Notioxenus fulgidus, Zimmerman, 1942

Zimmerman, Elwood C., 1942, Anthribidae Of Guam, Insects of Guam I, Honolulu, Hawaii: Bernice P. Bishop Museum, pp. 65-72 : 68-69

3. Notioxenus fulgidus , new species (pl. 1, F).

Derm shiny black, with legs and antennae yellowish and variably infuscated; without dorsal vestiture.

Head usually entirely concealed from above by prothorax, densely punctate, interstices narrower than punctures; clothed, excepting crown, with long, coarse, shaggy, anteriorly inclined hair in male, evidently clothed only with fine inconspicuous setae in female; crown and front evenly convex; interscrobal area three fourths as broad as interocular area; eyes about three fourths as broad as interocular area. Rostrum slightly and evenly arcuate distally, distance between lower margin of scrobe and apex shorter than first antenna! segment; mandibles with a small antemedian tooth. Antennae reaching backward only to about middle of prothorax, first segment about one seventh shorter than second, slightly broader at base than apex, 2 clavate, arcuate, but slightly shorter than 3 plus 4 plus 5 which are subequal in size, 5 as long as 6 plus half of 7, 7, 8 and 9 each successively slightly shorter; segments 9, 10, and 11 forming a rather compact asymmetrical club, 9 and 10 triangular, truncate at apex, almost straight on inner side, but slanting out rapidly to form acute angles with apical margins on outer side, 9 slightly longer than 10, as long as broad, 10 somewhat shorter and broader than 11 which is ovoid, articulation between segments being near inner sides, thus marking emarginations between segments much deeper on the outer than inner sides. Prothorax large and bulky, slightly longer than broad, distinctly broader than elytra (3:2.7), strongly and evenly convex dorsally, slanting downward toward apex, apical margin two fifths lower than summit which is at basal third, straightly and broadly expanding from base to dorsal carina, which is but slightly arcuate, thence strongly arcuate to apex, distinctly more broadly arcuate behind than beyond middle; dorsal carina less than one sixth from base at its middle, continued forward in a slight curve on sides to a point above and slightly beyond anterior edge of coxal cavity; dorsum densely and evenly punctate, punctures of moderate size, their interstices not broader than their diameters. Elytra slightly more than one seventh longer than broad, only one seventh longer than prothorax, base truncate and well margined, slightly rounded on sides; punctures similar to, or somewhat coarser than those on pronotum, arranged in rows, striae sometimes impressed on sides near base; setae in punctures extremely small, almost invisible. Legs with hind femora somewhat more broadly expanded below and more compressed than others; fore tibiae as long as fore femora; first fore tarsal segment less than one fourth as long as a fore tibia, lobes on third segment long, slender and free, fourth segment slender and projecting well beyond third, claws with a minute subbasal tooth. Sternum with prosternum coarsely reticulate and distinctly punctate, fore coxae separated by not more than a fifth of the diameter of a coxa; mesocoxae almost as widely separated as breadth of a metacoxa; metasternum minutely setose, not more than one third as broad between mid and hind coxae as a metacoxa at trochanter. Venter finely reticulate, finely setose, indistinctly punctate, usually longitudinally concave in male and convex in female, fifth ventrite almost as long as four plus three. Pygidimn vertical, reticulate, minutely punctate and setose, well margined, about one fourth broader than long in female, but as long as broad in male. Length, 1.25-1.75 mm.; breadth, 0.6-0.75 mm.

Holotype male and three paratypes collected on Orote Peninsula, May 24, 1936, by Swezey, the holotype and one paratype from Pipturus , the other two paratypes from "Ficus small leaf"; allotype and seven paratypes collected by Usinger at Piti, May 22, 1936; five paratypes from the same locality collected by Swezey as follows: one from Glochidion, Aug. 18; one found in a garden, Oct. 7; one from dead orange twigs, Oct. 9; one from dead breadfruit branch, Oct. 27; one swept from bamboo, Oct. 29; and one collected by Swezey from Citrus at Inarajan, May 17; holotype and allotype in Bishop Museum. TODO

According to Jordan, this species is evidently allied to Notio:renus tomicoides Sharp, 1891 , from Japan, but it is longer and has the apical half of the elytra less strongly punctate and the abdomen not coarsely punctate as on N. tomicoides .

This small species is perhaps the most easily recognized of the known Guaman Anthribidae . Its large prothorax together with its bare, shiny black derm make it conspicuous among the other species which are pubescent and not shiny.