Neapion (Neotropion), 1990

Sousa, Wesley Oliveira De & Ribeiro-Costa, Cibele Stramare, 2018, Two new Brazilian species of Neapion Alonso-Zarazaga, 1990 subgenus Neotropion Alonso-Zarazaga, 1990 with a key to South American species (Brentidae: Apioninae), Zootaxa 4402 (3), pp. 551-562 : 560

Key to species of Neapion (Neotropion) of South America

1 Vestiture dense ( Fig 1-3 ); elytral intervals convex, with raised areas in intervals 2, 4, 5, 6 ( Fig. 6 )................................................................................................. N. (Neotropion) marquesae sp. n.

- Vestiture sparse; elytral intervals flat, without raised areas ( Fig 15, 16 )........................................... 2

2 Rostrum in side view flat ventrally at mesorostral level ( Fig. 16 ); elytral vestiture with light scales ( Fig. 15 ).............. 3

- Rostrum in side view convex ventrally at mesorostral level; elytral vestiture with light and dark scales.................. 4

3 Integument dark reddish brown; mesorostrum subequal to width of prorostrum; elytral intervals with scales uniformly arranged; length less than 2 mm; pedon in profile with ventral margin at apex produced slightly; internal sac with ‘tuning-fork’ shaped sclerite 515µm long; tegmen with fenestrae narrowly separated, about 0.16 times fenestrae width, prostegium not bifid.................................................................. N. (Neotropion) americanum (Wagner, 1908)

- Integument dark brown; mesorostrum larger than prorostrum; elytral intervals with some dense area of scales, forming one spot on each of intervals 1–4 at posterior median region of elytra ( Fig. 15 ); length greater than 2.5 mm; pedon in profile with ventral margin not produced; internal sac with ‘tuning-fork’ shaped sclerite 680 µm long; tegmen with fenestrae widely separated, about 0.7 times fenestrae width, prostegium medially bifid ( Fig. 19 )................ N. (Neotropion) diringsi sp. n.

4 Scutellum ovate, slightly longer than wide; elytra in profile convex; pedon in profile with dorsal margin at apex produced slightly; internal sac with ‘tuning-fork’ shaped sclerite 455 µm long; tegmen with fenestrae widely separated, about 0.7 times fenestrae width, prostegium not bifid...................................... N. (Neotropion) lebasii (Gyllenhal, 1839)

- Scutellum rectangular, more than twice as long as wide, posteriorly forming slender, awl-shaped projection; elytra in profile acutely gibbose; pedon in profile with dorsal margin not produced; internal sac with ‘tuning-fork’ shaped sclerite 550 µm long; tegmen with fenestrae narrowly separated, about 0.13 times fenestrae width, prostegium medially bifid..................................................................................... N. (Neotropion) peculiare (Wagner, 1909)

Figures

FIGURES 1–6. Neapion (N.) marquesae sp. nov.: paratype female, dorSal (1) and lateral vieW (2), holotype male, lateral vieW (3); head, paratype female (4) and holotype male, dorSal vieW (5); female, lateral vieW (6).

FIGURES 15–19. Neapion (N.) diringsi sp. nov.: paratype female, dorSal (15) and lateral vieW (16); Spiculum gaStrale (17); peniS, dorSal vieW (18); tegmen, dorSal vieW (19).