Acontista amoenula Gerstaecker, 1889
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publication ID |
https://doi.org/10.1080/00222933.2025.2468674 |
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DOI |
https://doi.org/10.5281/zenodo.17006128 |
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persistent identifier |
https://treatment.plazi.org/id/03AC87FE-FFC1-FFEB-FECF-FE3350C8F9D2 |
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treatment provided by |
Plazi |
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scientific name |
Acontista amoenula Gerstaecker, 1889 |
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Acontista amoenula Gerstaecker, 1889 View in CoL ( Figure 4A View Figure 4 )
Head. ( Figure 5A View Figure 5 ) Triangular, wider than long. Compound eyes kidney-shaped and barely protruding, outer outline rounded. Ocelli small, as small as the antenna’s pedicel; distance between lateral and central ocelli shorter than lateral-lateral ocelli; distance between lateral ocelli about 2× ocelli length, distance between lateral-central ocelli about 4× ocelli length. Vertex inconspicuously convex, just slightly exceeding an imaginary line connecting the tops of the compound eyes; ps excavated but job not protruding to vertex’s height. Frontal sclerite wider than long, T-shaped, and tripartite.
Prothorax. ( Figures 6A View Figure 6 ) Pronotum elongated, margins smooth with discrete lateral bump more visible in dorsal view ( Figure 6A View Figure 6 1 View Figure 1 ), right below expansion of supracoxal dilatation, thin in lateral view ( Figure 6A View Figure 6 2 View Figure 2 ). Supracoxal dilatation slender, rounded. Metazone elongated, with constriction almost as wide as prozone without lateral pronotal expansion ( Figure 6A View Figure 6 1 View Figure 1 ). Prozone flat in lateral view, metazone almost flattened with anterior part forming a slight bump, posterior end of metazone strongly sloping upwards ( Figure 6A View Figure 6 2 View Figure 2 ).
Prothoracic legs. ( Figures 7A View Figure 7 ) Forecoxae elongated, slightly shorter than pronotum ( Figure 7A View Figure 7 1 View Figure 1 ). Forefemora robust but slimmer than other species, well developed, and triangular, with a straight dorsal margin ( Figure 7A View Figure 7 2 View Figure 2 ). Foretibiae elongated, dorsal margin straight ( Figure 7A View Figure 7 3 View Figure 3 ). All femoral and tibial spines same colour as foreleg but with darkened tips ( Figure 7A View Figure 7 2 View Figure 2 , A 3 View Figure 3 ). Spination formula: F = 3DS/14AvS/5PvS; T = 16AvS/19- 20PvS.
Wings. ( Figure 8A View Figure 8 ) Mesothoracic wings slightly longer than metathoracic wings, in resting position the latter projecting slightly beyond apex of former; both wings reaching apex of abdomen; membrane of the costal field of mesothoracic wing densely reticulated with cross veins branching in all directions. Forewing almost entirely green except for lower half of discoidal field which is completely hyaline. Hindwings with vivid orange colouration on costal field and upper part of discoidal and anal fields; right beneath orange portion is a hyaline portion, followed by dark stripe ranging from anal margin towards orange portion, followed by another small hyaline area near hindwing apex. This dark stripe can be thicker or thinner, varying among specimens but always presenting those hyaline regions and marks in this configuration. Veins in forewing green, it being densely reticulated; veins in costal field of the hindwing orange, but longitudinal veins in discoidal and anal fields gradually becoming black.
Abdomen. Ovoid. TG10 short, wider than long, convex. CS6 broad and long, obtuse, with a small distal central fold towards the gpal8, high number of setae distally; cerci short, shorter than in male, not extending beyond CS6.
Genitalia. ( Figures 9A View Figure 9 , 10A View Figure 10 , 11A View Figure 11 , 12A View Figure 12 ) CG8 with inner portion facing sbu rounded, moderately sclerotised, outer portion with two lateral small projections and a larger median projection; spb smooth; agsl smooth, transversal, poorly sclerotised ( Figure 9A View Figure 9 ). CX8 larger at base in contact with CG8, inner margin membranous, its curvature at base tapered, almost pointy, outer margin relatively more sclerotised at the cxvl, cxdl small, poorly sclerotised, median part of the gp8 with constriction of the CX8 with outer margin sclerotised bearing many setae then sharply curving inwards, gpmo8 protruding outwards, more sclerotised; gpal8 with a few setae in its inner margin and a few more at apex; in lateral view, gp8 with discrete vertical enlargement at its medial side-to-side constriction, upper margin bending downwards forming a duct-like structure at medial region, posteriorly bending upwards with moderate curvature to gpal8; inner portion of gp8 with multiple setae at bending of upper margin towards gpal8 ( Figure 10A View Figure 10 ). gp9 membranous, poorly sclerotised, short, beginning near medial constriction of gp8 and ending near gpmo8; rh extending through the outer margin from ventral base of gp9 and sinuously curving downwards towards ventral portion, gptm9 membranous; in lateral view, gp9 with sclerotised base widening just before middle, where a membranous dorsal expansion can be observed ( Figure 11A View Figure 11 ). gl9 wide, divided into proximal and distal portions, the latter more sclerotised; a few bristle-like spines forming two groups in two clumps, in lateral view, respectively at upper and lower margin, and a few sparse bristles in the distal portion; gpmo9 bulge almost inconspicuous, tapered; upper margin of the proximal portion curved inwards and bent over itself, forming an Ω-like cross section ( Figure 12A View Figure 12 ).
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