Hypanartia dione subsp. disjuncta
Creators: name: Llorente-Bousquets, Jorge
name: Nieves-Uribe, Sandra
name: Flores-Gallardo, Adrián
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nymphalidae
Hypanartia
Hypanartia dione
Hypanartia dione disjuncta

description: Hypanartia dione disjuncta (Plates 12, 13) (n=26).
The chorion is 923 µm long and 1010 µm wide; the ratio of length/width is 0.9 and width/length is 1.1; the greatest amplitude is at the equatorial third. The base is convex and approximately 1.5 times broader than the apex, which is convex to semi-flat; the chorion is semi-ovoid (Plates 12, 13, Figs. A). It exhibits 10 to 12 ridges made up of colonnades with narrow beams, which run from the edge of the apical region to the base (Plate 12, Fig. A-i, Plate 13, Fig. A); the columns extend above the chorion from the apical region to the equator and, from this point, they barely protrude from the surface (Plate 12, Fig. A-ii, Plate 13, Fig. A). For each ridge, there are at least 40 columns with plinths protruding slightly sideways from the rail, but without noticeable ribs between ridges until the prebase (Plate 13, Fig. A). Sections of the chorion without ribs have a smooth texture (Plate 13, Figs. A, C). Both the rail and the plinths have well-defined grooves (Plate 13, Fig. B); the rail is very subtle and barely noticeable in the intercolumnar spaces (Plate 13, Fig. B). The capitals of the columns are joined by a beam with marked depressions in the areas with aeropyles (Plate 13, Fig. B), which number 48 to 52 along the ridge (Plate 13, Fig. A). A thin, smooth wall can be seen surrounding the colonnades from the equator to the apical region; it is slightly thinner at the intercolumnar spaces (Plate 12, Fig. A-iii, Plate 13, Fig. B). The columns become shorter from the equatorial third to the basal fifth (Plates 12, 13, Fig. A), where only the beam can be seen (Plate 13, Figs. A, C). The prebase has a slightly rough texture, and five to seven ‘ribs’ can be seen between the ridges (Plate 12, Fig. A-iv, Plate 13, Fig. C), which are barely raised and lack a thickened and conspicuous structure. In apical view, neither ribs nor ridge projections are visible beyond the transition zone (Plate 12, Fig. B-v, Plate 13 Fig. D). There are no ribs joining the ridges at their most apical section (Plate 12, Fig. B-v, Plate 13, Fig. D). The most apical portion of the ridge lacks aeropyles (Plate 13, Fig. D). The three zones that can be distinguished in apical view—micropylar, perimicropylar, and transition—exhibit an incipient rough texture (Plate 13, Figs. D-F). The perimicropylar region exhibits an irregular wreath of 13 four- to seven-sided leaves that form an irregular semi-ring. All the leaves are well defined, but three of them lack a thickened external wall, with only a relief (Plate 13, Fig. E). In some leaves closest to the transition zone, there are projections at their vertices that have the same thickness as the walls, but they do not form a polygon (Plate 13, Fig. E). The micropylar rosette has seven straight-sided petals with sharp vertices, that are either pentagonal or hexagonal. They are well anchored to the central polygon. A pair of leaves from the wreath are near the petals but are not attached to the central polygon (Plate 13, Fig. F). Four micropylar openings are present that coincide with the vertices of the central rhomboidal polygon, which is at the same visual level as the petals (Plate 13, Fig. F). The outer walls of the petals are slightly thicker than the lateral ones. Color N 00 A 30 M 00.
description: Published as part of Llorente-Bousquets, Jorge, Nieves-Uribe, Sandra & Flores-Gallardo, Adrián, 2023, Exochorion in the tribe Nymphalini (Lepidoptera: Nymphalidae): the genus Hypanartia Hübner, [1821] and comparison with related genera, pp. 151-200 in Zootaxa 5330 (2) on page 170, DOI: 10.11646/zootaxa.5330.2.1, http://zenodo.org/record/8253638