Apodrosus adustus Giron &amp; Franz 2010, sp.n.
Creators: name: Girón, Jennifer C.
name: Franz, Nico M.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Apodrosus
Apodrosus adustus

description: <b> <i>Apodrosus adustus</i> Girón &amp; Franz sp.n.</b> (Fig. 16) <i>Diagnosis</i> <i>Apodrosus adustus</i> is characterized by the combination of having a mesally constricted rostrum, an apically bifurcated median furrow on the head, uniformly colored legs, a slightly produced interval X along the second fifth of the elytra, and a uniform coverage of brown, iridescent (reddish) scales, except on the ventral surface where the scales are whitish. This species may be distinguished from <i>A</i>. <i>empherefasciatus</i> by its uniformly brown dorsal coloration, the lack of a constriction between the cornu and corpus of the spermatheca, and a less developed ramus of the spermatheca. <i>Specimens examined</i> Holotype &amp;female; “ GRAND BAHAMA ISLAND, Freeport, 20-27 June 1987, W. E. Steiner, M. J. &amp; R. Molineaux ” (NMNH, dissected); paratypes, same label information as holotype (NMNH: 1 dissected &amp;male;, 1 dissected &amp;female;). <i>Description</i> Body length 4–4.5 mm; in dorsal view (Fig. 16A) 2.1-times longer than greatest width which is at midpoint of elytra, shape subrectangular; dorsal outline in lateral view subplane. Integument surface smooth; vestiture uniformly composed of brown, iridescent (reddish) scales, and white scales on ventral surface, with recurvate, decumbent, brown setae. Eyes (Fig. 16B) 1.8-times longer than wide, projected, 0.3-times width and 0.6-times length of head in lateral view, separated from anterior margin of prothorax by 0.6-times greatest diameter of eye; line of anterior margin of eyes impressed; shortest distance between eyes (in dorsal view) 0.4-times greatest width of pronotum; median furrow (Fig. 16B) apically bifurcated, narrow, shallow, extending from anterior margin of eyes though not reaching their posterior margin. Rostrum (Fig. 16B) 1.2- times wider than long, with lateral margins slightly constricted at basal third; epistome apically with 3–4 setae situated on each side, extending posteriorly as a longitudinal, narrow keel to midpoint of rostrum, nasal plate defined, concave. Rostrum in lateral view slightly wider than long; antennal insertion near apical third of rostrum; scrobe curved downwards by 45°, directed ventrally at end, extending to midpoint of eye, separated from it by 2-times width of scrobe. Mandibles with 2–3 lateral setae. Antennae yellowish brown; antennal scape almost reaching posterior margin of eye; funicular antennomere I 1.8-times longer than II; antennal club 0.5-times length of funicle, 2.6-times longer than wide. Pronotum (Fig. 16A) subquadrate, 1.2-times wider than long, with greatest width at anterior third; dorsal surface shallowly puncturate, each puncture with a curved, brown seta; posterior margin slightly bisinuate, 1.2-times wider than anterior margin; prothorax in lateral view (Fig. 16C) with dorsal outline 1.5-times length of ventral outline; scutellum subcircular, with scales. Mesosternum (Fig. 16D) 0.6-times length of prosternum. Metasternum with lateral portions posteriorly produced (in lateral profile gradually ascending towards posterior third, thereafter descending roundly, posterior face covered with scales); distance between posterior margin of mesocoxae and anterior margin of metacoxae 0.7-times length of prosternum. Legs with profemora 1.2-times length of pronotum; claws subparallel. Elytra in dorsal view (Fig. 16A) 1.8-times their greatest width which is 1.6- times wider than pronotum; anterior margins straight; humeral region 1.5-times wider than posterior margin of pronotum; apex rounded; in lateral view (Fig. 16C) with dorsal outline subplane; posterior declivity rounded; striae IX and X fused along their second third; intervals completely covered with brown scales; interval X slightly produced along second fifth; with recurvate, decumbent setae. Venter (Fig. 16D) densely covered with whitish scales; VII with median posterior pit interrupting posterior margin, anterior margin 2.4-times wider than its length; &amp;male;: IV 1.2-times longer than V and VI jointly, as long as VII, with VII posterior margin rounded; &amp;female;: IV 2-times longer than V and VI jointly, 1.7-times longer than VII, VII with posterior margin mesally narrowed. <i>Terminalia</i>. Male with tergum VII subpentagonal, nearly as long as wide; anterior margin subtriangular, mesally narrowly rounded, posterior margin mesally emarginate, laterally rounded. Tergum VIII transverse, 2.2-times wider than its mesal length; anterior margin roundly emarginate; posterior margin widely rounded. Sternum VIII with 2–3 apical setae. Spiculum gastrale with apodeme 1.3-times longer than aedeagus, each furcal arm suboval. Tegmen with tegminal apodeme nearly 0.6-times length of aedeagus, tegminal plate mesally slightly projected posteriorly. Aedeagus in dorsal view (Fig. 16E) 3.6-times longer than its greatest width, lateral margins parallel; apex widely rounded. Endophallus with a pair of opposed lightly sclerotized areas positioned near apex, and a median reticulate area. Aedeagus in lateral view (Fig. 16F) 7.4-times longer than its greatest width. Aedeagal apodemes 0.5-times as long as aedeagus. <i>Female.</i> With tergum VII as long as wide, suboval, posterior margin acutely rounded. Tergum VIII subtriangular, as wide as long. Sternum VIII with lamina triangular, occupying posterior one fifth. Coxites+styli as long as lamina of sternum VIII, stylus 3.6-times longer than its greatest width, with 1 long and 3 shorter apical setae. Genital chamber 0.6-times length of sternum VIII. Spermatheca (Fig. 16G) 1.2-times longer than wide, J-shaped; cornu roundly curved towards ramus; margin between cornu and ramus nearly straight; ramus apically truncate; surface not particularly sculptured. <i>Variation</i> Th e examined specimens vary slightly in size. All examined specimens are apparently teneral. <i>Etymology</i> Named in reference to the uniform brown dorsal scale coloration, with the Latin term <i>adustus</i> meaning “brown, tanned, swarthy” (Brown 1956). <i>Natural history</i> <i>Apodrosus adustus</i> is apparently restricted to Grand Bahama Island (Fig. 18A). The host plan associations remain unknown.
description: Published as part of <i>Girón, Jennifer C. &amp; Franz, Nico M., 2010, Revision, phylogeny and historical biogeography of the genus Apodrosus Marshall, 1922 (Coleoptera: Curculionidae: Entiminae), pp. 339-414 in Insect Systematics &amp; Evolution 41</i> on pages 392-395, DOI: 10.1163/187631210X538799, http://zenodo.org/record/3764564
description: {"references": ["Brown, R. W. (1956) Composition of scientific words, revised edition. Smithsonian Institution Press, Washington, DC, 882 pp."]}