Nappella Santos-Silva, Nascimento & Drumont, 2019

Santos-Silva, Antonio, Nascimento, Francisco Eriberto de Lima, Drumont, Alain & Kozlov, Anton Olegovich, 2019, Descriptions, notes and new records in south american Cerambycidae (Coleoptera), Papéis Avulsos de Zoologia 59, pp. 1-13 : 6

Nappella Santos-Silva, Nascimento & Drumont , gen. nov.

Type species: Nappella antonkozlovi new species, current designation.

Etymology: Surname of the late Dr. Dilma Solange Napp + “‑ella”, Latin, used to form a diminutive, indicating small size. Feminine gender.

Description: Frons transverse. Eyes coarsely faceted; lower eye lobes about 3.5 times genal length; distance between upper eye lobes shorter than maximum width of one upper eye lobe. Scape without apical cicatrix; slightly, gradually widened toward apex, shorter than antennomere III. Antennomeres filiform, cylindrical (III‑VI cylindrical, slightly widened toward apex), without long and dense setae ventrally; antennomere III slightly longer than IV. Prothorax transverse, with small, acute tubercle laterally,placed at about midlength.Pronotum with three slightly conspicuous gibbosities. Prosternal process notably narrow centrally. Mesoventral process not tuberculate. Elytra convex, without carinae, not depressed along suture, parallel‑sided, pubescent; humerus rounded; elytral length about 2.5 times humeral width; apex nearly rounded; with erect setae throughout. Femora slightly clavate, profemora less so; apex of metafemora reaching about middle of ventrite III. Mesotibiae not notched dorsally. Metatarsomere I slightly longer than II‑III together.

Remarks: The general appearance of Nappella gen. nov., resembles that of Colombicallia Galileo & Martins, 1992 , Graminea Thomson, 1864 , Callia Audinet‑Serville, 1835 , Callisema Martins & Galileo, 1990 , Drycothaea Bates, 1881 , Eumathes Thomson, 1868 , and Hirticallia Galileo & Martins, 1990 . Nappella differs from Callisema , Drycothaea , and Eumathes by the mesoventral process lacking a tubercle (tuberculate in these three genera). It differs from Graminea by the scape lacking an apical cicatrix (present in Graminea ). The new genus can be separated from Callia especially by having the eyes coarsely faceted (finely faceted in Callia ). It can be separated from Hirticallia , which also has eyes coarsely faceted, by the slender body, with elytral length about 2.5 times humeral width (body stouter, with elytral length about 2.0 times humeral width in Hirticallia ), prothoracic lateral tubercle short and not spiniform (long and spiniform in Hirticallia ), and elytra with short erect setae (distinctly long in Hirticallia ). Finally, Nappella differs from Colombicallia by the slender body (wider in Colombicallia ), distance between upper eye lobes smaller than half of the width of one upper lobe (from equal to larger in Colombicallia ), prosternal process notably narrow (about ⅓ of procoxal cavity in Colombicallia ), and mesoventral process narrower than half of width of mesocoxal cavity (wider than half of mesocoxal cavity in Colombicallia ).