4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 6S 



Tribe MILTOGRAMMINI 



Small to medium sized flies, usually with rather short wings and 

 a short, conical abodmen. Ocellar bristles usually differentiated, 

 proclinate. Orbital bristles present in both sexes except in Pachyo- 

 yhtlialmus, in which they are submerged in a second row of frontals; 

 but one frontal row of bristles on either side of vitta, except in Pachyo- 

 phthalmus. Penultimate joint of arista not more than twice as long 

 as wide. Bucca and back of head about the oral 

 cavity never with a chstinct white beard, at most 

 with sparse pale hairs. Eyes bare. Abdomen always 

 bearing macrochaetae. Females with nonpiercing 

 larvipositors. Male genitalia (pis. 1-3) with penis 

 not so higlily cliitinized nor so intricately sculptured 

 as in typical Sarcophaginae; comparatively small 

 and unspecializod, tipped with a membraneous, more 

 or less collapsible hood; two pairs of claspers present, 

 the posterior clasper usually bearing a stout bristle. 

 Apical cell (pi. 4, fig. 24) ending far before the ex- 

 treme tip of the wing, sometimes closed at margin 

 of wing but never long petiolate. Fourth vein with 

 a strong fold at the bend. 



The females in all species that have been studied, 



possess a very short uterus (pi. 4, figs. 20, 22, 25), 



Fig. 1.— Variation in from wliicli arises a large pouch, in wliich the ova 



jHEMlmTERQiTEOR dcvclop to large, naked, active maggots, of which 



posTscuTELLUM. thcrc Is oulv a modcratc number. The female repro- 



LaTERAL aspect. ],• P ■ 11 • i.l-lj.i.V 



A tachinidae ductive organs conform m all species studied to the 

 (tachina mella Group III of Pantcl,^ and the somewhat more rc- 



Walker), B, Mil- i-iiA/Ti. •• • r rn j ■> 



togramminae(Sen- stricted Metopnne series of lownsend.^ 

 DTAiNiA trilineata Tlic lai'vac in all instars resemble the unspecialized 



sakcopha^gTnae Muscoid maggot in general appearance. The first 



{Saiicophaga COM- instar maggots are metapneustic, the posterior spir- 



j^r^^rrosTsci-TELLUM ^^^^' bciug at tlic bottom of a depression; the buc- 



sp, scuTELLUM, 2t cophar}^lgeal apparatus (pi. 5, figs. 29-34) consists of 



FIRST ABDOMINAL 11 1 -1 !_•.•• 1 1- 11 



SEGMENT. A, AND ^ smglc largc, lieavily chitimzed, median hook, 

 c ADAPTED FROM articuhitiug with a slender dorsal rod of the in- 

 termediate region, and two much weaker, thinly 

 chitinized lateral hooks, one on either side of the median; the inter- 

 meihate region is fused to the basal piece without articulation. The 

 second and tliird instar maggots are amphipneustic, the anterior 

 spiracle (pi. 5, fig. 28) consisting of several fingerlike papillae radiating 

 like the rays of a fan. In the last two instars, the mechan hook of 



> Dipteres ft larves entomobies, LaCellule, vol. 26, p. 57, 1910. 

 'An. Ent. Soc. .\iner., vol. 4. p. 130, 1911. 



