Donus osellai Winkelmann, 2001
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publication ID |
https://doi.org/ 10.5281/zenodo.178787 |
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DOI |
https://doi.org/10.5281/zenodo.5667589 |
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persistent identifier |
https://treatment.plazi.org/id/7C6D87A2-E739-6055-71E6-F8E86CF6F9E7 |
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treatment provided by |
Plazi |
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scientific name |
Donus osellai Winkelmann, 2001 |
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Donus osellai Winkelmann, 2001 View in CoL
Material. (8 mature larvae), collected in the field: ITALY bor., Sella Nevea, Monte Canin, 1800–2000 m a.s.l., 26.vi.2004, H. Winkelmann leg. (8) (on Achillea clavennae L.).
Differential diagnosis. Mandible with three teeth (x D. crinitus , D. reichei and Hypera -species) ( Fig. 39 View FIGURES 36 – 42 ). Prs and pds1–4 on thoracic segments bacilliform (x D. comatus , D. cyrtus , D. oxalidis , D. palumbarius and D. tesselatus ). Pds2 on dorsum of meso- and metathorax not the shortest seta (x D. palumbarius and D. tesselatus ). Pds2 and pds3 on meso- and metathorax not close each other (x D. intermedius , D. oxalidis and D. tesselatus ) (all Fig. 40 View FIGURES 36 – 42 ). Prn, prs and pds1–4 on thoracic segments and prs, pds1–5 on abdominal segments I–VIII short (x D. cyrtus , D. intermedius and D. oxalidis ) ( Figs 40–41 View FIGURES 36 – 42 ). Prs and pds1–5 on abdominal segments I– VIII bacilliform or clubform (x D. comatus , D. cyrtus and D. oxalidis ). Prodorsum of abdominal segments I– VII with two setae (prs1–2) (x D. austerus , D. comatus , D. crinitus , D. cyrtus , D. osellai , D. oxalidis , D. palumbarius , D. reichei and D. tesselatus ). Pds 1–5 in line on abdominal segments I–VII, not pds2 positioned anteriad to pds3 and pds4 anteriad to pds5 (x D. cyrtus , D. intermedius , D. oxalidis and D. tesselatus ). Pds4 on dorsum of abdominal segments I–VI not the longest seta (x D. palumbarius ) (all Fig. 41 View FIGURES 36 – 42 ).
Description of mature larva.
COLORATION. Head orange, posterior and lateral margins of epicranium dark. Dorsal side of body pale caesious with slightly white median stripe.
HEAD. Head width 0.77 mm (0.75–0.80 mm), head length 0.69 mm (0.68–0.70 mm) ( Table. 1 View TABLE 1 ). Frontal sutures distinct, slender, anteriorly nearly indistinct. Anterior margin of clypeus distinctly concave ( Fig. 36 View FIGURES 36 – 42 ) with strong pigmentation. Labrum dark brown; anterior margin with deep median excision, posterior margin with short and wide median projection ( Fig. 36 View FIGURES 36 – 42 ). Mandibles with three sharp teeth apically ( Fig. 39 View FIGURES 36 – 42 ).
THORAX. Spiracle with oval airtubes oriented posterio-dorsad.
ABDOMEN. Spiracles with oval airtubes oriented postrio-dorsad.
CHAETOTAXY. Head. Setae hairform. Des2 minutely shorter des4, des4 about 0.8 x des5, des5 about 0.7 x des1 and des3 ( Fig. 36 View FIGURES 36 – 42 ). Both les long, approximately of same length. Both ves short. Fs1 the shortest, about 0.7 x fs3; fs3 about 0.7 x fs4; fs4 about 0.7 x fs5 ( Fig. 36 View FIGURES 36 – 42 ). Both cls short, lrms1–3 short ( Fig. 36 View FIGURES 36 – 42 ). Both mds short ( Fig. 39 View FIGURES 36 – 42 ). Sts1–2 long, sts3 very short ( Fig. 37 View FIGURES 36 – 42 ). Dms1–6 stout ( Fig. 38 View FIGURES 36 – 42 ), vms1–5 minute. Mxps minute. Plbs2 short, plbs1, 3 very short, about 0.3 x plbs2; prms long as plbs1; both lig minute ( Fig. 37 View FIGURES 36 – 42 ).
Thorax ( Fig. 40 View FIGURES 36 – 42 ). Bases of setae strongly pigmented, setae unpigmented. Setae short, clubform or bacilliform to hairform (dpls, vpls, pda, msts). Prothorax: prn1, 7 very short, about 0.5 x remaining setae on pronotum. Vpls2 about 0.5 x vpls1. Pedal lobe with three (three to five) setae (pda); pda1–2 long, pda2 about 0.75 x pda1; remaining one (one to three) seta minute. Msts minute. Meso- and metathorax: pds2, pds4 on mesothorax and pds2–4 on metathorax short, about 0.5 x prs, pds1, 3 on mesothorax and prs, pds1 on metathorax. Dls1–2 not closed each other; dls1 short as pds4, dls2 longer than dls1, about 1.3 x. Ss long as dls1. Dpls and vpls long as dls2. Pedal lobe with three (three to five) setae (pda); pda1–2 long, pda2 about 0.75 x pda1; remaining one (one to three) seta minute. Msts minute.
Abdomen. Bases of setae strongly pigmented, setae unpigmented. Setae short, clubform or bacilliform to hairform (dpls, vpls, lsts, msts). Abdominal segments I–VIII ( Fig. 41 View FIGURES 36 – 42 ): pds1–5 approximately in line, pds2 and pds4 positioned slightly anteriad; pds2–5 short, about 0.6 x pds1. Prs1 long as pds1, prs2 short as pds2. Sps long as prs2. Both dpls long as pds1. Vpls2 long, vpls1 minute. Lsts long as dpls1–2, msts minute. Abdominal segment VII: pds2 and pds4 positioned slightly anteriad, pds3 slightly posteriad. Abdominal segment VIII: pds2 and pds4 positioned more anteriad from line joining pds1 and pds5 than on abdominal segments I–VII, pds4 positioned more anteriad than pds2; pds1, pds3 and pds5 approximately in line; pds3 longer than remaining setae. Abdominal segment IX ( Fig. 42 View FIGURES 36 – 42 ): ds1–4 bacilliform; ds 2–4 in line; ds3 the longest, remaining three setae approximately of same length. Both ps bacilliform; shorter than ds1–4, about 0.5 x. Both sts hairform, sts1 very short, sts2 minute.
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