Scientific Results of the Katmai Expeditions of the 

 National Geographic Society. 



XII. DESCRIPTIONS OF DIPTERA OF THE FAMILIES 

 ANTHOMYIDAE AND SCATOPHAGIDAE. 



John R. Malloch. 

 Illinois Natural History Survey 



In presenting the descriptions of species of the genus 

 Hylemyia I have added a key for their separation and include 

 all of the species of the genus represented in the collections 

 made by Professor Jas. S. Hine. Some of the species are recorded 

 from this continent for the first time but there is no doubt as 

 to their occurrence here as in most cases the specimens have 

 been compared with European examples. Owing to the very 

 great similarity of the species comprising the group I have 

 figured the hypopygia of most of them in order that there may 

 be no doubt as to the identity of the species in my hands and 

 recorded here. It is not at all impossible that some of the 

 species listed as new may be forms previously known from 

 Europe though unrecognized by me. 



Subfamily phaoniin^. 



Phaonia albocalyptrata sp. n. 



Male. Black, slightly shining, head, thorax, abdomen and legs with 

 rather dense bluish gray pruinescence ; orbits and cheeks with the 

 pruinescence slightly silvery. Thorax with four black vittse. Abdomen 

 with a narrow black dorsocentral vitta. Legs entirely black. Wings 

 clear, veins fuscous. Calyptrse and their fringes white. Knobs of 

 halteres fuscous. 



Eyes with moderately dense hairs ; frons at narrowest part over three 

 times as wide as distance across posterior ocelli; orbits with bristles on 

 their entire length, each orbit one-fourth as wide as interfrontalia ; 

 arista almost bare; third antennal segment about 1.75 as long as second; 

 parafacial as wide as third antennal segment, not narrowed below; 

 cheek nearly twice as high as widest part of parafacial, with a series of 

 setul« above the marginal bristles. Two or three pairs of very weak 

 acrostichals among the fine hairs proximad of the suture; prealar 

 bristle a little over half as long as the bristle behind it; postsutural 

 dorsocentrals 4; hypopleura bare; stemopleurals 1:2. Abdomen 



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