Veprius presbiter (Rondani)

González, Christian R. & Flores, Paola, 2004, Comparative study of mouthparts of three species of horse flies of the tribe Pangoniini of Chilean distribution (Diptera: Tabanidae), Zootaxa 579, pp. 1-15 : 8-9

Veprius presbiter (Rondani)

MALE

Mandibles: Absent.

Lacinia : ( Fig.14 ). Total mean length = 571 µm (n = 10). Greatest mean width = 60 µm (n = 10). Apex blunt, without teeth. Dorsal surface with abundant micropilosity covering the entire surface to the apex. Ventral surface smooth, bare.

Labrum: ( Fig. 15 ). Total mean length = 679.5 µm (n = 10). Greatest mean width = 100 µm (n = 10). Apex blunt and trifid, without microteeth. Dorsal surface medially bare with little medial swelling; microtrichiae long and thin, and more abundant toward the margins, where they are intermingled with abundant micropilosity that extends to the apex. Ventral surface smooth, bare.

Hypopharynx: ( Fig. 16 ). Total mean length = 691 µm (n = 10). Greatest mean width = 105.5 µm (n = 10). Apex rounded, without micropilosity. Opening of salivary duct approximately 130 µm before the apex, without microtrichiae or micropilosity. Ventral and dorsal surface smooth, bare.

FEMALE

Mandibles Absent.

Lacinia : ( Fig. 17 ). Total mean length = 575 µm (n = 10). Greatest mean width = 70 µm (n = 10). Apex rounded. Dorsal surface without teeth, entirely covered with abundant and uniform micropilosity, abruptly diminishing in size toward the apex. Ventral surface smooth, bare.

Labrum: ( Fig. 18 ). Total mean length = 590.5 µm (n = 10). Greatest mean width = 154 µm (n = 10). Apex blunt, without microteeth. Dorsal surface rough, with a medial swelling. Microtrichiae abundant, long and thin, directed medially and apically, forming a column when united, bare proximally; without marginal micropilosity. Ventral surface smooth, bare.

Hypopharynx: ( Fig. 19 ). Total mean length = 604.5 µm (n = 10). Greatest mean width = 110 µm (n = 10). Apex acute. Dorsal surface smooth, bare; salivary duct opening approximately 200 µm before the apex, without microtrichiae and micropilosity. Ventral surface smooth, bare.

Figures

FIGURES 14 ­ 16. Veprius presbiter, male. 14, dorsal view of laciniae; 15, dorsal view of labra; 16, ventral view of hypopharynx. Scale bars 14, 15: 10 µm; 16: 100 µm.

FIGURES 17 ­ 19. Veprius presbiter, female. 17, dorsal view of laciniae; 18, dorsal view of labra; 19, ventral view of hypopharynx. Scale bars: 10 µm.