OK, je continue en 18
19, 21, 24, 25, 26, 27
18
Hind tibia entirely without any concavity ................................................................. 19
----- hind tibia with a pronounced concavity ventrally, in the
apical half of its length: Figure 21c (body length 4.5 – 5.5 mm) (Flight period: April to September; peaks May, September) ................................................................................ pusillus
19 Cerci expanded and protruding, balloon-like: Figures 22d, 23d (hind tibia rounded ventrally, in
basal half of its length, without longitudinal, ventral ridges)...................... 20
-----
cerci not balloon-like and protruding (hind tibia usually with one or more longitudinal ridges ventrally, in
basal half of its length) ....................................................... 21
21
Apical half of surface of
sternite 4 with complex projections: Figures 24a, 24b, 24c ................................................. 22
----- surface of
sternite 4 flat, simple except on posterior margin, which may be deeply cleft medially and extended at each lateral corner into one or more rounded or more or less pointed projections: Figures 34 a - g ........................... 24
Andre Astric : France : ROSENAU : 68128 : 06/10/2023
Altitude : 239 m - Taille : 5 mm
Réf. : 334994
24 Ventral surface of
hind femur without a basal bulge: Figures 30c, 32c, 35c, 36c, 37d, 37e, 38c ............................. 25
----- ventral surface of hind femur with a shallow bulge, basally: Figures 41b, 42c, 42d ................................................... 33
25 Ventral surface of
femur of middle leg without a bulge: Figures 29a, 29c ......................................................... 26
----- ventral surface of femur of middle leg with a
basal bulge: Figure 29b ...... Species A (partim: see also couplet 7) +
26 Posterior margin of
sternite 4 without appendages, or
with one lobe on each side: Figures 34 a - i; grey dust bars on
tergites 3 and 4 broadening slightly, toward mid-line of
tergite and posterior part of
tergite 4 unicolorous with the rest of the
tergite, without pale-coloured band: Figures 32a, 35a, 36d;
tergite 4 often deeply curved, so that its posterior margin is at 45° or more (in side view) to the posterior margin of
tergite 3: Figures 18c, 18d, 38e ............................................................................. 27
----- posterior margin of
sternite 4 with two lobes on each side, the inner pair of which are sharply pointed: Figures 30d, 30e; grey dust bars on
tergites 3 and 4 narrowing progressively towards the mid-line of the
tergite: Figure 30a;
tergite 4 usually with a pale yellow/dirty white band along the posterior margin, widest medially, but sometimes virtually absent: Figures 30a, 30f;
tergite 4 rather flat, not curving very far ventrally (in side view), so that the posterior margin of
tergite 3 is at only a shallow angle to the posterior margin of
tergite 4: Figure 30f (body length 6 – 8 mm) (Flight period: May to September; peaks May, August) ............................................................................................. ruficornis
27 Hairs on
scutellum including many longer than one fifth the median length of the
scutellum: Figures 31b, 31c, 31d.............28
----- none of the hairs on the
scutellum longer than one eighth the median length of the
scutellum: Figure 31a (eye hairs shorter than the length of an anterior ocellus;
sternite 4: Figures 32d, 34a; epandrium: Figure 43a; body length 6 – 7 mm) (Flight period: April; June to August) ....................................................................................................... amoenus +
Là je saute à Figure 33, c =
E. sogdianus où l'antenne correspond bien
et aussi Figure 34, f, g =
E. sogdianus
Figure 37 semble aussi coller.
La période de vol aussi ( (Flight period: May to September; peak August). Mon individu est du 6 octobre, à peine un peu en retard.
Andre Astric : France : ROSENAU : 68128 : 06/10/2023
Altitude : 239 m - Taille : 5 mm
Réf. : 334995
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