ART. 29 IMMATURE STAGES OF SARCOPHAGID FLIES — GREENE 3 



The number given to each species is the same in the table of 

 species, description, and the figure on the plate. 



The specimens used in this paper are labeled with the number 

 herein given to the species and a reference to the number of this 

 article. 



Unless otherwise stated, the material is located in the national 

 collection. 



I wish to acknowledge my thanks to Dr. R. E. Parker, Dr. J. 

 Bequaert, Dr. F. M. Root, and F. C. Bishopp for the loan and gift 

 of some valuable material used in the preparation of this paper. The 

 main portion of the material herein treated was from the National 

 Collection and the collection of Dr. J. M. Aldrich, which is now a 

 Part of the National Collection. I also had some material from the 

 Gypsy Moth Laboratory at Melrose Highlands, Massachusetts. 



TABLE OF SPECIES PUPARIA 



1. Puparium definitely wrinkled along the segmental lines 2 



Puparium not wrinkled as above 3 



2. Segmental wrinkles distinct on at least half of the puparium; posterior 



cavity shallow, located centrally on the horizontal axis ; posterior spiracu- 

 lar plates smooth without definite lobes. 



No. 1, Sarcophaga cistudinis Aldrich. 

 Segmental wrinkles distinct on the anterior segments 1-4; posterior cavity 

 deep, located on the horizontal axis but mostly above; spiracular plates 

 with three distinct lobes, the inner one short. 



No. 2, Sarcophaga communis, var. ochracea Aldrich. 



3. Posterior end of puparium with three black chitinized points on each side 



and above the posterior cavity ; posterior cavity medium sized, elliptical, 

 located on but mostly below the horizontal axis; posterior spiracular 

 plates with three distinct lobes with all slits slightly arcuate. 



No. 3, Sarcophaga communis Parker. 

 Posterior end of puparium without chitinized points 4 



4. Puparium with a keel or ridge below the posterior cavity .5 



Puparium without a keel or ridge at posterior end 8 



5. A narrow definite keel reaching from the posterior cavity to the anal open- 



ing No. 4, Sarcophaga securifera Villeneuve. 



Without a definite keel but having a definite rounded ridge below the pos- 

 terior cavity 6 



6. A broad, rounded, definite ridge connecting with the two tubercles at the 



anal opening; posterior spiracular plates with three lobes, slits narrow, 

 sinuous ; a narrow extension of chitin on the lower and outer edge of the 



plate No. 5, Sarcophaga cooleyi Parker. 



With a ridge not well developed like the above 7 



7. A broad, flattened, slightly raised surface below the posterior cavity, with 



a large rounded tubercle each side of the anal opening; posterior cavity 

 very large ; spiracular plate with three definite lobes, pointed at the 



base; slits nearly straight No. 6, Agnria affinis Fallen. 



Puparium not as above S 



