20 mm; AbdII-AbdIV with 1-3 marginal papillae; SIPH down to 0.
Antennae brown to dark brown, darker than head and as dark as the pigmented part of HF and SIPH, 2.
If the classical criteria of definition of each of the subgenera Uroleucon, Uromelan and Lambersius are used, these 4 new species should be placed in the subgenus Uroleucon, because the SIPH are pigmented in their entire length and the cauda is much paler than the SIPH.
sinuense due to several characteristics, the length and reticulation of SIPH being very evident: 0.
5 times Ht2 at least) and its accessory setae (conspicuous), but are easily differentiated from them by the shape, size and ornamentation of SIPH.
sinuense by the different shape and reticulation of SIPH and presence/absence of marginal papillae on the abdomen and by several characters of URS: shape, absolute and relative lengths, number and length of the accessory setae.
Cauda finger-like, smoked light brown to brown, paler than SIPH and as pig mented as anal plate; (0.
Pale proximal portion of the SIPH longer than in aptera, but yet short.
manitobense: number of secondary sensoria on Antlll (11 at most, 14 at least in manitobense), reticulated part of SIPH (42% at most, 40% at least in manitobense), flange of SIPH (absent, present in manitobense); it is differentiated from U.
SIPH pale, concolorous with abdominal tergite, at most dusky at apex 2
Apical reticulation of SIPH developed (more than 3 rows of cells).
Apical reticulation of SIPH weakly developed (1-2 rows of cells).