Spathicerula Gnezdilov, 2023

Gnezdilov, Vladimir M. & Neimorovets, Vladimir V., 2023, Revisionary notes on the genus Adelungia Melichar, 1902 (Hemiptera: Cicadellidae Megophthalminae), with the description of a new genus, Zootaxa 5284 (3), pp. 564-574 : 568

Genus Spathicerula Gnezdilov , gen. nov.

Type species: Adelungia calligoni Oshanin, 1908 .

Diagnosis. Head with a long straight process directed at obtuse angle to horizontal plane of head ( Figs 1B , 4A–C , 5D–E , 6 , 7C–G ). Aedeagus with pair of basal processes laterally ( Fig. 8C–D ) and aedeagal shaft flattened dorso-ventrally, with serrated lateral margins.

Etymology. Generic name is the combination of Greek σπάΘΗ (saber) and κερος (corn) referring to the head process of the type species.

Species composition and distribution. Monotypical genus widely distributed from northern Kazakhstan, Uzbekistan, and northeastern Turkmenistan to southeastern Iran ( Fig. 10 ).

Figures

FIGURE 1. Adelungiina: A: Adelungia elegans Melichar, 1902 (after Melichar 1902), B: Spathicerula calligoni (Oshanin, 1908) (after Oshanin 1908). Not to scale.

FIGURE 4. Spathicerula calligoni (Oshanin, 1908) (Adelungia breviceps Kusnezov, 1931, male lectotype): A: dorsal view, B: lateral view, C: front view, D: labels. Scale bar—1 mm.

FIGURE 5. Adelungiina:A: Adelungia primigena Dlabola, 1984, holotype, dorsal view, B: same, lateral view, C: same, labels, D: Spathicerula calligoni (Oshanin, 1908) (Adelungia tridigitata Dlabola, 1984, holotype), dorsal view, E: same, lateral view, F: same, labels. Scale bar—1 mm.

FIGURE 6. Spathicerula calligoni (Oshanin, 1908): A: female, Turkmenistan (Merv), lateral view, B: same, front view, C: female, Kazakhstan (Kense), lateral view, D: male, Turkmenistan (Repetek), lateral view, E: male, Uzbekistan (Dzhar-Kurgan), lateral view, F: female, Uzbekistan (Dzhar-Kurgan), lateral view. Scale bar—1 mm.

FIGURE 7. Adelungiina, head (antennae not figured), in lateral view: A: Adelungia elegans Melichar, 1902, male lectotype, B: Adelungia elegans Melichar, 1902, male paralectotype, 5th instar larva, C: Spathicerula calligoni (Oshanin, 1908), male, Uzbekistan (Dzhar-Kurgan), D: same, female, Uzbekistan (Dzhar-Kurgan), E: same, male (Adelungia breviceps Kusnezov, 1931, lectotype), F: female, Turkmenistan (Merv), G: female, Kazakhstan (Kense). Scale bar—1 mm.

FIGURE 8. Spathicerula calligoni (Oshanin, 1908) (paralectotype of A. breviceps), Turkmenistan (Uch. Adzha), male terminalia:A: genital block, lateral view, B: same, ventral view, C: aedeagus, lateral view, D: same, ventral view, E: connective, ventral view, F: same, lateral view, G, H: style, lateral view, I: sternal apodemes of sternite I, J: sternal apodemes of sternite II, K: tergal apodemes of tergite II. Not to scale.

FIGURE 10. Distribution of Adelungia Melichar, 1902 and Spathicerula Gnezdilov gen. nov.