apically curved setae (a and b); seta a shorter than seta b, inserted at the same level; ventromesal surface with a group of 5 or 6 fine, simple setae. Gonostylus narrow, pointed, curved; broad leaf-like gonostylar claw with pointed apex.Aedeagus with beak-like ventral process; dorsal process medium-sized, pointed; dorsolateral process sinuous, pointed. Aedeagal sclerite hook-like; apical process curved, rounded. Tergum X sinuous; paraproct dilated at basal level, median portion narrow; crown with 8 curved, pointed blades. Distribution: Specimens collected in Magé District, Rio de Janeiro State, Brazil. Material examined: 2 ♂ G. RJ-STA-171; RJ-STA-180.

Published as part of Oliveira-Christe, Rafael & Marrelli, Mauro Toledo, 2025, Descriptions of the male genitalia of species of Culex (Microculex) (Diptera: Culicidae) from the Atlantic Forest, Brazil, and a dichotomous identification key for those species, pp. 517-543 in Zootaxa 5717 (4) on page 537, DOI: 10.11646/zootaxa.5717.4.3, http://zenodo.org/record/17890931