304 MAINE AGRICUI.TURAI, EXPERIMENT STATION. I9II. 



4. Triclwnta z'ulgaris Loew. 

 Berlin. Ent. Zeitschr. XIII. 149. 1869. 



Male and female. Length 3.2-3.5 mm. Head and antennae 

 fuscous, basal joints of the latter and palpi yellow. Dorsum 

 of the thorax yellow with 3 fuscous stripes which are some- 

 times confluent; scutellum, metanotum and the pleura except 

 between the fore coxae and the humeri, fuscous. x\bdomen 

 fuscous, each segment except the first with a posterior fascia. 

 Hypo])ygium black. Coxje and legs yellow, tarsi darker ; in the 

 female the last 4 joints slightly tumid below. Wings cinereous, 

 toward the costa yellowish ; cubitus forks under the proximal 

 end of the crossvein. "Md., D. C." 



5. Trichonta obcsa Wihnertz. 

 Verb. Zool.-bot. Ges. Wien. XIII. 854. 1863. 



Female. Length 4.5 mm. Fuscous; basal joints of the 

 antennae, palpi, humeri, legs and halteres yellow. Tarsi dark; 

 femora with l^rown dash on the underside near the base ; hind 

 tarsi slightly shorter than the tibia. Abdomen yellow, with 

 a triangular spot, covering the larger part of each segment. 

 Wings grayish hyaline, the media forks under the base of the 

 radial sector, the cubitus under the center of the crossvein. The 

 male hypopyg'.um is described and figured by Mik in Verb. 

 Zool.-b(^t. Ges. Wien. XXX. 607. 1880. "Europe and Green- 

 land." 



6. Triclwnta bcllula n. sp. 

 Male. Length 3.5 mm. Head black, face, palpi and 4 basal 

 joints of antemire yellow, remainder of flagellum brown ; an- 

 tennae about a third longer than the head and thiM-ax. Dorsum 

 of the thorax yellow with 3 brown stripes ; pleura, scutellum 

 and metanotum largely dark brown ; hairs yellow, setae brown. 

 Abdomen dark brown, posterior margin of each segment pro- 

 duced anteriorly on the sides and anterior part of the venter. 

 yellow; hypoi)ygium dark (Fig. 112). Coxae and legs yellow, 

 tarsi darkened, each femur with a brown spot on the imder- 

 sic'e near the base; hind metatarsus slightly less than half as 

 long as its tibia. Wings hyaline, grayish tinged, anterior veins 

 brown; subcosta ends in Ri beyond the middle of the basal cell: 

 the media forks slightlv distad of l)ase of Us; the cubitus forks 



