Doratura roesle, Bückle & Guglielmino, 2022

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 : 26-30

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.6342959
persistent identifier	https://treatment.plazi.org/id/039C8791-BF64-156C-E8B8-86BEBCBC30C6
treatment provided by	Plazi
scientific name	Doratura roesle
status	sp. nov.

Treatment

Doratura roesle sp. nov.

( Figs 7C–E View FIGURE 7 ; 9D–G View FIGURE 9 ; 10K, L View FIGURE 10 ; 11E View FIGURE 11 ; 12G View FIGURE 12 ; 19H View FIGURE 19 )

Description. Coloration ( Figs 7C–E View FIGURE 7 ). With the general characters described for the genus Doratura (see above). Central and hind region of vertex at most with indistinct light brown markings, sometimes with small brown spots along hind margin; pronotum light without markings, somewhat fuscous in sagittal part. Fore wings hyaline pale without green tinge and generally without dark markings. Abdomen light with eight longitudinal rows of small markings, central ones very close to each other, divided by noticeably light middle line, middle ones formed of very small spots, lateral two rows more distinct and formed of short longitudinal stripes; in light specimens abdominal markings almost lacking. Females with same pattern of coloration as males.

Measurements. Males: Total body length: 2.95–3.25 mm; width over wings: 1.15–1.28 mm; width of head: 1.07–1.14 mm; length of vertex: 0.48–0.55 mm; length of forewings from shoulder to apex: 0.88–1.00 mm; length of hind tibia: 1.60–1.78 mm.

Females: Total body length: 3.80–4.25 mm; width over wings: 1.20–1.38 mm; width of head: 1.10–1.25 mm; length of vertex: 0.52–0.58 mm; length of forewings from shoulder to apex: 0.95–1.06 mm; length of hind tibia: 1.65–1.90 mm.

Male genitalia. Aedeagus smooth, shaft in lateral view ( Fig. 10L View FIGURE 10 ) equally narrowing towards apex, ventral margin straight or very slightly convex, whole lateral part sclerotized without membranous areas; in ventral view ( Fig. 10K View FIGURE 10 ) basal shield with rather indistinct or lacking latero-apical angles, central part indistinctly widening. Styles ( Fig. 11E View FIGURE 11 ) in dorsal view almost equally curved, not geniculate, with prominent acuminate denticle ± at mid-length, portion basally of denticle slender, lateral apodeme (“talon”) acuminate. Connective with basal portion somewhat shorter than branched portion; basal part parallel, branching with rounded angles. Pygofer with about three long macrosetae on each side near its dorso-caudal margin. Genital plates ( Fig. 12G View FIGURE 12 ) apically with rounded angles, laterally sinuate.

Female genitalia. Pregenital sternite ( Fig. 19H View FIGURE 19 ) with hind margin straight or slightly convex in the middle. Ovipositor in lateral view protruding beyond posterior angle of pygofer barely 0.3 times length from hind margin of pregenital sternite to ovipositor tip.

Fifth instar ( Figs 9D–G View FIGURE 9 ). All the nymphs collected together with adults of D. roesle display a coloration pattern similar to that of D. stylata . Some nymphs are very light, and their coloration pattern cannot easily be discerned.

Diagnosis. Based on the morphology of aedeagus and female pregenital sternite, D. roesle belongs to the D. stylata group. It differs from D. exilis and D. stylata particularly by its proportionally long vertex ( Figs 7C–E View FIGURE 7 ) with ratio length to width including eyes 0.43–0.5 (in D. exilis and D. stylata 0.37–0.43) and by the not geniculate styles ( Fig. 11E View FIGURE 11 ) (in D. exilis and D. stylata distinctly geniculate) with acuminate lateral apodeme, from D. impudica also by its distinctly smaller size ( D. roesle : males maximum 3.25 mm, females maximum 4.25 mm; D. impudica : males minimum ca. 3.9 mm, females minimum ca. 5.3 mm). In coloration and head shape, D. roesle resembles to some degree D. vefele and specimens among the D. vefele complex. In regard of the style or aedeagus morphology, there is equally some affinity to some specimens belonging to the D. vefele complex. D. roesle is distinguished in respect of these specimens, however, by its smaller body size and above all by its proportionally very short fore wings with ratio length (from shoulder to hind margin) to width of head 0.8–0.91 (in specimens of D. vefele and the D. vefele complex 1.03–1.24).

Distribution ( Fig. 63 View FIGURE 63 ). Until now, known only from three localities in the northern part of the Peloponnese Peninsula ( Greece).

Ecology. The material was collected on dry open areas at about 950–1200 m altitude.

Phenology. The specimens (nymphs, males, females) were collected at the end of July and the beginning of August.

Type series. Holotype, male: Greece: Achaia , Kalavryta, Lousiko; 37°58‘11.0‘‘N 22°08‘31.3‘‘E; 960 m; 02.08.2017; Guglielmino & Bückle leg. ( GR10 ); dry pasture, Quercus cf. coccifera, Prunus spinosa, Poaceae, Ononis GoogleMaps .— Paratypes: Same data as holotype; 16 males, 8 females GoogleMaps .— Greece: Achaia , Erymanthos, Elliniko; 38°02‘08.6‘‘N 21°49‘49.3‘‘E; 943 m; 31.07.2017; Guglielmino & Bückle leg. ( GR4 ); spring in forest of Abies, Holoschoenus, Juncus, Carex, Equisetum , dry areas with thistles, Poaceae, Ononis (?), Quercus cf. ilex, Prunus spinosa, Lamiaceae; 11 males, 4 females GoogleMaps .

The type material is deposited in the Department of Agricultural and Forestry Sciences , University of Tuscia, via S. Camillo de Lellis snc, I –01100 Viterbo, Italy (collection Guglielmino) .

Etymology. The species is named after a dear housemaid, once living and working in the house of one of the authors. The species name is a noun in apposition.