Cheiloceps magnifrons, Gnezdilov & Sun & Perkovsky, 2023

Gnezdilov, Vladimir M., Sun, Haoran & Perkovsky, Evgeny E., 2023, A new species of the genus Cheiloceps Uhler, 1895 (Hemiptera: Fulgoromorpha: Issidae) from the Dominican amber, Zootaxa 5389 (4), pp. 491-496 : 492-493

Cheiloceps magnifrons sp. nov.

( Figs 1–6 )

Type material. Holotype BFU(A)-0001 Dominican amber. Syninclusions: two Formicidae ( Hymenoptera ), Ptiliidae ( Coleoptera ), Brachycera (Diptera).

Diagnosis. Generally brown. Metope wider than long medially, 1.3 times as wide between the eyes as long medially, with smooth median carina running to postclypeus and weak sublateral carinae joint above metopoclypeal suture. Coryphe slightly shorter than wide between the eyes. Forewings slightly narrowing to widely rounded apices, 2.6–3.0 times as long as wide medially, without hypocostal plate.

Description. Structure. Metope wider than long medially, 1.3 times as wide between the eyes as long medially, with smooth median carina running to postclypeus and weak sublateral carinae joint above metopoclypeal suture ( Figs 2 , 3 ). Metope with traces of larval sensory pits between lateral margins and sublateral carinae. Postclypeus large, convex. Metopoclypeal suture convex. Eyes large, diameter of each eye wider than half of coryphe width. Coryphe slightly shorter than wide between the eyes, with weak median carina or groove (it is not clear); anterior margin obtusely angulately convex; posterior margin concave ( Figs 1 , 4 ). Margins of coryphe keel-shaped. Pedicel elongately bowl-shaped. Rostrum short, with second and third segments are nearly equal in length. Forewings slightly narrowing to widely rounded apices, without hypocostal plate ( Figs 1 , 2 ). Basall cell large, oval. Forewing vein sequence: R 4, firstly furcating at basal cell and posterior branch (R 2) twice furcating apically; ir 3; r-m 2; M 3–5 (left and right wings), firstly furcating at basal third and both branches furcating apically; im 2; CuA 1 ( Fig. 5 ). Clavus long, nearly as long as whole wing, open (Pcu + A 1 running to claval apex). Hind wings well developed, three-lobed, with deep cubital cleft and weak vannal cleft. Hind wing vein sequence: R 2, furcating in its apical third; r-m 1; M 1; m-cua 1; CuA 4, firstly furcating in its apical third and anterior branch (CuA 1) furcating apically; cua-cup 1; CuP 1; cup-pcu 1; Pcu 2, furcating apically; pcu-a 1 1; A 1 2, furcating in its basal third; A 2 2, furcating apically ( Fig. 6 ). CuA and CuP slightly flattened apically, running closely to cubital cleft, but not fused. Pcu and A 1 not fused medially. Legs missed.

Coloration. General coloration brown. Hind wings opaque, with brown veins.

Total length (from the apex of coryphe to apices of forewings). 9.5 mm.

Etymology. The species named after wide metope.

Figures

FIGURE 1. Cheiloceps magnifrons sp. n., holotype, dorsal view. Sclae bar—2 mm.

FIGURE 2. Cheiloceps magnifrons sp. n., holotype, ventral view. Sclae bar—2 mm.

FIGURES 3–6. Cheiloceps magnifrons sp. n., holotype. 3—head, frontal view; 4—head, dorsal view; 5—left forewing; 6— right hind wing. Not to scale.