156 INSECUTOR INSCITI/E MENSTRUUS 



with a pale silvery-gold pollen except on lateral edges and venter which 

 are reddish and shining. Legs reddish, concolorous with venter, the tarsi 

 dusky blackish. Wings wholly infuscate. Front scale of tegulae smoky- 

 blackish, almost like wings ; hind scale wholly deep smoky-golden, almost 

 matching the shade of abdominsJ pollen as it appears in oblique view 

 with the silvery tinge less apparent. 



Trichoepalpus, new genus. 



Close to Melanepalpus, from which it differs as foUows : Female front 

 at vertex about equal to eye-width or somewhat less. Proboscis beyond 

 geniculation about three-fourths of head-height. Third antennal joint of 

 female one and one-fourth to one and one-third times second. Two or 

 three sternopleural bristles ; two postsutural bristles, being the anterior 

 and posterior ones ; one postacrostichal, being the posterior one ; and no 

 preacrostichal. Scutellum and anaJ segment less densely set with spines ; 

 the latter with sparse arrangement of same on posterior half or less, some- 

 times confined to a subdiscal transverse row with a few weak ones at tip. 

 Whole abdomen densely clothed with long yellowish-gold to reddish-gold 

 pile, longest behind where it nearly equals the foremost spines of anal 

 segment and surpasses the apical spines of same. The anal segment is 

 wide and strongly emarginate, but there are no conspicuous buttocks- 

 bunches of spines, their place being taken by the dense pile which forms 

 in two bunches parted on median line apically and more or less inter- 

 spersed with the black spines. Front taursi of female noticeably widened. 



Reproductive habit, probably leaf-larviposition of colored maiggots. 



Type, Trichoepalpus emarginatus, new species. 



Trichoepalpus emarginatus, new species. 



Length of body, I 1 mm.; of wing, 10.5 mm. Two females; one, 

 Manchi, Ecuador, about 7,500 feet, November 22, 1910, on flowers 

 of Baccharis floribunda ; and one, east base of Huascaray Ridge, about 

 7,000 feet, September 22, 191 1, on foliage. 



Rufous, head and thorax pale golden pollinose, facial plate and cheek 

 grooves more watery. Third antennal joint and arista brown. Occipi- 

 tzJ pile yellowish, rest of head pile black. Parafrontals and mesoscutum 

 showing more or less olive through the pollen. Scutellum a shade lighter 

 than the deeply rufous abdomen, being nearly shade of first two antenna! 

 joints and legs, while frontalia are about shade of abdomen. Wings 

 lightly fuscous throughout, dilute yellowish on basocostal portion. Both 



