Donus reichei (Capiomont, 1868)

Donus reichei (Capiomont, 1868)

Material. (2 mature larvae), collected in the field: SYRIA occ., province Tartus, Mashtal’helu env. ( 3 km East), 31.iii.2001, J. Skuhrovec leg. (2) (on Medicago sp.).

Differential diagnosis. Mandible with four teeth (x D. austerus , D. comatus , D. cyrtus , D. intermedius , D. osellai , D. oxalidis , D. palumbarius , D. tesselatus and Hypera -species (subgenera Eririnomorphus , Dapalinus , Boreohypera and Hypera s.str.)) ( Fig. 60 View FIGURES 57 – 63 ). Prn1–10 bacilliform (x D. comatus , D. crinitus , D. cyrtus , D. oxalidis , D. palumbarius , H. dauci and H. vidua ). Prs and pds1–4 on thoracic segments bacilliform (x D. comatus , D. cyrtus , D. oxalidis , D. palumbarius , D. tesselatus , H. dauci and H. vidua ). 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 ). Dpls on meso- and metathorax bacilliform (x D. comatus , D. crinitus , D. cyrtus , D. osellai , D. oxalidis , D. palumbarius , D. tesselatus , H. dauci , H. lunata and H. vidua ) (all Fig. 61 View FIGURES 57 – 63 ). Prn, prs and pds1–4 on thoracic segments and prs, pds1–5 on abdominal segments I–VIII short (x D. cyrtus , D. intermedius , D. oxalidis , H. dauci and H. vidua ) ( Figs 61– 62 View FIGURES 57 – 63 ). Prs and pds1–5 on abdominal segments I–VIII bacilliform (x D. comatus , D. cyrtus , D. oxalidis , D. tesselatus , H. dauci and H. vidua ). Prodorsum of abdominal segments I–VII only with one seta ( prs) (x D. osellai ). 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 , D. tesselatus , H. dauci and H. vidua ). Pds4 on dorsum of abdominal segments I–VI not the longest seta (x D. palumbarius ) (all Fig. 62 View FIGURES 57 – 63 ). Ds3 1.3 x longer than ds1–2, 4 (x D. austerus , D. comatus , D. crinitus , D. cyrtus , D. intermedius , D. osellai , D. oxalidis , D. palumbarius , D. tesselatus and H. dauci ) ( Fig. 63 View FIGURES 57 – 63 ).

Description of mature larva.

COLORATION. Head pale brown, posterior and lateral margins of epicranium dark. Dorsal side of body green with white median stripe.

HEAD. Head width 1.25 mm ( 1.23–1.28 mm), head length 1.18 mm ( 1.15–1.20 mm) ( Table. 1 View TABLE 1 ). Frontal sutures distinct, slender, anteriorly nearly indistinct. Anterior margin of clypeus distinctly concave ( Fig. 57 View FIGURES 57 – 63 ) with pigmentation. Labrum pale brown; anterior margin with slender median excision, posterior margin with short and wide median projection ( Fig. 57 View FIGURES 57 – 63 ). Mandibles with four sharp teeth apically ( Fig. 60 View FIGURES 57 – 63 ).

THORAX. Spiracle with oval airtubes oriented dorsad.

ABDOMEN. Spiracles with oval airtubes oriented posterio-dorsad.

CHAETOTAXY. Head. Setae hairform. Des2 the shortest, about 0.5 x des4; des4 about 0.6 x des1, des3 and des5, approximately of same length ( Fig. 57 View FIGURES 57 – 63 ). Both les long, approximately of same length. Both ves short. Fs1 and fs3 the shortest, about 0.7 x fs4; fs4 about 0.5 x fs5 ( Fig. 57 View FIGURES 57 – 63 ). Both cls very short, lrms1–3 short ( Fig. 57 View FIGURES 57 – 63 ). Both mds very short ( Fig. 60 View FIGURES 57 – 63 ). Sts1–2 long; sts3 short, about 0.5 x sts1–2 ( Fig. 58 View FIGURES 57 – 63 ). Dms1–6 stout ( Fig. 59 View FIGURES 57 – 63 ), vms1–5 minute. Mxps very short. Plbs1–2 long; plbs3 very short, about 0.25 x plbs1–2; prms long as plbs1; both lig minute ( Fig. 58 View FIGURES 57 – 63 ).

Thorax ( Fig. 61 View FIGURES 57 – 63 ). Bases of setae strongly pigmented, setae pigmented. Setae short, bacilliform or hairform ( vpls, pda, msts). Prothorax: prn1–8 short; prn9–10 shorter than previous setae ( prn1–8), about 0.7 x. Vpls2 about 0.3 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: prs and pds1–4 very short, approximately of same length. Both dls very short, both ss very short. Dpls and vpls 2 x longer than previous setae. 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 pigmented. Setae short, bacilliform or hairform ( lsts, msts). Abdominal segments I–VIII ( Fig. 62 View FIGURES 57 – 63 ): pds1–5 approximately in line, pds2 and pds4 positioned slightly anteriad; pds1–5 very short, pds2 and pds4 slightly shorter. Sps minutely shorter than prs, long as pds1. Both dpls long as sps. Vpls2 2.5 x longer than vpls1. Lsts short, msts minute. 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 the longest, remaining setae about 0.5 x. Abdominal segment IX ( Fig. 63 View FIGURES 57 – 63 ): ds1–4 bacilliform; ds 2–4 in line; ds3 the longest, remaining three setae about 0.2 x. Both ps bacilliform, about 2x longer than ds1. Both sts hairform; sts1 very short, sts2 minute.