ASHMEAD : CLASSIFICATION OF THE CHALCII) FLIES 339 



the records conflict, Diptera are usually associated with the Coleoptera and Lepi- 

 doptera, cither as parasites or hving togetlier in tlie same plant. In hreeding para- 

 sites one cannot always ascertain, with absolute certainty, tlie host of the parasites. 

 Species belonging to the genus Adichii'i Forster are bred from fungi infested with 

 dipterous and coleopterous larvic. 



TABLE OF GENERA. 



1. Females 2 



Males 11 



2. Antenna; 10-jointeil, witli one linfr-joint (scai)e, pedicel, a ring-joint, a 4-jointi'(l i'unicle and a 3-jt>inted 



club) 3 



Antennse 9-jointed, with one ring-joint, or less tlian 'J-jointed 9 



3. Wings hyaline, immaculate 4 



Wings banded or maculate with fuscous. 



Antenuie very long, the flagellum subclavate ; abdomen conically pointed ; po.stmarginal vein 

 short, the knob of the stigraal vein petiolate...AsticllUS Forster (type A. arilhmetrieus Fcirst.). 



4. Abdomen long, conically produced, as long or longer than the head and thorax united 5 



Abdomen short, ovate or cordate and usually shorter than the thorax, never much longer 8 



5. Metanotum short, without carina or at the most with only a trace of a median carina 6 



!Metauotum long, distinctly tricarinate, the surface punctulate or rugulose. 



Flagellum .stout, subclavate, finely pubescent ; abdomen not longer than the head and thorax 

 united or only a little longer Selitrichus Roudani. 



6. Metanotum smooth, impunctate 7 



Metanotum punctate or sculptured. 



Wings almost glabrous, the short pubescence arranged in hair lines, usually conforniing to the 

 spurious veins ; po.stmarginal vein well developed Secodes Forster. 



7. Front wings well pubescent ; postmargiual vein well developed, long. 



Eyes not large, the malar space distinct ; scape of antenna; metallic or metallic except at base. 



Euderus Haliday (type Entedon amplun Walk.). 

 Eyes very large, pubescent, occupying the whole .side of the head and extending to the base of 

 the mandibles, the malar space wanting ; scape verj' slender, white. 



Euophthalmomyia Ashmead, g. nov. (type E. jiallidiprs Ashm.). 

 Front wings almost glabrous, not well pubescent, the pubescence arranged in more or less irregular 

 hair-lines, as in Secodes ; postmargiual vein not well developed, not or scarcely longer than the very 

 short subscssile stigmal vein ; eyes normal, the malar space distinct. 



Omphale Haliday (type 0. salicis Hal.). 



8. Wings bare or nearly, the stigmal vein rather long, the postmargiual vein not developed. 



Flagellum subclavate, not long, the pedicel long, obconical, the funicle 4-jointed, joints 3 and 

 4 wider than long ; head lenticular, wider than the thorax ; parapsidal furrows sharply defined 

 posteriorly, wanting at anterior third ; metathorax short, punctate, with a median carina ; 

 abdomen short cordate Bubbardiella Ashmead, g. nov. (type H. arizonensis Ashm.). 



9. Antenna; 8-jointed with a ring-joint 10 



Antenna; 9-jointed, with a ring-joint, the funicle 3-jointed, the club 3-jointed, the terminal joint 



usually represented by a spur ; wings immaculate, or at most .with a substigmal fascia ; meta- 

 tliorax smooth, without a median carina or lateral folds, but with s|iinicular sulci : :ibdoiiicii not or 

 scarcely longer than the head and thorax united. 



