All three subspecies of the Lesser Antillean pewee are about long. Within each subspecies the sexes are alike. Adults of the nominate subspecies have a dark sooty brown crown, an olive-brown face with a fulvous tinge, and olive-brown upperparts with a cinnamon tinge on the rump and uppertail
coverts. Their tail is dark grayish brown with pale grayish brown or buffy tips on the feathers and light grayish brown on the feather edges. Their wings are mostly dusky with pale cinnamon buff or grayish buff edges on the
secondaries. Their underparts are cinnamon tawny or dull tawny ochraceous. They have a brown iris, a horn brown
maxilla, a whitish
mandible, and dusky brown legs and feet. Adults of subspecies
C. l. blancoi have a dark sooty olive to sooty blackish crown, deep olive head and upperparts, and a dusky grayish brown tail with some olive on the feather edges. Their wings are mostly dusky with thin paler edges near the tips of the
coverts and pale brownish buff edges on the
secondaries. Their underparts are mostly deep brownish buff with paler undertail coverts and a dark olive shade on the breast and sides. They have a brown iris, a brownish black or blackish brown
maxilla, a pale
mandible usually with a dusky tip, and dusky brown or blackish legs and feet. Adults of subspecies
C. l. brunneicapillus have a dark sooty brown to sooty black crown and a dark brownish olive to olive-brown face and upperparts with a paler and browner rump and uppertail
coverts. Their tail is deep grayish brown with pale grayish brown or olive on the outer webs of the feathers. Their wings are mostly dusky with grayish brown or olive tips on the coverts and pale brownish buffy edges on the
secondaries. Their chin and throat are buffy white or buffy grayish white and their underparts mostly brownish buffy with a strong grayish olive cast on the breast and sides. They have a brown iris, a dusky brown
maxilla, a pale
mandible usually with a dusky tip, and dusky brown or brownish black legs and feet. ==Distribution and habitat==