Dasybasis testaceomaculata (Macquart)

González, Christian R., Brevis, Karina, Miranda, Carmen & Sotomayor, Arlen, 2005, Comparative study of mouthparts of the female of two species of Dasybasis Macquart from Chile (Diptera: Tabanidae), Zootaxa 1058, pp. 35-41 : 38

Dasybasis testaceomaculata (Macquart)

Mandibles: ( Fig. 5 ) Total mean length = 0.345 mm. Greatest mean width 0.021 mm. Medial margin curved, pointed and with triangular teeth; lateral margin without teeth. Apex rounded, with apical pointed teeth and without triangular teeth. Ventral and dorsal surface bare.

Lacinia : ( Fig. 6 ) Total mean length = 0.31 mm. Greatest mean width 0.006 mm. Apex of the dorsal surface with 2–8 teeth, flattened apically and more erect proximally, retrorse. Dorsolateral surface with long, not uniform and abundant micropilosity. Dorsomedial surface, distal to the apical teeth, bare. Ventral surface bare.

Labrum: ( Fig. 7 ) Total mean length = 0.294 mm. Greatest mean width 0.041 mm. Apex blunt. Dorsal surface with sparse, short microtrichiae; median surface swollen, bare. Apex with semi erect and triangular apical microteeth and circular depressions. Ventral surface without micropilosity.

Hypopharynx: ( Fig. 8 ) Total mean length = 0.26 mm. Greatest mean width 0.018 mm. Apex acute. Without micropilosity or other ornamentation. Dorsomedial surface smooth, bare; salivary duct opening in the apex. Ventral surface rugose, bare.

Figures

FIGURES 5 – 8. Dasybasis testaceomaculata (Macquart), females. 5 mandible; 6 dorsal view of laciniae; 7, dorsal view of labra; 8, ventral view of hypopharynx. Scale bars 5, 6, 7: 10 um; 8: 100 um.