Dinurothrips guamensis Moulton 1942, new species
Creators: name: Moulton, Dudley
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Thripidae
Dinurothrips
Dinurothrips guamensis

description: 3. Dinurothrips guamensis, new species. Female holotype: color golden brown darkened with black at sides of head and thorax; antenna! segments 1 and 3 to 5 clear yellow, 2 dark golden brown, 6 to 8 brown with extreme base of 6 yellowish. Fore legs, hind tibiae and all <i>tarsi</i> light golden yellow, with sides of femora and tibiae more or less shaded with blackish brown; middle femora and tibiae dark brown, yellowish at tips. \Vings, especially the prominent veins, brown at base and with <i>brown</i> bands in <i>third</i> and fifth sixths, area between veins mostly clear; spines dark brown except distal one on fore vein, which is clear. <i>Head</i> clearly wider than long, <i>constricted abruptly</i> behind eyes; cheeks <i>arched</i> and narrowed <i>rather</i> evenly <i>toward</i> base; clearly <i>though</i> indistinctly reticulate near posterior margin. Eyes prominent, protruding, especially in front for about one <i>third</i> their length; ocelli approximate, anterior ocellus <i>directed</i> forward. Antenna! segment 2 widest, 3 and 4 more or less spindle shaped, 5 roundly conical, 6 and 7 closely joined, 8 long and slender; simple sense cones on 3 and 4. Pronotum explanate at sides, reticulate; pterothorax broadly <i>rounded</i> at sides and narrowed posteriorly; mesonotum irregularly reticulate cross striate, with a distinct longitudinal suture; metanotum with a median triangular area which is striate longitudinally. Forewings strong, veins fused with marginal veins; <i>with</i> eleven spines on outer anterior <i>margin</i> of fused vein and with one near base and two near tip on inner side; with five irregularly placed spines on fused posterior vein. Each hind wing with a distinct median line <i>extending</i> to tip of wing. Abdominal segments reticulated at sides, clear in middle except for two or three transverse lines near anterior <i>margins</i> of segments 3 to 8. Spines at tip of abdomen short and stout, <i>otherwise</i> there are no conspicuous spines on abdomen., Total body length 1.12 mm.; <i>head length</i> 0.11 mm., width at eyes 0.166 mm., across <i>cheeks</i> 0.160 mm.; prothorax, length 0.102 mm., width including explanate extensions 0.193 mm. <i>Length</i> of spines on ninth abdominal segment 40 microns, at tip of tenth segment 26 microns, <i>which</i> is approximately one fourth the length of the segment. Antenna! segments, <i>length</i> (width): I, 33 (26); II, 33 (26); III, 40 (18); IV, 40 (20); V, 36 (22); VI, 30 (20); VII, 10 (10); <i>VIII</i>, 26 (5); total 216 microns. Agana, <i>June</i> 26, on <i>Cestrum pallidum,</i> female holotype and eight female paratypes, 0. H. Swezey (5464). <i>D. guamensis</i> may be <i>separated</i> from <i>D. frontalis</i> Bagnall by its brown middle legs, brown hind femora, also by the absence of black rings or "eye spots" on tergites three to seven. In <i>D. frontalis,</i> the legs are yellow with femora slightly deeper in coloration especially the intermediate pair.
description: Published as part of <i>Moulton, Dudley, 1942, Thysanoptera: Thrips of Guam, pp. 7-16 in Insects of Guam I, Bernice P. Bishop Museum Bulletin</i> on pages 7-8, DOI: 10.5281/zenodo.3634035