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

description: Genus DAEALUS, new genus <i>Body</i> densely squamose above and below; tuberculate or nodulate above. <i>Head</i> globular; immersed in prothorax but not entirely concealed from above; eyes large, coarsely faceted, lateral, almost as widely separated below as above. <i>Rostrum</i> arcuate, somewhat dorso-ventrally compressed, somewhat shorter than pronotum; antennae inserted beyond middle in both sexes. <i>Antennae</i> with scape as long as or longer than funicle excluding club, reaching to eye; funicle 7-segmented, first two funicular segments elongate, first not much longer than second, each about as long as segment 3 plus 4, the other segments successiveiy slightly shorter, submoniliform; club ovate, shorter than the funicle, compact, 4-segmented, basal segment longer than second. <i>Prothorax</i> slightly transverse, convex dorsally, laterally and apically above, with a subapical constriction; ocular lobes small, obtuse. <i>Scutellum</i> absent. <i>Elytra</i> fused, elongate-subcordate, dorsally convex, nine-striate, the ninth stria complete. <i>Wings</i> absent. <i>Legs</i> rather long and slender; femora not distinctly clavate, not distinctly grooved below for reception of tibiae, not toothed, hind pair reaching past base of fifth ventrite, but not reaching past apex of elytra; tibiae for most part straight and subparallel-sided, carinate or not carinate, uncus well developed; tarsi with first segment much longer than second, second submoniliform and shorter than third, third transverse, lobes broad, fourth segment projecting well beyond apex of third, truncate distally, claws large and lateral. <i>Sternmn</i> with pectoral canal deep and broad, terminating near middle of mesocoxae, not squamose; mesosternal receptacle open, or at most indistinctly cavernous in female, walls high and well developed, posterior part not thickened and not projecting much below level of metasternum, however; mesosternal side pieces fused, but episternal suture usually distinct; mesocoxae separated by about breadth of a coxa; metasternum at its narrowest point between mid and hind coxae only about one third as long as breadth of a mesocoxa, only one third to one half as long along median line as first ventrite, metepisternum visible as a subtriangular sclerite at upper edge of junction of metasternum and mesepimeron, metacoxae not quite touching elytra, about twice as widely separated as mesocoxae. <i>Venter</i> with first two segments evidently at least partially fused and rigid but with suture between them deep and distinct, <b>1</b> about as long as following three together along median line, 2 shorter than 3 plus 4 at sides, 5 longer than 3 plus 4 which are subequal in length. Genotype: <i>Daealus tuberosus,</i> new species. This genus is erected for the reception of two new Guam weevils with some diffidence, because it belongs to that poorly characterized, inadequately known, difficult assemblage of genera allied to <i>Acalles.</i> I have been unable to place the genus in any of the synoptic tables including Pacific or Oriental genera that are known to me. It will fit in none of Lea's extensive keys to the Australian Cryptorhynchinae. In Heller's key to the genera of the Cryptorhynchinae of New Caledonia (in Sarasin and Roux, Nova Caledonia 2(3):322, 1916), it runs immediately to <i>Lasiotylodes</i> Heller, but that genus has no relationship to this one. It will not run to <i>Acalles</i> because of its shorter second abdominal segment. It can, perhaps, be said at this time only that the genus is allied to <i>Acalles.</i> It is distinct from <i>Acalles</i> principally because of the structure of the mesosternal receptacle-the termination of the pectoral canal being near the middle of the mesocoxae-and because the second ventrite is shorter than the two following ventrites at the sides. Among the weevils known to me, the genotype of this genus most closely resembles an undetermined species, from Amboina, which may also represent a new genus and which is distinct from <i>Daealus</i> because it possesses a scutellum and.has other structural differences; it is also evidently allied to <i>Tragopus. Daealus</i> is also unknown to Sir Guy Marshall, who has studied the genotype. KEY TO THE SPECIES OF DAEALUS Tibiae not carinate; third elytral interval without distinct, isolated, prominent fasciculatecalli.....................................................................23.D.tuberosusZimmerman. Tibiae conspicuously carinate; third elytral interval with two distinct, usually prominent fasciculate calli in the basal half, the posterior one larger and at about the middle............................................................................24. D. tibialis Zimmerman.
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 110-111, DOI: 10.5281/zenodo.5159964