Daealus tibialis Zimmerman. 1942, new species
Creators: name: Zimmerman, Elwood C.
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Daealus
Daealus tibialis

description: <b>24. Daealus tibialis,</b> new species (pl. 2, <i>E).</i> Derm reddish brown to black, densely squamose above and below; scaling colored as follows: head brown, usually with a white patch at inner upper corner of eye and a dark area on either side of middle of crown; prothorax basically with brownish yellow and yellowish white scales, with an outstanding black vitta behind middle in front of elytral interval 5; elytra with basic coloration similar to that of prothorax, with discal area between fasciculate calli on interval 3, laterally to fifth intervals usually quite conspicuously paler than surrounding areas, yellowish white, usually with black scales on posterior part of hind callus on interval 3 and a rather large area before and beyond apices of intervals 4 and 7; legs with femora banded with pale and dark scales; underside yellowish white. <i>Head</i> with derm almost entirely concealed by scaling which is prostrate or slanting, setae erect and very similar in size and shape to squamae; interocular fovea not strongly developed, interocular area coarsely sculptured, with median carina of rostrum continued to level of tops of eyes. <i>Rostrum</i> about four fifths as long as pronotum; coarsely, confluently punctate to antennae in male, lateral carinae irregular or indistinct, median carina well developed, less coarsely sculptured in female, but closely punctured. <i>Antennae</i> with scape about as long as funicle plus basal segment of club; funicle with segment 1 about as long as 2 plus one fourth of 3, 2 about as long as 3 plus 4, 3 slightly longer than 4, 4 to <i>7</i> successively slightly broader; club about as long as five preceding funicular segments. <i>Prothorax</i> one fifth to one sixth broader than long, rather evenly expanded on sides to near middle, then strongly rounded to subapical constriction at apical fourth, constriction strongly continued across dorsum and making longitudinal dorsal outline conspicuously sinuous; disk with variable, small to large punctures, median line broadly and conspicuously impressed, with numerous small, low, round, polished tubercles, most numerous on either side of median line, and absent from median canal; scaling similar to that on elytra; setae scattered, but condensed on either side of middle <i>o{</i> apex, erect or suberect, spatulate. <i>Elytra</i> fully three fourths as broad as long, twice as long as prothorax; base subtruncate, sides arcuate to middle, thence subtriangularly narrowing to the rounded apex; striae with coarse foveiform punctures about as broad as intervals in basal third or half, but small and inconspicuous behind; intervals, excepting <b>1</b> and lateral one or two, strongly convex at least in basal half, but not so behind, <b>1</b> not tuberculate, usually with a nearly complete row of suberect, spatulate setae, 2 with a complete row of tubercles from base to apex, 3 with a callus at about basal fourth and another more prominent and higher one at about middle, the calli usually distinctly fasciculate, with tubercles from first callus to base, otherwise without tubercles, 4 tuberculate, 5 partially tuberculate, at least near base, 6 to 10 tuberculate, tubercles smaller toward sides and apex of elytra. <i>Legs</i> with femora and tibiae densely squamose; femora with numerous, scattered tubercles; tibiae with two strongly developed carinae on either side. <i>Steriimn</i> densely squamose throughout, mesasternal receptacle hardly cavernous in either sex; metasternum between mid and hind coxae one fourth as broad as a mesocoxa. <i>Venter</i> densely squamose, with first ventrite flattened in middle in male, hardly different in female; ventrite 5 with scales mostly replaced by hairs at apex in male. Length, 3-4.0 mm.; breadth, 1.5-2.0 mm. Holotype male, allotype female, collected at Dededo, May 11, 1936, Usinger; and the following paratypes: one with data identical with that of the holotype; one, Orote Peninsula, from <i>Prenina gaudicliaudii (integrifolia)</i> on label, May 8, Bryan; three, Agana, May 25, Usinger. The following paratypes are from the National Museum material: eight, from <i>Morinda citrifolia (Morinda indica</i> according to Merrill), Oakley, no. 748; and three taken by Fullaway. In addition to being smaller than the genotype, the carinate tibiae, form and position of the fasciculate elytral calli, coarser stria! punctures, and lack of such distinct sexual characters in the male will readily distinguish this species.
description: Published as part of <i>Zimmerman, Elwood C., 1942, Curculionidae of Guam, pp. 73-146 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum</i> on pages 113-114, DOI: 10.5281/zenodo.5159964