HERMETIA. 39 



The Hermetiiisle have by some authors been separated from 

 the CLiTELLARHNiE proper, but it seems better to retain them 

 under one subfamily. 



Table of Genera. 



1. Thorax -with a strong side-spine 2. 



Thorax without such spiue 3. 



2 Antennal style bare Ephippium, Latr., p. 45. 



Antennal style thickly pilose, conspi- [p. 47. 



cuous . , Negejtomyia, Big., 



3. Scutellum 2-spined 4. 



Scutellum unspined 6. 



4. Antennal 3rd joint very long, filiform . . Ampsalis, Walk., p. 44. 

 Antennal 3rd joint eloDgate or conical, 



not filiform 5. [p. 49. 



5. Third antennal joint with distinct style Clitellabia, Mg,, 

 Third antennal joint with arista Oxycera, Mg., p. 53. 



6. Abdomen globose, much broader than 



thorax Rtjba, Walk., p. 48. 



Abdomen elliptical or linear 7. 



7. Antennae not longer than head ; 3rd joint 



conical Lasiopa, Bridle, p. 52. 



Antennae longer than head; 3rd joint 

 very elongate or nearly filiform 8. 



8. Abdomen linear, considerably longer 



than thorax ; antennas cylindrical or 



rather flattened Hermetia, Latr., p. 39. 



Abdomen elliptical, barely longer than 

 thorax ; antennas cylindrical, subfili- 

 form Eudmeta, Wied., p. 41. 



Genus HERMETIA, Latr. 



Hermetia, Latreille, Hist. Crust. Ins. xiv, p. 338 (1805) ; Brunetti, 



Ilec. Ind. Mus. i, p. 121 (1907). 

 Thorasena, Macquart, Dipt. Exot. i, pt. 1, p. 177 (1838). 



Genotype, Musca illucens, L. (Tropical America) ; by original 

 designation. 



Head transverse, distinctly wider than thorax; eyes micro- 

 scopically pubescent ; frons broad in both sexes. Antennae with 

 1st and 2nd joints cylindrical, 2nd half as long as 1st ; 3rd very 

 elongate, cylindrical, 5-annulated, with an about equally long, 

 densely pubescent style, shaped like an elongated club. Proboscis 

 rather short, with large prominent labella ; palpi short, cylindrical. 

 Thorax subquadrate, moderately arched ; scutellum semicircular, 

 unspined. Abdomen linear, arched above, considerablj 7 larger than 

 thorax, 5-segmented in <$ , 6 or 7 in $ . Genitalia in J charac- 

 teristic, attached to ventral side of 5th segment, consisting of a 

 piece broadened at base, pointed at tip, apparently membranous, 

 bearing on each side a two-jointed palp-like organ, also mem- 

 branous ; two horny oval valves, probably for enclosing the 



