Iberolygus Kim, Goula & Jung, 2019
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publication ID |
https://doi.org/ 10.11646/zootaxa.4656.1.9 |
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publication LSID |
lsid:zoobank.org:pub:E87C6991-AF13-4884-9FB8-A7A181B9F1A8 |
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persistent identifier |
https://treatment.plazi.org/id/03ED87A5-FFD5-F440-FF17-2642FBA2FE34 |
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treatment provided by |
Plazi |
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scientific name |
Iberolygus Kim, Goula & Jung |
| status |
gen. nov. |
Genus Iberolygus Kim, Goula & Jung , gen. nov.
( Figs. 1–2 View FIGURE 1 View FIGURE 2 )
Diagnosis: Recognized from other genera of Mirini by body oval, length more than 6.0; general habitus pale with distinct reddish stripes ( Figs. 1 View FIGURE 1 A–C); vertex wider than single compound eye; carina straight dorsally; second antennal segment slender and cylindrical, not clavate, longer than pronotum maximum width; labium long, exceeding hindcoxae ( Fig. 1C View FIGURE 1 ); calli region with two pairs of dark markings ( Fig. 1D View FIGURE 1 ); pronotum distinctly glossy; scutellum weakly tumid laterally, glossy, weakly punctated, covered with dense pubescence; hemelytra weakly glossy, covered with golden pubescence, with stripes along with veins, cuneus with markings connecting to stripe of corium; second and third hindtarsal segments equally long, first segment shorter; left paramere with long and dense setae, hypophysis blunt, apex of hypophysis minorly projected, curved dorso-laterally, sensory lobe prominent with distinct small tooth ( Figs. 2 View FIGURE 2 A–B); right paramere with long and dense setae, hypophysis coiled upwardly, basal part thick, sensory lobe prominent basally and apically ( Figs. 2 View FIGURE 2 C–E); endosoma with long and thick spicule and sclerotized lobes; secondary gonopore as wider as ductus seminis ( Figs. 2 View FIGURE 2 F–G); female genitalia with distinct process in genital chamber ( Fig. 2H View FIGURE 2 ); dorsal structure broadly developed, with spinules ( Fig. 2I View FIGURE 2 ).
Description: General habitus oval, pale coloration with reddish stripes, with hairy dorsal vestiture; head prognathous; vertex glossy, wider than width of single compound eye; carina prominent, dorsally straight; ventral margin of eye touching ventral suture of maxillary plate; total antenna length shorter than body length; first segment longer than vertex width; second segment slender, cylindrical, longer than pronotum maximal length; labrum as long as 1/2 first labial segment; labium exceeding hindcoxae; longitudinal length of collar shorter than width of first antennal segment; calli region weakly swollen, with sparse pubescence; pronotum distinctly glossy, densely and weakly punctate, posterior part with dense pubescence, dorsal longitudinal length as long as 1/2 maximal width; scutellum glossy, slightly tumid laterally, weakly punctate, covered with dense pubescence, scutellum width longer than 1/2 maximal pronotal width; hemelytra weakly glossy, weakly punctate, covered with dense pubescence; claval commissure length longer than longitudinal scutellum length; cuneus widened shaped, as long as width; hind femur and hind tibia longer than body length; second and third tarsal segments equally long, first segment shorter.
Male genitalia: left paramere with long and dense setae, hypophysis blunt, not broadly developed, sensory lobe prominent with small tooth ( Figs. 2 View FIGURE 2 A–B); right paramere with dense setae, basal part of hypophysis thick ( Figs. 2 View FIGURE 2 C–E); endosoma with long and thick spicule and sclerotized and membranous lobes; secondary gonopore as wide as ductus seminis ( Figs. 2 View FIGURE 2 F–G).
Female genitalia: with distinct medial process into genital chamber ( Fig. 2H View FIGURE 2 ); interramal lobe elongated, no finger-like; dorsal structure developed with spinules ( Fig. 2I View FIGURE 2 ).
Type species: Lygus rubrostriatus Wagner, 1971 (original combination).
Etymology: Named after type locality, Iberian Peninsula, in combination with the genus name Lygus Hahn , referring to its affinity with the genus Lygus Hahn ; gender masculine.
Discussion: In his original description, Wagner (1971) discriminates L. rubrostriatus from other “ Lygus ” (including for Wagner the subgenera Lygocoris , Neolygus and Apolygus , presently treated as three separate genera), from “ Exolygus ” (at present named Lygus ) and from Pseudolygus species. Other possible resembling genera in the Iberian Penisula are Taylorilygus (conformation of left paramere completely different, among other characters), and specially Cyphodema spp., a genus including species with dorsal dark stripes, and forefemur longer than mid femur and hind femur. However, in Cyphodema coloration pattern is dark stripes on yellowish general color, and horizontal dark band on corium beside cuneus. Other Iberian genera close to Iberolygus gen. nov. are Agnocoris , Camptozygum and Orthops , but their genitalia, habitus and size are different from Iberolygus gen. nov.
At first sight, this new genus is not reminiscent of the Apolygus because of its relatively large body with distinct stripe pattern coloration on the dorsum. Subsequently, a review of Wagner’s original description (Wagner 1971) and examination of external and genital structures leads to the conclusion that A. rubrostriatus cannot be included within Apolygus . Especially, its female genitalia to have no finger-like structure in interramal lobes can be easily distinguished from female genital structure of Apolygus . Its red-stripped dorsal pattern is also not common in many genera with superficially similar body habitus like the genus Lygus . Iberolygus gen. nov. is similar to the Chinese genus Heterolygus in structures of endosoma. It can be distinguished by pale dorsal coloration, vertex wider than compound eye and cylindrical second antennal segment of female. The pronotal markings characteristic of Hetero- lygus (Zheng & Yu 1990) are missing. The blunt and not narrowly developed hypophysis of left paramere, and thick sensory lobe of right paramere are also different. This genus is also similar to the Palaearctic and Neartic genus Salignus in endosomal structure, but it can be distinguished by pale dorsal coloration, labium exceeding hind coxae, rounded, not strongly curved left paramere and blunt hypophysis of left paramere. This genus is also similar to the Palaearctic genus Yamatolygus in structure of parameres, but can be easily distinguished by general pale coloration, and endosomal structures (see Yasunaga (1992) for detailed illustrations for this genus).
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