Eurema albula subsp. sinoe
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 sinoe

description: Eurema albula sinoe
(Fig. 4 D, Figs. 7–8 D – F). Chorion 1345 µm long and 339 wide; 3.9 times longer than the equatorial width—where it is the maximum—and ratio w/l of almost 1/4 (h=10) (Fig. 4 D). Color N 00 A 10 M 00. Semifusiform with a weak, slightly convex base and a convex apex of nearly the same width (Fig. 4 D). The micropyle is a very irregular pentagonal polygon, barely depressed relative to the five petals rosette (Fig. 7 D). The petals have rounded vertices and a subtle anchorage with the central polygon, with thinner lateral walls than the external ones (Fig. 7 D – iii). The perimicropilar region has an irregular wreath of 16 curved-edged foils whitin a poorly defined semi-ring. The foils are semi-elliptical polygons with four to six irregular sides each (Fig. 7 E), with some of them with incipient or absent walls that are only distinguished by the margins of the external walls (Fig. 7 E); both the micropylar and perimicropylar zones are smooth (Fig. 7 D – E). No transition zone is distinguished posterior to the wreath (Fig. 7 E), so it continues through the apical polygons with aeropyles at their vertices and an irregular micro-grid (Fig. 7 E – F). The aeropyles are semicircular and arranged singly in a zigzag pattern that coincides with the vertices of the polygons (Fig. 7 F; Fig. 8 D). 10–12 aeropyles aligned in an apex-equator direction at the vértices, with the two closest to the equatorial third of smaller diameter (Fig. 7 F – iv). The micro-grid has one to three irregular elliptical polygons in the closest to the wreath macro-grid cells (Fig. 8 D), and 4–5 rounded polygons towards the equator, but all with subtle roughness in their lumen (Fig. 7 F). Towards the equator, 19–23 nearly straight axes (37–40 in total) are recorded in lateral view—with fusions and bifurcations mainly at the poles—and 68–71 mostly straight ribs, with some diagonals and curves between the basal and apical thirds (Fig. 4 D). The axes are 1.2 times thicker and protrude from the exochorion more than the ribs (Fig. 8 E), which are slightly thicker than the micro-grid, so their differentiation is subtle (Fig. 4 D; Fig. 8 E). Macro-grid cells are four- to sixsided irregular polygons (Fig. 4 D; Fig. 8 E), almost all of the same size, except those with diagonal ribs (Fig. 4 D). The micro-grid exhibits 5–8 irregular, quasi-elliptical to rectangular polygons per macro-grid cell, with incipient roughness (Fig. 8 E – ii). Macro and micro-grids exhibit a constant thickness towards the prebase (Fig. 8 F), where it fades and is visualized as a texture with little relief. Basal aeropyles were not observed (Fig. 8 F). In the basal zone, the edges of the polygons are completely blurred and only a rough texture is found (Fig. 8 F).
Eurema albula sinoe:
Brasil: Paraná, Tirol, Uberaba, Curitiba (25°28’46.16” S, 49°13’97.77” W), 900 msnm, 13-IV-2014, O. Mielke (ABD-938).
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 123-130, DOI: 10.11646/zootaxa.5621.1.5, http://zenodo.org/record/15219949