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Image of Schacontia themis Solis & Goldstein
Unresolved name

Schacontia themis Solis & Goldstein

Description

provided by Zookeys
Male. (Fig. 6). Forewing length: 5.3–10.0 mm. Head - Ocelli present; proboscis with pale basal scales in males, light brown basal scales in females. Vertex and frons yellowish white in males, intermixed with brownish-gray scales in females; frons of normal (convex) contour; maxillary palpi uniformly grayish brown; labial palpi grayish brown in males, fading to gray apically in females; labial and maxillary palpi porrect, extending well beyond clypeus; antennal scape and pedicel yellowish white, flagellomeres grayish brown. Thorax - Thoracic collar, tegula and mesoscutum yellowish white in males, brownish gray in females. Males with flattened hind tibial apical spur, hind tibial tuft of long black scales intermixed with pale yellowish-white scales, epipleural setae, and shallow concave metatarsal modification. Females with two pair of hind tibial spurs (medial pair present). Forewingground color straw, with few contrasting markings other than jagged chocolate-brown antemedial and postmedial lines, postmedial line outwardly bulging only slightly, towards costa. Medial area unicolorous with basal area and postmedial areas. Fringe darkened apically. Hindwing. Almost uniformly pale, shaded brown at subterminal area. Abdomen - Dorsal surface straw brown. Scales arranged in two terminal black dorsal spots in males. Lobe-like extensions resembling rudimentary coremata on 4th abdominal sternum. Tympanal organs. (Fig. 26). As for ysticalis-themis group, vide supra. Male genitalia (Figs 49, 50) - Tegumen divided into two obliquely opposed oval sections meeting caudally near base of uncus and diverging widely anteriorly towards valvae. Teguminal sulcus short, such that anterior margin of tegumen appears deeply invaginate, two oblong teguminal lobes joined obliquely. Uncus with prominent medial ridge; uncal tip hastate, trefoil-like; lateral edges of uncus swollen, appearing re-enforced and lending a shovel- or scoop-like appearance to uncus. Gnathal plate narrowed to a transverse band with arms at each corner and a small, nub-like process arising centrally; dorsal arms wrap around anal tube while a ventral pair extend to termini of vinculum. Vinculum variously U-shaped or horseshoe shaped with pronounced pockets or eyelets at each terminus. Juxta robust, V-shaped; valvae complex, robust costa arising near vincular terminus, extending almost length of valva, and tapering to a point. A serrate, trigger-like ventral spine arises from ventral margin of sacculus; robust, spine-like setae at base of valva; saccular margin angled close to vinculum, not at saccular mid-point; ventro-marginal setae concentrated at venter or saccular ulna; valva with secondary fleshy subcostal setose lobe, setal plume recurved/decumbent. Elongate saccular process at outer saccular margin; saccular margin with several stout setae. Inner surface of valvae dorsal to saccular area with a small, circular setal cluster. Phallus moderately sclerotized; vesica with two large cornuti. Female genitalia (Fig. 51) - Papillae anales separate, not especially swollen; anterior and posterior apophyses threadlike, approximately equivalent in length; antrum/ductus bursae conspicuously sclerotized with a partial ventral collar or sleeve ventrally anterior to colliculum; a sharp constriction between ductus bursae and colliculum; colliculum a short sclerotized ring immediately posterior to corpus bursae with a narrow differentially sclerotized band around its center; corpus bursae membranous, more or less round, without signa or conspicuous appendices except single posterio-dorsal lobe; ductus seminalis appears to originate from antrum.
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copyright
Paul Z. Goldstein, Mark A. Metz, M. Alma Solis
bibliographic citation
Goldstein P, Metz M, Solis M (2013) Phylogenetic systematics of Schacontia Dyar with descriptions of eight new species (Lepidoptera, Crambidae) ZooKeys 291: 27–81
author
Paul Z. Goldstein
author
Mark A. Metz
author
M. Alma Solis
original
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Distribution

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Brazil, Cayman Islands, Costa Rica, Cuba, Dominican Republic, Florida (USA), Jamaica, Mexico, Panama, Puerto Rico, Venezuela. The Sanibel Island, Florida record represents the only known United States occurrence of any Schacontia.
license
cc-by-3.0
copyright
Paul Z. Goldstein, Mark A. Metz, M. Alma Solis
bibliographic citation
Goldstein P, Metz M, Solis M (2013) Phylogenetic systematics of Schacontia Dyar with descriptions of eight new species (Lepidoptera, Crambidae) ZooKeys 291: 27–81
author
Paul Z. Goldstein
author
Mark A. Metz
author
M. Alma Solis
original
visit source
partner site
Zookeys