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

description: <b>31. Choerorrhinodes marshalli,</b> new species (pl. 4, E). Derm predominantly dull, coal black, with antennae, apices of tibiae and tarsi reddish; setae white. <i>Head</i> coarsely reticulate throughout; slightly constricted on sides at a diameter of an eye behind eyes, the constriction not continued across dorsum, area behind constriction, at least in part, punctate; densely, coarsely, reticulately, subconfluently punctate from constriction to rostrum; interocular area slightly depressed, two to almost three times as broad as an eye when viewed from above; eyes quite prominent, separated from prothorax for a distance about equal to twice length of an eye. <i>Rostrum</i> subcontinuous in dorsal profile with the interocular area; outline shallowly concavely continued to crown, about three fifths as long as pronotum, twice as long as broad, subparallel-sided from base to antennae, slightly enlarged there, thence subparallel-sided to apex, apical breadth onlj very slightly greater than narrowest postantennal breadth; coarsely reticulate, coarsely, densely, confluently punctate, finely, longitudinally strigate; antennae inserted at middle in female, slightly behind middle in male, scrobes evanescent behind and without a delimiting carina below base of eye. <i>Antennae</i> with scape not reaching much past middle of eye and not extending to hind margin of eye; funicular segment <b>1</b> broader than, and about twice as long as 2, 2 triangular in outline, narrow at base, almost as long as 3 plus 4, 3-5 each successively slightly more transverse; club about as long as or longer than the four preceding segments. <i>Prothora.r</i> only slightly longer than broad, base and apex subtruncate, basolateral angles obtusely rounded in basal fourth, thence almost straight, but slightly arcuately narrowed, to about apical fourth, thence more strongly rounded to feeble subapical constriction, constriction only slightly interrupting dorsal contour which is otherwise distinctly and evenly arcuate longitudinally; coarsely, densely, evenly, re\iculately punctate, discal punctures individually distinct, their interstices less than half as broad as their diameters, individually distinctly and coarsely reticulate; setae minute and inconspicuous. <i>Elytra</i> more than twice as long as broad (6: 2.5), and more than twice as long as prothorax in same proportion, base subtruncate, subparallel-sided in basal two thirds, thence rounded to apex and with a slight subapical constriction; striae deep and coarse, their punctures large and coarse, much broader than intervals, their setae normally quite distinct, the lateral stria terminating at metacoxa; intervals narrow and convex, each bearing a row of fine slanting, conspicuous, closely placed setae, ninth interval rather abruptly costiform beyond apex of second ventrite and joined to third at a distance from elytral apex. <i>Legs</i> with tibial unci very strongly developed, tooth at inner apical angle minute; third tarsal segment deeply bilobed. <i>Sternum</i> coarsely and densely punctate throughout, punctures broader than their interstices; prosternum broadly depressed in middle beyond coxae, intercoxal process slightly narrower than a coxa; metasternum with interstices of punctures shiny, intercoxal process of mesocoxae as broad as a mesocoxa, as long between mid and hind coxae as three times breadth of a mesocoxa; metacoxae separated by two thirds the length of the metasternum between tl1e mid and hind coxae. <i>Venter</i> with the first two ventrites tumid in the female, depressed down middle in male, coarsely and densely punctate as the metasternum, interstices shiny; ventrites 3 and 4 coarsely punctate in their basal half; ventrite 5 coarsely and densely punctate throughout, coarsely reticulate, sparsely setose. Length, 1.6-2.0 mm.; breadth, 0.5-0.6 mm. Holotype male, Orote Point, Aug. 2, 1936, Swezey (bearing label "on red spider on Ipomoea," in error?); TODO allotype female, same place, May 24, Swezey; one paratype with similar data; one paratype, Piti (on hedge), Oct. 22, Swezey; and one paratype, Agana, May 2, Usinger. In addition to the characters given under <i>Choerorrhinodes constricticeps</i> for the separation of this species from that, it should be noted that the antenna! scape does not reach to the hind margin of the eye, the scrobes are not delimited behind by a carina below the basal edge of the eye, the crown of the head is at least in-part punctate and the rostrum is longitudinally strigate. It gives me much pleasure to dedicate this species to Sir Guy MarshaII as an expression of my gratitude and appreciation for his unfailing kindness and cooperation in aiding me in my studies of difficult groups of Curculionidae.
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 123-124, DOI: 10.5281/zenodo.5159964