More than 80 years without new taxa: analysis of morphological variation among members of Mexican Aeneolamia Fennah (Hemiptera, Cercopidae) support a new species in the genus Author Armendariz-Toledano, Francisco Coleccion Nacional de Insectos, Departamento de Zoologia, Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Cto. Zona Deportiva S / N, Ciudad Universitaria, Mexico City, CDMX 04510 Mexico Author Lopez-Posadas, Misael Adrian Universidad de Sonora, Departamento de Agricultura y Ganaderia, Km 21 Carretera Hermosillo-Bahia Kino, C. P. 83000, Sonora, Mexico Author Utrera-Velez, Youssef Tecnologico de Mexico-Campus Ursulo Galvan, Km 4.5 Carretera Cardel Chachalacas, Ursulo Galvan, Veracruz, Mexico Author Romero Napoles, Jesus Colegio de Postgraduados, Postgrado en Fitosanidad-Entomologia y Acarologia, Km. 36.5 Mexico-Texcoco, Montecillo, CP 56230, Mexico State, Mexico Author Castro-Valderrama, Ulises https://orcid.org/0000-0003-0888-6750 Universidad de Sonora, Departamento de Agricultura y Ganaderia, Km 21 Carretera Hermosillo-Bahia Kino, C. P. 83000, Sonora, Mexico ucastro.11@gmail.com text ZooKeys 2023 2023-01-09 1139 71 106 http://dx.doi.org/10.3897/zookeys.1139.85270 journal article http://dx.doi.org/10.3897/zookeys.1139.85270 1313-2970-1139-71 ECA7E54DE01D401282825FDBB81D11A2 BAC9EB1C9E8750258A2167E352221044 Aeneolamia danpecki Castro, Armendariz & Utrera sp. nov. Figures 6 , 7 Type material. Holotype . HOM-TIP-166, 1 ♂ adult, coll. U. Castro-Valderrama and Youssef Utrera-Velez leg., 28 September 2003, on Paspalum sp., Sola de Vega, 16°27'44.48"N , 97°1'25.73"W , 1715 m a.s.l., Oaxaca state, Mexico. Pinned adult deposited in CNIN (Fig. 6 ). Paratypes . HOM-TIP-167, 1 ♀, same data as holotype; 1 ♀, coll. Cervantes, A. Delgado, C. Mayorga, S. Gamez leg.; 5 km W San Martin Lachila, Mpio Zimatlan , Oaxaca, Mexico , 16°35'39.18"N , 96°52'14.16"W , 12 July 2004. Pinned specimens deposited in CNIN. HOM-TIP-167, 32 ♀, 14 ♂ same data as holotype; 9 ♀, 6 ♂, coll. J. Romero Napoles leg., 28 August 2018, on Pennisetum sp., La Trinidad Zaachila, Oaxaca, Mexico , 16°55'03.84"N , 96°46'07.02"W , 1507 m a.s.l. Pinned specimens deposited in CEAM. Etymology. The epithet is a noun in the nominative singular standing in apposition to the genus Aeneolamia , in honor of Dr. Daniel C. Peck for his contributions to the knowledge of Cercopidae and his friendship with UC-V. Diagnosis. Aeneolamia danpecki Castro, Armendariz , Utrera, sp. nov. is assigned to the genus Aeneolamia by virtue of its tubular aedeagus with a single pair of slender spines attached anteriorly near the middle of the shaft. It can be distinguished from the other known Mexican species of Aeneolamia by the following combination of characters: tegmen dark brown to black, with two incomplete and barely visible transverse bands, one oblique band on the basal third, and another straight band on the distal third or only basal band visible or both absent (Figs 6 , 7 ); the apex of subgenital plates acute with an acuminate pointed lobe and straight lateral edges (Fig. 2I ), the primary apical spine of parameres long and thin spine with a continuous curvature that is not angulated (Fig. 2F ) and secondary subapical spine of parameres with two rounded acute lobes similar in size and shape (Fig. 2L ); aedeagus spines slightly sinuous conspicuously curved upward and touching the superior margin of phallobase, tips bent to form an almost 90° angle (Figs 2O , 8A, B ). Figure 6. Male adult of A. danpecki (Holotype). Sola de Vega, Oaxaca A dorsal view B ventral view C lateral view D head in dorsal view E head in ventral view F prothorax in dorsal view G head in lateral view H abdomen in ventral view I anterior section of wing J mounted holotype K genital vial and labels of holotype. Figure 7. Female adult of A. danpecki (Paratype). Sola de Vega, Oaxaca A dorsal view B ventral view C lateral view D head in dorsal view E head in ventral view F prothorax in dorsal view G anterior section of wing H abdomen in ventral view I head in lateral view J median section of wing K distal section of wing. Description. Male measurements. Lateral view length ( N = 15) 7.45 +/- 0.51 mm; width of head in dorsal view ( N = 15) 1.75 +/- 0.12 mm. Head . Dorsal view (Fig. 6A, D ): black with brown setae; eyes black (discolored in figures); vertex black with median carina that originates in posterior margin of head and extends to tylus, a small depression between eye and median carina elongated and black, without setae, ocelli as close to each other as width of an ocellus; tylus quadrangular and black, with median carina. Ventral view (Fig. 6B, E ): postclypeus black, inflated, with median carina black; anteclypeus black; basal segment of rostrum light brown in middle with black sides, distal segment black, reaching mesocoxae; antennae with scape and pedicel black to light brown, basal body of flagellum light brown, setae on pedicel scarce, flagellum brown, basal body of flagellum subcylindrical, smaller than pedicel and with arista. Lateral view (Fig. 6C, G ): postclypeus black, convex, lateral grooves slightly marked. Thorax . Dorsal view (Fig. 6A, F ): pronotum black with brown setae, punctate, hexagonal shape without carina, anterior zone with irregular depressed areas, one on each side, anterior margin straight, lateral anterior margin straight, lateral posterior margin slightly grooved, posterior margin grooved. Scutellum black, apex light brown in some specimens. Ventral view (Fig. 6B, E ): with hind wing transparent light brown, venation brown-reddish, setae on both faces light brown; prosternum black to light brown, mesosternum black to light brown, metasternum light brown to reddish; fore legs dark brown, and meddle legs dark brown, with trochanters dark brown to light brown; hind legs with coxae, trochanters, femurs light brown with reddish tints or reddish, tibiae and tarsi dark brown to black; tibiae with two lateral spines and an apical crown with two rows of spines, basal spine small, distal spine 2 x longer than basal one, basal spine same size as apical crown spines; basitarsus with two rows of spines covered with scarce setae. Lateral view (Fig. 6C, I ): pronotum not curved; tegmen dark brown to black, with two incomplete and barely visible transverse bands, one oblique band on basal third and another straight band on distal third or only basal band visible or both absent, the junction between Cu and R brown. Abdomen . Ventral view (Fig. 6B, H ): black, except posterior and lateral edges of each sternite reddish, last sternite reddish and subgenital plates black or dark brown. Genitalia . Pygofer in lateral view (Figs 2C , 9A ): lateral digital process, superior and inferior margins subequal in length, at the level of the inferior margin of the anal tube with the apex directed forward to the anal tube; subgenital plates in ventral view (Figs 2I , 9B ) with lateral edge straight, interior margins parallel, not touching distally, wide along almost entire length, but not truncated apex, with shape acute, and tip acuminate with small hook. Paramere in lateral view (Fig. 9A, C ): resting on subgenital plates, basal two-thirds broad and last third curved and tapered at tip to form a long hook, with two dorsal processes, one rounded mesal process with setae, another small process where the primary apical spine like-hook and the lateral secondary subapical spine converge, the primary apical spine long and slender with a continuous non-angulated curvature, sharp point and sclerotized; the lateral secondary subapical spine with two rounded lobes similar in size and shape, superior lobe sclerotized; inferior margin straight, distally curved to form a long spine like-hook. Aedeagus in anterodorsal view (Fig. 2R ): bottle-shape with a thin apex, two thin, sinuous spines touching phallobase, tips as small hooks and hugging phallobase. Aedeagus in lateral view (Figs 2C, O , 8A, B , 9A ): tubular, wide at base, abruptly narrowed where two lateral spines join shaft, lateral slightly sinuous spines touching superior margin of phallobase, and tips bent to form an almost 90° angle, apex acute, gonopore apical. Figure 8. Lateral view of aedeagus of Mexicans Aeneolamia spp. A, B A. danpecki (paratype) C A. albofasciata D A. contigua . Figure 9. Genitalia of A. danpecki (paratype). Sola de Vega, Oaxaca A pygofer with phallobase, aedeagus and left paramere, lateral internal view B subgenital plates and parameres, ventral view C left paramere, lateral external view. Female measurements. Lateral view length ( N = 15) 8.39 +/- 0.07 mm; width of head in dorsal view ( N = 15) 2.06 +/- 0.01 mm. Same characteristics as the male, except larger and posterior and lateral edges of each sternite light brown or reddish (Fig. 7A-K ). Distribution. Oaxaca state, Mexico (Fig. 10 ). Figure 10. Geographical records of the three Mexican Aeneolamia species. Host. Paspalum sp. and Pennisetum sp. Remarks. Aeneolamia danpecki has black or dark brown subgenital plates with an acute end. In the type of material, San Martin Lachila is a municipality and not part of the Municipality of Zimatlan . Aeneolamia danpecki was recognized as distinct for the first time as " Aeneolamia aff. albofasciata (Lallemand, 1939)" by Lopez-Posadas (2021 : 63).