Abana arnetti Young 1968

Abana arnetti Young, 1968 (Figs. 4, 5) Abana arnetti Young, 1968: 150 [n. sp.]. Diagnosis. Body coloration (Figs. 4A–D, 5A, B) mostly dark yellow and brown; anterior portion of crown (Fig. 4A, C) and dorsal portion of frons (Fig. 4B, D) with light coloration, continuously darker ventrally; pronotum (Figs. 4A, C, 5A) castaneous, darker near anterior margin; forewing (Fig. 4A–D, 5A–D) coloration not sexually dimorphic. Crown anterior margin (Fig. 4A, C) broadly rounded; anterior portion (Fig. 4B, D, 5B), in lateral view, straight, not inflated; disk without a distinct depression; M-shaped elevation bordering posterior margin absent. Connective (Fig. 4G) arms almost parallel; base of arms with a V-shaped dorsal rim. Style (Fig. 4G) with apodeme wide and long, 0.8 times as long as apophysis length; inner lobe rounded; apical portion almost as wide as long; extending as far as connective apex. Aedeagal shaft (Fig. 4H–J) with anterodorsal projections wide and short. Dorsal connective (Fig. 4H–J) sclerotized; submedian acute process conspicuous. Redescription. Total length: males (n = 2) 18.5–18.7 mm, females (n = 1) 20.4 mm (excluding ovipositor), 21.2 mm (including ovipositor). External structures. Crown (Figs. 4A, C, 5A) without pubescence; anterior margin broadly rounded; in lateral view, anterior portion (Fig. 4B, D, 5B), straight, not inflated, forming an acute angle with frons; disk without a distinct depression; posterior margin M-shaped elevation absent. Ocelli located on imaginary line between anterior eye angles; each slightly closer to adjacent anterior eye angle than to midline. Frons flattened medially. Pronotum (Figs. 4A, C, 5A) surface without pubescence. Forewing (Figs. 4A–D, 5A, B) with punctures arranged in lines bordering veins; base of fourth apical cell aligned or slightly more distal than base of third apical cell. Hind legs with femoral setal formula 2:0:0 or 2:1:0. Other characters as in generic description. Coloration. Body coloration (Figs. 4A–D, 5A, B) mostly brown; brochosome cover may give a blue to purple tinge to most of wing. Crown (Figs. 4A, C, 5A) dark yellow, except for two triangular brown maculae on posterior portion extending from antennal ledges to midline of crown on posterior margin. Frons (Figs. 4B, D, 5B) with upper two-thirds dark yellow, continuing yellow area of crown; ventral third brown, as well as clypeus. Gena (Figs. 4B, D, 5B) with anterodorsal portion brown, continuing brown area of crown to frons and clypeus; posteroventral portion dark yellow. Pronotum (Figs. 4A, C, 5A) castaneous, except for broad brown anterior marginal stripe; thorax (Figs. 4B, D, 5B), in lateral view, mostly dark yellow, with some brown areas of variable sizes on all pleural sclerites. Forewing (Figs. 4A–D, 5A, B) dark brown, lighter basally. Legs (Figs. 4B, D, 5B) almost completely brown; coxae of all legs, each with a dark yellow macula. Abdomen brown, with dark yellow areas, mostly at lateral margins. Male terminalia. Pygofer (Fig. 4E) ventral margin, in lateral view, with distinct median concavity, preapical region convex. Subgenital plates (Fig. 4E), in lateral view, ending clearly before pygofer apex. Connective (Fig. 4G) with arms almost parallel; base of arms with a V-shaped dorsal rim. Style (Fig. 4G) with apodeme wide and long, 0.8 times as long as apophysis lenght; inner lobe rounded; angle formed between preapical lobe and apical portion almost right; apical portion subquadrate, almost as wide as long; extending as far as connective apex. Aedeagal shaft (Fig. 4H–J), in lateral view, with preapical dorsal spiniform process almost attaining (lectotype) or not dorsal margin of lateral projections; anterodorsal projections broad and short. Dorsal connective (Fig. 4H–J) sclerotized; submedian acute process conspicuous. Other characters as in generic description. Female terminalia. Abdominal sternite VII (Fig. 5C), in ventral view, with a pair of lateral dentiform projections on median third of posterior margin; area in between lateral projections projected posteriorly as a bifurcate process. Second valvula (Fig. 5G), in lateral view, with 82 separated teeth on dorsal margin. Gonoplac (Fig. 5I) apex rounded. Other characters as in generic description. Distribution. Panama (Colón and Panamá Oeste provinces). Before this work, this species was known for Barro Colorado Island (Panamá Oeste Province) and Gatún (Colón Province) in Panama (Young 1968), here, its distribution is expanded to Gamboa in Colón (Fig. 30). Material examined. Type material: Holotype, ♂ (examined based on photographs of habitus and terminalia): PANAMA: Panamá Oeste: Barro Colorado Island, C.Z., 1944-xi-22–24, at light, R. H. Arnett, Jr. (USNM). Other specimens: PANAMA: Colón: 1 ♂, 1 ♀ Gatun C. Z., Tres Rios plantation, 1930-iii, T. O. Zschokke (NCSU); 1 specimen without abdomen, Gamboa, Canal area, Pipeline Road, 3 km NW Gamboa, 1995-iv-09, C. Stockwell (BYU). Remarks. Abana arnetti is similar to A. ochracea sp. nov.; however, it can be distinguished from the latter by the following characters: (1) anterior margin of crown (Fig. 4A, C) broadly rounded (subtriangular to triangular in A. ochracea sp. nov., Fig. 15A, C), (2) crown disk (Fig. 4A, C) without a depression (present in A. ochracea sp. nov., Fig. 15A, C), (3) male pygofer (Fig. 4E) with a preapical concavity on ventral margin (absent in A. ochracea sp. nov., Fig. 15E), (4) base of connective arms (Fig. 4G) with a dorsal V-shaped rim (rim absent in A. ochracea sp. nov., Fig. 15G), (5) style (Fig. 4G) with apical portion as long as wide (twice longer than wide in A. ochracea sp. nov., Fig. 15G), (6) apodeme of style (Fig. 4G) wide and long (narrow and short in A. ochracea sp. nov., Fig. 15G), and (7) dorsal connective (Fig. 4H–J) sclerotized with a conspicuous submedian acute anterior process (inconspicuous in A. ochracea sp. nov., Fig. 15H). The general coloration (Figs. 4A–D, 15A–D) of the two species is somewhat similar, however, A. arnetti can be clearly distinguished by its general dull yellow and mostly brown coloration, and by the coloration of the pronotum (Fig. 4A, C), being completely brown (ochraceous yellow in A. ochracea sp. nov., Fig. 15A, C). No barcode sequence information was obtained for this species because specimens were very old.