Eurema albula subsp. marginella
Creators: name: Nieves-Uribe, Sandra
name: Llorente-Bousquets, Jorge
name: Flores-Gallardo, Adrián
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Pieridae
Eurema
Eurema albula
Eurema albula marginella

description: Eurema albula marginella
(Fig. 4 C; Figs. 7–8 A–C). Chorion of 1171 µm long and 363 wide, 3.2 times longer than its equatorial width (Fig. 4 C), and ratio w/l of almost 1/3 (h=14). Color N 00 A 10 M 00. Semifusiform with a convex base and apex (Fig. 4 C), the basal region is slightly wider than the apical (Fig. 4 C). The micropyle is triangular with curved edges and one micropylar opening at each vertex (Fig. 7 A). The micropylar polygon is barely depressed and surrounded by a rosette of three broad rectilinear petals with slightly pointed vertices (Fig. 7 A). The petals are anchored to the central polygon, even though their lateral walls are thinner than the external ones (Fig. 7 A-B). Both petals and wreath lack texture (Fig. 7 A). The perimicropylar region shows an irregular wreath of 14 curved-edged foils within a poorly defined semi-ring; some foils have incipient or absent walls and only the external ones can be seen (Fig. 7 B-i). No transition zone posterior to the wreath (Fig. 7 B-C), and it continues through the apical polygons with aeropyles at their vertices and an incipient micro-grid (Fig. 7 C-ii; Fig. 8 A-i), which is more conspicuous towards the equator (Fig. 7 C). The aeropyles are semicircular and located singly at the vertices of the polygons (Fig. 7 C; Fig. 8 A). 8–12 aeropyles at the vertices, aligned in an apex-equator direction (Fig. 7 C); the micro-grid in this region shows 3–6 very irregular polygons per macro-grid cell and barely conspicuous (Fig. 8 A). Towards the equator, 16–18 almost straight axes are recorded in lateral view (31–37 in total) with few fusions and bifurcations (Fig. 4 C). 65–72 ribs, mostly straight and some diagonal (Fig. 4 C). The axes stand out from the visual plane with great relief (Fig. 8 B), with twice the thickness of the ribs and 1.5 times thicker than the micro-grid (Fig. 8 B). The macro-grid cells are rectangular and of constant size (Fig. 4 C, Fig. 8 B), although narrower towards the base (Fig. 4 C, Fig. 8 D). Each macro-grid cell shows between 8 and 11 semi-elliptical micro-grid polygons without texture in their lumen (Fig. 8 B). Both grids maintain their thickness from pole to pole, and it fades slightly towards the prebase, where it is only recorded with scarce relief. Basal aeropyles are not recorded (Fig. 8 C). In the basal zone, the edges of the polygons and the texture are blurred, so a subtle roughness is recorded (Fig. 8 C).
Eurema albula marginella:
Colombia: Putumayo, Mocoa, EBMA, arriba del campamento (01°06’41” N, 76°40’44” W), 842 msnm, 14-IX-2022, A. Luis (ABD-2425), M. Trujano (ABD-2426); Ecuador: Puyo, San Ramón, Centro Ecológico Sancha Arajuna, 218 msnm, 19/ 20-VII-2008, Ítalo G. Tapia (ABD-3234); Sucumbíos, Lumbaqui, camino a la Antena, 750 msnm, 22-III-2001, J. Llorente et al. (ABD-2969); 23-III-2001, A. Luis (ABD-2972). No mature exochorion: Ecuador: Puyo, San Ramón, Centro Ecológico Sancha Arajuna, 218 msnm, 19/ 20-VII-2008, Ítalo G. Tapia (ABD-2963, ABD-2970); Sucumbíos, Lumbaqui, camino a la Antena, 750 msnm, 23-III-2001, JA. Luis et al. (ABD-2971); Yasuní, 1-XII-2004 (ABD-3233).
description: Published as part of Nieves-Uribe, Sandra, Llorente-Bousquets, Jorge & Flores-Gallardo, Adrián, 2025, Exochorionic morphology in two species of white Eurema (Pieridae: Coliadinae) and its taxonomic contrast on Euremina proposals, pp. 111-130 in Zootaxa 5621 (1) on pages 122-130, DOI: 10.11646/zootaxa.5621.1.5, http://zenodo.org/record/15219949