Aplos, Gnezdilov, 2018

Gnezdilov, Dimir M., 2018, To the revision of the genus Thionia Stål (Hemiptera, Fulgoroidea, Issidae), with description of new genera and new subtribe, Zootaxa 4434 (1), pp. 158-170 : 165-166

Aplos gen. n.

Type species: Issus simplex Germar, 1830 .

Diagnosis. Metope wide, with distinct median carina running from its upper margin to metopoclypeal suture and very weak sublateral carinae visible only in its upper part and joined median carina below upper margin of metope ( Gnezdilov & Poggi 2014, fig. 3); lateral margins convex. Coryphe transverse, 1.5 times as wide as long at midline, with weak incomplete median carina ( Gnezdilov & Poggi 2014, fig. 1). Second and third segments of rostrum are almost equal in length; third segment narrowing apically. Fore wings elongate, surpassing abdominal apex, with narrow hypocostal plate. Forewing vein sequence: R 2, furcating very close to basal cell; M 3, first furcation in basal third of the wing, second furcation in apical third; CuΑ 1 ( Gnezdilov & Poggi 2014, fig. 2). Clavus long, open—Pcu+Α1 runs into apex of clavus. Pcu fusing Α1 after middle of clavus ( Gnezdilov & Poggi 2014, fig. 1). Hind wings 3-lobed, with deep cubital cleft and without coupling lobe on its anterior margin ( Fig. 11 ). Hind wing vein sequence: R 2 r-m 1 M 1 m-cua 1 CuΑ 2 cua-cup 1 CuP 1 cup-pcu 1 Pcu 3 pcu-a1 1 Α1 2 Α2 2. Hind tibia with 2 lateral spines in its apical half. First metatarsomere with a whole row of spines arranged in arc. Dorso-lateral phallobase lobes fused dorsally, poorly sclerotized apically. Each dorso-lateral phallobase lobe with a large hookshaped apical process ( Doering 1938, Pl. 55: 2).

Etymology. Generic name derived from Greek “Απλός” (simple). Masculine in gender.

Composition. Αpparently Thionia bullata ( Say, 1830) (originally Flata bullata Say, 1830 ) also belongs to this genus according to the structure of phallobase bearing hook-shaped apical process, however, this species differs from the type species by furcating subapically ventral aedeagal hooks ( Doering 1938, Pl. 55: 10) and distinct sublateral carinae of metope ( Bartlett et al. 2014, fig. 86D). The correct taxonomic position of this species needs to be confirmed.

Figures

FIGURES 9–11. Thioniina, hind wing. 9—Cheiloceps musca Uhler; 10—Cheiloceps argo (Fennah); 11—Aplos simplex (Germar). Abbreviations: rl—remigial lobe; rvl—remigio-vannal lobe; al—anal lobe.