TABANUS EQUESTRIS. '77 



31. Tabanus equestris, n. sp. 

 (Plate 5, fig. 6). 



Rufescens ; facie palpisque pallide jlavis; oculis nudis; 

 antennarum articulo tertio infuscato; ahdomine maculis dor- 

 salibus trigonis albidis ; pedibus anticis femoribus omnibus 

 fuscescentibus ; alarum basi fasciaque media fuscescentibus. — 

 (f, Q. Long. 15,5—17 mm. 



Face yellowish-white ; beard of the same color; palpi 

 pale ochraceous ; front rufous , in the 9 moderately broad , 

 with a brown cordiform spot extending upwards in a line. 

 Eyes bare , in the cT reddish-bronze above , with large 

 facets ; below for a third part and on the outward borders 

 blackish, with much smaller facets; in the 9 entirely 

 bronze colored with small facets; even after having been 

 moistened no trace of crossbands is to be seen. Antennae 

 ochraceous; third joint infuscated, rather slender and on 

 its upperside with a trigonal tooth. — Thorax , scutellum 

 and abdomen rufous ; thoracic dorsum a little infuscated , 

 with indistinct stripes; hind margin of the scutellum 

 greyish ; last segments of the abdomen darker ; their hind 

 margin yellowish with small , trigonal , white , dorsal spots ; 

 on the undersurface the pale margins of the segments are 

 broader. Legs and halteres fulvous; the femora and the 

 whole front legs fuscous. Wings at the base brownish- 

 yellow , in the middle with a rather broad brownish cross- 

 band, which issues on the stigma and embraces the discal 

 cell , but does not quite reach the hind margin ; the costal 

 cell is yellow. 



This species seems to be not uncommon in the Sunda- 

 slands; it is represented in the Leyden Museum by a cf 

 from Sumatra (v. Lansberge), two females from Java (Blume 

 and Ludeking) and four females from Borneo (Muller); it 

 was since long time designed in the collection by the late 

 Mr. Snellen van Vollenhoven under the name equestris n. sp. 

 without having been described. 



The species is related to my T. pictipennis (Tijdschr. v. 



Notes from the Leyden IMuseuin, "Vol. "VII. 



