TYPE: COLOMBIA. Santander: La Belleza, Vereda El Chircal-Ojo de Agua, 2530 m. 18 November 2016, N. Gutiérrez 17 (holotype, JBB 17269)
Diagnosis: Lepanthes pseudoabitaguae is most similar to Lepanthes abitaguae Luer & L.Jost, as its name suggests. The primary distinguishing feature lies in their appendices which in L. abitaguae is triangular, positioned below the stigma and acutely reflexed (vs. oblong and biglandular in L. pseudoabitaguae). Plant epiphytic, caespitose, up to 22 cm tall. Roots slender, flexuous, filiform, ca. 1.0–1.2 mm in diameter. Ramicauls slender, suberect, 3.5–14 cm long, enclosed by 7–13 ribbed, minutely ciliate, acuminate, lepanthiform sheaths. Leaves suberect, papyraceous, purple on the abaxial surface, lustrous, likely iridescent, ovate to elliptical, the margins recurved, reticulate-veined, obtuse, the apex emarginate with an abaxial central apiculum, 4.5–7.2 cm × 1.7–2.3 cm wide, the base cuneate, contracted into a petiole 1.0–1.2 mm long. Inflorescence (1–2) per ramicaul, a congested, distichous raceme successively manyflowered, up to 4.5 cm long, borne on the adaxial side of the leaf by a slender and filiform peduncle, 2.0–3.7 cm long; floral bracts conical, acuminate, 1.4–1.9 mm long. Ovary costate, 3.3–3.9 mm long. Flowers with sepals magenta to pale red, with pale yellow at the margins, petals and lip cinnabar, the column vermilion with the apex claret, the anther cap purple. Dorsal sepal glabrous, ovate, slightly concave in the middle, acute-attenuate, 3-veined, 5.0–6.7 × 3.8–5.5 mm, connate to the lateral sepals for up to 2.65 mm. Lateral sepals shortly papillate along the margins, ovate, oblique, each-2-veined, 4.4–6.1 × 2.4–3.3 mm, connate up to 3.4 mm into an ovate, bifid synsepal with attenuate, divergent apices. Petals transversally trilobed, 3-veined, minutely pubescent, the upper lobe quadrate, oblique, 4 × 2 mm, 2 mm long, the flagelliform midlobe uncinate from the outer margin between the lobes, the lower lobe narrowly triangular, acute, 3.7 × 1.2 mm. Lip bilaminate, the blades suboblong, 1.7–2.6 × 0.6–0.9 mm, the base obtuse, the apex truncate, minutely pubescent, sharply folded over the thin and broadly cuneate connectives, adnate to the base of the column, with a pubescent, oblong, sinuose, biglandular appendix. Column terete, stigma ventral, bilobed, anther dorsal, elongated beyond the stigma, 2.9 mm long. Anther cap cucullate, elongate, 1.7 × 0.5 mm. Pollinia 2, yellow, narrowly oblanceolate, attached to a viscidium, 1.4 mm long.