Liadopsylla (Basicella) loginovae, VISMARA, 2020

VISMARA, GIULIA, 2020, Corrispondenze e interazioni tra suono spazio e corpo, strategie per un design sonoro dello spazio, Russian Entomological Journal 29 (2), pp. 127-138 : 132-133

Liadopsylla (Basicella) loginovae Shcherbakov, sp.n. Figs 20–21 .

MATERIAL. Holotype forewing PIN 5340 /2645±; Khasurty , 10 km S of Tsakir, Zakamensk district, SW Buryatia, Russia; Lower Cretaceous.

DESCRIPTION. Forewing 3.4 mm long, moderately elongate (2.0:1), widened up to apex of pterostigma, bluntly rounded apically, tornus well developed. Nodal line present, with ir crossvein and RP bend not far from R fork, and break at base of M stem. Costal margin evenly arched; costal space moderately wide. Base of pterostigma marked with slight RA bend, and its boundary with groove posterior to RA. R+M+CuA dividing at 1/5, R stem at 1/3, and M+CuA at 0.4 wing length. R fork moderately wide basally, acute with gently curved RA. RA x1.5 shorter than RP, curved forwards before apex; RP slightly sigmoidal distally. M+CuA stem x1.7 as long as R stem and subequal to R+M(+CuA). M stem half as long as M2 and x1.5 as CuA stem, M fork long and wide (2.2:1). CuA1 nearly thrice longer than CuA stem or CuA2. Clavus relatively wide, with concave posterior margin; Pcu+1A distally running along the margin and joining it near clavus apex. Veins and membrane slightly darkened.

REMARKS. Distinct from the type species in the presence of nodal line with a supernumerary ir crossvein, longer M fork and blunt wing apex.

ETYMOLOGY. To the memory of a Russian expert in psyllids, Marianna M. Loginova.

Figures

Figs 13–21. Liadopsyllidae, forewings; Khasurty, Lower Cretaceous: 13 — Stigmapsylla klimaszewskii gen. et sp.n., holotype (photograph mirrored); 14–19 — Liadopsylla (Basicella) lautereri subgen. et sp.n.: 14, 17 — paratype PIN 5340/1377 (costal margin tucked under); 15– 16 — holotype; 18–19 — paratype PIN 5340/520; 20–21 — L. (B.) loginovae sp.n., holotype (costal margin tucked under; images mirrored; arrows — ir crossvein and M break at nodal line); 15–21 — SEM; 16–18 — forewing base (asterisk — free CuA base); 19 — area of pterostigma (arrows —posterior boundary of pterostigma and RA bend at its base). Scale bar: 13–15, 20, 21 — 0.5 mm, 16–19 — 0.2 mm. Рис. 13–21. Liadopsyllidae, передние крыльЯ; Хасурты, нижний мел: 13 — Stigmapsylla klimaszewskii gen. et sp.n., голотип (фото перевёрнуто Зеркально); 14–19 — Liadopsylla (Basicella) lautereri subgen. et sp.n.: 14, 17 — паратип ПИН 5340/1377 (костальный край подогнут); 15–16 — голотип; 18–19 — паратип ПИН 5340/520; 20–21 — L. (B.) loginovae sp.n., голотип (костальный край подогнут; иЗображениЯ перевёрнуты Зеркально; стрелки — поперечнаЯ жилка ir и раЗрыв M на нодальной линии); 15–21 — СЭМ; 16–18 — основание переднего крыла (ЗвёЗдочка — свободное основание CuA); 19 — область птеростигмы (стрелки —Задний край птеростигмы и иЗгиб RA в её основании). Длина масштабной линейки: 13–15, 20, 21 — 0,5 мм, 16–19 — 0,2 мм.