Doratura, J. Sahlberg, 1871, J. Sahlberg. A, 1871

Bückle, Christoph & Guglielmino, Adalgisa, 2022, Revision of the genus Doratura Sahlberg (Hemiptera, Cicadellidae, Deltocephalinae) with particular regard to its distribution in Italy and description of four new species, Zootaxa 5112 (1), pp. 1-116 : 61-65

publication ID

https://doi.org/ 10.11646/zootaxa.5112.1.1

publication LSID

lsid:zoobank.org:pub:C2750D92-315A-431F-BCEB-3E20ECD03EA0

DOI

https://doi.org/10.5281/zenodo.6954666

persistent identifier

https://treatment.plazi.org/id/039C8791-BF41-1531-E8B8-8535BC4136B0

treatment provided by

Plazi

scientific name

Doratura
status

 

Key to males (in part additionally with characters concerning the corresponding females)

1. Aedeagus ( Figs 41A–C View FIGURE 41 ) ventrally with two carinae divided by a deep furrow; margin of each carina with row of distinct teeth; styles ( Fig. 41D View FIGURE 41 ) evenly bent with denticle apically of mid-length (female pregenital sternite ( Fig. 34H View FIGURE 34 ) with concave hind margin and triangular median notch)......................................................... D. salina Horváth

-. Aedeagus never with deep ventral furrow dividing two dentate carinae; shaft provided with distinct spinules ( Fig. 23B View FIGURE 23 ) or robust spines ( Fig. 31A View FIGURE 31 ), or ventrally slightly scabrous ( Fig. 10C View FIGURE 10 ) or smooth and shiny ( Fig. 10O View FIGURE 10 )..................... 2

2. Aedeagus dark, ventrally with few (ca. 5–10), but particularly robust and long, black, thorn-shaped spines ( Figs 31A, B View FIGURE 31 ); genital plates laterally strongly sinuate ( Fig. 33A View FIGURE 33 )................................................ D. concors group 3

-. Aedeagus with tooth-shaped spines ( Figs 37A, B View FIGURE 37 ), testaceous, or with small spinules ( Fig. 23B View FIGURE 23 ), or ventrally slightly scabrous ( Fig. 10C View FIGURE 10 ), or completely smooth ( Fig. 10O View FIGURE 10 )............................................................... 5

3. Aedeagus ( Figs 31M–R View FIGURE 31 ) with 1–2 smaller apical spines and ca. 4–7 robust spines in the apical half, shaft in ventral view very narrow, strongly compressed, proximally with large shield-shaped ventro-proximal plate; styles ( Figs 32F, G View FIGURE 32 ) stout, portion apically of denticle short (female pregenital sternite ( Fig. 34D View FIGURE 34 ) strongly protruding caudad with very deep narrow median incision)........................................................................... D. medvedevi Logvinenko

-. Aedeagus shaft ( Figs 31D, G View FIGURE 31 ) less strongly compressed, without shield-shaped ventro-proximal plate, robust spines also in the central part of shaft (female pregenital sternite ( Figs 34A, C View FIGURE 34 ) without median incision).............................. 4

4. Aedeagus ( Figs 31E, G View FIGURE 31 ) with proximal portion of shaft without spines, not widening proximad in ventral view; styles ( Fig. 32C View FIGURE 32 ) stout, portion apically of denticle short (female genital sternite ( Fig. 34C View FIGURE 34 ) abruptly narrowing in basal part, then caudad protruding as tongue-shaped lobe)....................................................... D. rusaevi Kusnezov

-. Aedeagus shaft ( Figs 31C, D View FIGURE 31 ) proximally abruptly widening, proximal portion with spines; styles ( Fig. 32B View FIGURE 32 ) slenderer, portion apically of denticle long and thin (female pregenital sternite ( Fig. 34A View FIGURE 34 ) shorter, hind margin ± semicircular).................................................................................................. D. concors Horváth

5. Aedeagus ( Figs 37A, F View FIGURE 37 ) testaceous, without robust thorn-shaped spines, but ventrally with tooth-shaped spines, arranged in two rows, above all in the apical portion, basal socle very low, fused with shaft (female pregenital sternite ( Figs 34E, F View FIGURE 34 ) very long with protruding rounded hind margin).................................................... D. homophyla group 6

-. Aedeagus with small spinules ( Fig. 23B View FIGURE 23 ), or ventrally slightly scabrous ( Fig. 10C View FIGURE 10 ), or completely smooth ( Fig. 10O View FIGURE 10 )...... 7

6. Aedeagus shaft in lateral view ( Fig. 37C View FIGURE 37 ) basally and medially straight, ventrally slightly concave, apicad abruptly bent dorsad; genital plates ( Fig. 39A View FIGURE 39 ) with rather sharp latero-caudal angle................................. D. homophyla (Flor)

-. Aedeagus shaft ( Figs 37F, G View FIGURE 37 ) ventrally not concave, in its apical half evenly curved; genital plates ( Fig. 39C View FIGURE 39 ) with obtuse laterocaudal angle........................................................................ D. caucasica Melichar

7. Aedeagus ( Fig. 23B View FIGURE 23 ) with spinules of ± equal size distributed evenly on ventral and lateral parts of aedeagus; styles ( Fig. 24A View FIGURE 24 ) ± evenly curved with denticle near mid-length (female pregenital sternite ( Figs 20B, D View FIGURE 20 ) with straight or concave hind margin, with or without slight rounded notch...................................................... D. paludosa group 8

-. Aedeagus with spinules only along its ventral margin ( Fig. 14A View FIGURE 14 ), or ventrally slightly scabrous ( Fig. 10C View FIGURE 10 ), or completely smooth ( Fig. 10O View FIGURE 10 )................................................................................... 10

8. Aedeagus shaft ( Fig. 23G View FIGURE 23 ) proximally with abruptly elevated ventral crest (female pregenital sternite ( Fig. 20E View FIGURE 20 ) with ± straight hind margin without median notch)........................................................... D. iblea D’Urso

-. Aedeagus shaft ( Figs 23B, D View FIGURE 23 ) without abrupt crest, ventrally ± evenly curved (female pregenital sternite ( Figs 20B, D View FIGURE 20 ) with straight hind margin with slight, rarely completely lacking rounded notch)........................................ 9

9. Aedeagus shaft ( Fig. 23B View FIGURE 23 ) slender, dorsal margin almost straight, spinules present also on the apex.... D. paludosa Melichar

-. Aedeagus shaft ( Fig. 23D View FIGURE 23 ) stout, dorsal margin ± curved, apex smooth and shiny........ D. butzele Guglielmino & Bückle

10. Aedeagus shaft ( Figs 14A, E View FIGURE 14 ) with distinct spinules along its ventral margin, arranged in two rows ( Figs 14B, F View FIGURE 14 ); styles ( Figs 14C, G View FIGURE 14 ) slender with long thin apical portion, denticle basally of mid-length (female pregenital sternite ( Figs 19D, E View FIGURE 19 ) with straight hind margin, in the middle slightly convex)...................................... D. marandica subgroup 11

-. Aedeagus shaft without spinules or spines, smooth ( Fig. 10O View FIGURE 10 ) or ventrally slightly scabrous ( Fig 10C View FIGURE 10 )................ 12

11. Aedeagus ( Fig. 14A View FIGURE 14 ) with ventral margin at mid-length abruptly protruding ventrad, apical portion only with few tiny spines.................................................................................. D. marandica Dlabola

-. Aedeagus ( Fig. 14E View FIGURE 14 ) with ventral margin evenly curved, not protruding ventrad in the middle, spines distinctly present until apex.................................................................................... D. jole sp. nov.

12. Styles ( Figs 28H, K, M View FIGURE 28 ) with robust apical portion, towards apex not or only slightly narrowing; medio-apical margin of genital plates ( Figs 29A, C, D View FIGURE 29 ) rounded (female pregenital sternite ( Figs 20I–L View FIGURE 20 ) with ± deep caudal notch)...................................................................................................... D. heterophyla group 13

-. Styles ( Figs 11A, E View FIGURE 11 ) with thin, slightly curved apical portion; (female pregenital sternite ( Fig. 19A View FIGURE 19 ) straight, often in the middle of its hind margin slightly convex, rarely with a ± distinct notch).............................................. 15

13. Genital plates ( Fig. 29A View FIGURE 29 ) very long, latero-apically completely rounded, lateral margin sinuate; styles very long, in dorsal view ( Fig. 28H View FIGURE 28 ) slightly bent, in median view ( Fig. 28G View FIGURE 28 ) straight from basal apodeme to hook-shaped tip; large species of ca. 3.8–4.2 mm (females ca. 4.8–5.6 mm) with long fore wings ( Figs 27A, B View FIGURE 27 ) (length from shoulder to hind margin ca. 1.7–2.1 mm; ratio sutural length of fore wings/head width 0.75–0.85) (female pregenital sternite ( Fig. 20I View FIGURE 20 ) with deep, acuminate or narrowly rounded notch)..................................................................... D. heterophyla Horváth

-. Genital plates short, latero-apically rounded ( Fig. 29D View FIGURE 29 ), or long with distinct latero-apical angle ( Fig. 29C View FIGURE 29 ); styles in dorsal view ( Figs 28K, M View FIGURE 28 ) distinctly curved; smaller species of ca. 3.2–3.9 mm (females ca. 4.1–4.4 mm) with shorter fore wings ( Figs 27C–E View FIGURE 27 ) (length from shoulder to hind margin less than 1.3 mm; ratio sutural length of fore wings/head width 0.46–0.68)... .................................................................................................. 14

14. Styles in dorsal view ( Fig. 28K View FIGURE 28 ) rather abruptly bent in their median portion, apex not hook-shaped in median view ( Fig. 28I View FIGURE 28 ); aedeagus ( Fig. 28C View FIGURE 28 ) in lateral view apicad distinctly narrowed; genital plates ( Fig. 29C View FIGURE 29 ) long (portion protruding from genital valve longer than wide) with distinct latero-apical angle, lateral margin almost straight; (female pregenital sternite ( Fig. 20K View FIGURE 20 ) with distinct, acuminate notch).......................................................... D. kusnezovi Vilbaste

-. Styles in dorsal view ( Fig. 28M View FIGURE 28 ) evenly curved, apex hook-shaped in median view ( Fig. 28L View FIGURE 28 ); aedeagus ( Fig. 28E View FIGURE 28 ) in lateral view ± of equal width; genital plates ( Fig. 29D View FIGURE 29 ) short (portion protruding from genital valve about as long as wide), latero-apically rounded, lateral margin sinuate; (female pregenital sternite ( Fig. 20L View FIGURE 20 ) with shallow, rounded notch........................................................................................... D. rikele Guglielmino & Bückle

15. Genital plates ( Fig. 41K View FIGURE 41 ) very long, apically rounded, protruding beyond genital segment; styles ( Fig. 41I View FIGURE 41 ) slender, evenly curved (female pregenital sternite ( Fig. 34I View FIGURE 34 ) with hind margin straight or very slightly convex in the median portion)........................................................................................ D. horvathi W. Wagner

-. Genital plates ( Fig. 12B View FIGURE 12 ) not protruding beyond genital segment, apex with (sometimes indistinct) median and/or latero-caudal angles............................................................................................. 16

16. Aedeagus ( Figs 26A, D View FIGURE 26 ) in ventral view proximad evenly widening, not forming an abruptly widening laterally carinate ventroproximal shield; denticle of styles directed more ventrad, almost invisible in dorsal view, styles not or indistinctly geniculate in position of denticle ( Figs 26F–H View FIGURE 26 ) (see also the remarks concerning the vefele -complex at the end of this key)............. .................................................................................................. 17

-. Aedeagus ( Figs 10A, B View FIGURE 10 ) forming an abruptly widening laterally carinate ventro-proximal shield; styles ( Fig. 11A View FIGURE 11 ) generally ± geniculate near denticle, or evenly curved, but then denticle directed more mediad, distinctly visible in dorsal view (see remarks at the end of this key)................................................................................. 18

17. Styles ( Figs 26F, G View FIGURE 26 ) with basal portion distinctly more robust than apical one, lateral apodeme securiform; aedeagus ( Figs 26B, C View FIGURE 26 ) evenly but distinctly narrowing towards apex (female pregenital sternite ( Figs 20F, G View FIGURE 20 ) with ± distinct rounded notch in the middle of hind margin)................................................................. D. gravis Emeljanov

-. Styles ( Fig. 26H View FIGURE 26 ) very slender, evenly narrowing from base to apex, lateral apodeme acuminate; aedeagus, in lateral view ( Fig. 26E View FIGURE 26 ), also in its basal portion quite narrow, apical portion only slightly narrower, in ventral view ( Fig. 26D View FIGURE 26 ) very narrow until basal widening (female pregenital sternite ( Fig. 20H View FIGURE 20 ) with ± straight hind margin)............. D. lukjanovitshi Kusnezov

18. Styles ( Figs 11A, E View FIGURE 11 ) with very long and thin apical portion, central denticle at mid-length or basally of mid-length of style, in most cases directed mediad (hind margin of female pregenital sternite ( Fig. 19A View FIGURE 19 ) medially straight or slightly convex)......................................................................................... D. stylata group 19

-. Styles ( Fig. 41O View FIGURE 41 ) with denticle distinctly apically of mid-length and with short apical portion; proximal shield-shaped portion of aedeagus ( Fig. 41N View FIGURE 41 ) in ventral view with distinct angular latero-distal margin (female pregenital sternite ( Fig. 34L View FIGURE 34 ) with distinct notch).......................................................................... D. lobele sp. nov.

19. Vertex long, roughly triangular ( Figs 7C, D View FIGURE 7 ; 15A, B View FIGURE 15 ), ratio length to width including eyes 0.43–0.5; aedeagus ( Figs 10K, L View FIGURE 10 ; 17B, D View FIGURE 17 ) in ventral view narrow, basal shield rather small, ventral margin of shaft smooth, in lateral view not sinuate (see also the remarks concerning the vefele -complex at the end of this key); fore wings without green tinge.................... 20

-. Vertex proportionally shorter, roughly semi-circular, ratio length to width including eyes 0.37–0.43 ( Fig. 6A View FIGURE 6 ); aedeagus ( Figs 10A, D View FIGURE 10 ) in ventral view wider, basal shield well developed, ventral margin of shaft sometimes scabrous, in lateral view often sinuate (if aedeagus narrow and with straight ventral margin, then body size small and forewings proportionally short).... 21

20. Fore wings long ( Figs 15A, B View FIGURE 15 ), ratio wing length from shoulder to hind margin/width of head ≥ 1.03; large species with body size ≥ 3.85 mm (see also the remarks concerning the vefele -complex at the end of this key)............. D. vefele sp. nov.

-. Fore wings shorter ( Figs 7C, D View FIGURE 7 ), ratio wing length from shoulder to hind margin/width of head ≤ 0.91; small species with body size ≤ 3.25 mm ......................................................................... D. roesle sp. nov.

21. Large species ( Figs 8A, B View FIGURE 8 ) of ca. 3.9–4.5 mm (females ca. 5.3–6.0 mm) with long legs (hind tibia ˃ 2.1 mm), ratio length of hind tibia to head width 1.64–1.78; (length of ovipositor from hind margin of pregenital sternite to ovipositor tip ca. 1.9 mm; nymph V ( Fig. 9I View FIGURE 9 ) brownish with diffuse light parts, abdomen with dark sprinkles)................. D. impudica Horváth

-. Smaller species, ratio length of hind tibia to head width 1.43–1.61; (length of ovipositor from hind margin of pregenital sternite to ovipositor tip ˂ 1.35 mm)............................................................................ 22

22. Species of medium size ( Figs 6A–H View FIGURE 6 ) of ca. 2.9–3.65 mm (females ca. 3.55–4.3 mm) with longer fore wings: Length from shoulder to hind margin ≥ 1.25 mm, ratio length from shoulder to hind margin to width of head 0.95–1.24; ventral margin of aedeagus with or without minute spinules, medio-ventral aedeagus carina often doubled, black ( Fig. 10A View FIGURE 10 ); fore wings generally with green tinge; (nymph V ( Fig. 9A View FIGURE 9 ) with distinct light areas on vertex, pronotum and abdomen; lateral parts of tergites V-VI and median part of tergites VIII-IX light)................................................. D. stylata (Boheman)

-. Small species ( Figs 7A, B View FIGURE 7 ) of ca. 2.5–3.1 mm (females ca. 3.35–4.0 mm) with short fore wings: Length from shoulder to hind margin ≤ 1.05 mm, ratio length from shoulder to hind margin to width of head 0.76–1.02 (specimens from Central Italy and the Peloponnese Peninsula may display somewhat higher values); ventral margin of aedeagus never with spinules, medio-ventral aedeagus carina simple, sharp, ± testaceous ( Fig. 10I View FIGURE 10 ); fore wings without green tinge; (nymph V ( Figs 9B, C View FIGURE 9 ) brownish with vertex, median part of pronotum and median and lateral bands on abdomen light); (see also “Remark 1” in the paragraph concerning D. exilis in “Results”).............................................................. D. exilis Horváth

Remarks. In some cases, specimens belonging to the vefele -complex (in Spain, Morocco, Tunisia, see above) may share a part of the characters presented in the key (guide numbers 16 and 19) as exclusive of other taxa (especially of the D. gravis -group or some members of the D. stylata -group).

Key to females

Preliminary remarks. Only a few characters are available for the identification of Doratura females. Besides several morphometric characters (body length, relative and absolute length of wings, length of tibiae, length of the protruding portion of ovipositor), the morphology of the pregenital sternite furnishes particularly helpful characters. Unfortunately, morphometric characters are quite variable, and as to the pregenital sternites, only some Doratura species display a highly derived shape of the pregenital sternite (e.g., D. medvedevi , Fig. 34D View FIGURE 34 ), whereas in others such specific morphological features are missing. Moreover, for some species the number of specimens we could examine was too low for an estimation of the variation range of their characters.

In view of this situation, the key to females presented below is surely insufficient in many regards, as some taxa cannot be identified, and others only by means of rather indistinct differences, which may turn out completely unsuitable after examination of more material. Nevertheless, it may constitute a first attempt, which in the future hopefully will be improved, corrected and elaborated. It may be useful not only for the identification of isolated females, but for the safe assignment of females to the corresponding males, particularly where two or more species occur in the same area.

1. Hind margin of pregenital sternite straight or slightly concave, always with median, sometimes very shallow notch ( Figs 20B, F, I View FIGURE 20 )................................................................................................ 2

-. Hind margin of pregenital sternite strongly protruding caudad ( Figs 34A, B, D View FIGURE 34 ) or slightly convex in the middle ( Fig. 19A View FIGURE 19 ), or straight ( Fig. 19C View FIGURE 19 ), in the latter case without median notch.................................................... 9

2. Hind margin of pregenital sternite with distinct, V-shaped notch ( Fig. 20I View FIGURE 20 )........................................ 3

- Hind margin of pregenital sternite ( Figs 20B, D View FIGURE 20 ) with shallow or semicircular, often indistinct notch................... 6

3. Large species ( Fig. 27A View FIGURE 27 ) (body length ca. 5.3–5.6 mm; width of head ca. 1.35–1.49 mm) with long forewings (length from shoulder to hind margin ca. 1.9 mm; ratio wing length to width of head ca. 1.3–1.4).............. D. heterophyla Horváth

-. Smaller species (body length ca. 4–5 mm; width of head <1.25 mm) with in proportion shorter forewings (length from shoulder to hind margin 0.86–1.34 mm; ratio wing length to width of head generally ˂1.2)................................... 4

4. Hind margin of pregenital sternite ( Fig. 20K View FIGURE 20 ) with distinct lateral angles, between these angles and median notch slightly concave; ovipositor in lateral view protruding from pygofer ca. 0.53 mm ........................... D. kusnezovi Vilbaste

-. Hind margin of pregenital sternite ( Figs 34H, L View FIGURE 34 ) with rounded lateral angles, between these angles and median notch slightly convex or straight; ovipositor in lateral view protruding from pygofer at most ca. 0.48 mm ........................... 5

5. Hind margin of pregenital sternite ( Fig. 34H View FIGURE 34 ) from lateral angles to median notch obliquely directed medio-rostrad; ovipositor in lateral view protruding from pygofer ca. 0.43–0.48 mm; fore wings proportionally longer: ratio wing length from shoulder to hind margin to width of head generally ˃1; fore wings normally with green tinge................... D. salina Horváth

-. Hind margin of pregenital sternite ( Fig. 34L View FIGURE 34 ) from lateral angles to median notch at most very slightly obliquely directed medio-rostrad; ovipositor in lateral view protruding from pygofer only ca. 0.29–0.38 mm; fore wings proportionally short: ratio wing length from shoulder to hind margin to width of head generally 0.8—0.9; fore wings without green tinge................................................................................................. D. lobele sp. nov.

6. Fore wings longer, ratio length from shoulder to hind margin/wing width rarely ˂ 1.4, generally 1.45–1.55; fore wings normally with distinct green tinge, black bands on face and genae very distinct, dark markings on abdomen less pronounced ( Fig. 25A View FIGURE 25 )..................................................................................... gravis Emeljanov

-. Fore wings shorter, ratio length from shoulder to hind margin/wing width generally 1.1–1.4; fore wings pale, without green tinge, but often with dark longitudinal markings; black bands on face and genae in light specimens indistinct, dark markings on abdomen more pronounced............................................................................. 7

7. Pregenital sternite ( Fig. 20L View FIGURE 20 ) proportionally wider (ratio width/length measured on severed flattened sternite ca. 1.9), less protruding caudad, with latero-caudal margin rounded................................. D. rikele Guglielmino & Bückle

-. Pregenital sternite ( Figs 20B, D View FIGURE 20 ) proportionally narrower (ratio width/length measured on severed flattened sternite ca. 1.6), distinctly protruding caudad, with latero-caudal margin more angular............................................ 8

8. Pregenital sternite ( Fig. 20B View FIGURE 20 ) with median notch shallow, sometimes indistinct, rarely completely lacking (see below, remarks)............................................................................ D. paludosa Melichar

-. Pregenital sternite ( Fig. 20D View FIGURE 20 ) with median notch distinct, ± semicircular................ D. butzele Guglielmino & Bückle

9. Hind margin of pregenital sternite straight ( Figs 19C View FIGURE 19 ), or slightly convex in its median portion ( Fig. 19A View FIGURE 19 ).............. 10

-. Hind margin of pregenital sternite ( Figs 34A, B, D View FIGURE 34 ) strongly protruding caudad.................................. 16

10. Vertex long ( Figs 7C View FIGURE 7 , 15A View FIGURE 15 ), roughly triangular, ratio length to width including eyes 0.43–0.5; fore wings without green tinge. .................................................................................................. 11

-. Vertex proportionally shorter ( Fig. 6E View FIGURE 6 ), roughly semi-circular, ratio length to width including eyes 0.37–0.43........... 12

11. Fore wings long ( Fig. 15A View FIGURE 15 ), ratio wing length from shoulder to hind margin/width of head ≥ 1.03; large species with body size ca. 6 mm .............................................................................. D. vefele sp. nov.

-. Fore wings shorter ( Fig. 7C View FIGURE 7 ), ratio wing length from shoulder to hind margin/width of head ≤ 0.91; small species with body size ≤ 4.25 mm ............................................................................ D. roesle sp. nov.

12. Large species ( Figs 8A View FIGURE 8 , 13A, D View FIGURE 13 ) (body length ca. 5.3–5.8 mm) with long legs (hind tibia 2.1–2.65 mm, ratio hind tibia to width of head generally ≥ 1.6); ovipositor length ventrally from hind margin of pregenital sternite to ovipositor tip ca. 1.9 mm, in lateral view protruding from pygofer generally 0.58–0.67 mm; fore wings with green or blue tinge........................................................................ D. impudica Horváth , D. marandica Dlabola , D. jole sp. nov.

-. Smaller species (body length ˂ 4.4 mm); legs shorter (hind tibia ˂ 1.9 mm, ratio hind tibia to width of head generally ≤ 1.6); ovipositor length ventrally from hind margin of pregenital sternite to ovipositor tip ≤ 1.6 mm, in lateral view protruding from pygofer generally 0.3–0.6 mm .......................................................................... 13

13. Small species ( Fig. 7A View FIGURE 7 ) (body length ≤ 4.0 mm) with short fore wings (length from shoulder to hind margin ≤ 1.05 mm; ratio length from shoulder to hind margin/width of fore wings ca. 1.15–1.35) (specimens from Central Italy and the Peloponnese Peninsula may display somewhat higher values); fore wings without green tinge (see also “Remark 1” in the paragraph concerning D. exilis in “Results”)................................................................. D. exilis Horváth

-. Larger species (body length ca. 3.75—4.4 mm) with longer fore wings (length from shoulder to hind margin ˃ 1.05 mm)... .................................................................................................. 14

14. Slender species (width of head ca. 1.10—1.15 mm) with rather short fore wings (ratio length from shoulder to hind margin/ width ca. 1.1—1.2), hind margin of pregenital sternite straight, never convex in its median portion; fore wings without green tinge, light specimens without markings on median and hind area of vertex, prothorax and scutellum, darker specimens with dark ± distinct marking in sagittal line on vertex and/or prothorax and scutellum, but without dark spots on lateral part of central and posterior portion of vertex; dark marking on anterior part of pregenital tergite often line-shaped........................................................................................................... D. iblea D‘Urso

-. More robust species (width of head rarely ˂ 1.15 mm, generally 1.15—1.25 mm, sometimes ˃ 1.25 mm) with longer fore wings (ratio length from shoulder to hind margin/width ca. 1.25—1.5); fore wings often with green tinge, only very dark specimens with dark marking in sagittal line on vertex and/or prothorax and scutellum...................................... 15

15. Hind margin of pregenital sternite ( Fig. 20H View FIGURE 20 ) straight, rarely with indistinct median notch; ovipositor protruding beyond pygofer tip in lateral view ca. 0.7 mm; length of pygofer in dorsal view ca. 0.4 mm; coloration pale without markings on the middle and posterior portion of vertex.................................................. D. lukjanovitshi Kusnezov

-. Hind margin of pregenital sternite ( Figs 19A View FIGURE 19 , 34I View FIGURE 34 ) with median portion generally distinctly convex, more rarely straight; ovipositor protruding beyond pygofer tip in lateral view generally ˂ 0.6 mm; length of pygofer in dorsal view ca. 0.3–0.35 mm; vertex in dark specimens with distinct spots on its middle and posterior portion... D. stylata (Boheman) , D. horvathi Wagner

16. Pregenital sternite ( Fig. 34D View FIGURE 34 ) with deep incision in the middle of its hind margin.............. D. medvedevi Logvinenko

-. Pregenital sternite without incision on its hind margin....................................................... 17

17. Pregenital sternite ( Figs 34B, C View FIGURE 34 ) in its basal quarter with almost parallel margins, posteriorly narrowing in a truncate triangle with slightly concave lateral margins..................................................... D. rusaevi Kusnezov

-. Pregenital sternite in its posterior portion lobe-shaped with convex lateral margins................................ 18

18. Pregenital sternite ( Fig. 34E View FIGURE 34 ) laterally with angular transition to posterior free portion, posterior portion sub-quadrangular, at its base abruptly narrowing, then protruding posteriad with almost parallel margins, widely rounded at its apex; forewings without green tinge........................................................................ D. homophyla Horváth

-. Pregenital sternite ( Figs 34A, F View FIGURE 34 ) laterally with rounded transition to posterior free portion, posterior portion protruding posteriad with narrowing margins, more sub-triangular, apical margin often somewhat truncated with shallow, indistinct or without median notch....................................................................................... 19

19. Larger species, length of vertex ca. 0.53–0.58 mm, ovipositor protruding from tip of pygofer in lateral view 0.53–0.67 mm; forewings pale, straw-coloured........................................................ D. caucasica Melichar

-. Smaller species, length of vertex ca. 0.43–0.48 mm, ovipositor protruding from tip of pygofer in lateral view ca. 0.4–0.5 mm; forewings with distinct green tinge........................................................ D. concors Horváth

Remarks. The abdomen of the female syntype of D. paludosa as presented in Fig. 20A View FIGURE 20 seems to have a pregenital sternite with strongly concave hind margin and semi-circular median notch. In reality, this is largely due to the position of the sternite still integrated in the ventral part of the abdomen, with strong lateral and slight longitudinal curvature, and in view somewhat obliquely from behind (in order to give the maximum extension of the ovipositor). The isolated sternite (after dissection and under a cover slip) would give a different picture, more similar to the specimen from Manziana ( Fig. 20B View FIGURE 20 ).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Poales

Family

Poaceae

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF