346 



PSYCHE. 



[May, 1902 



SOME INSECTS OF THE HUDSONIAN ZONE IN NEW MEXICO.— VIII. 



COMPILED BY T. D. A. COCKERELL. 



DiPTERA. 



The species here listed were collected 

 on the top of the Las Vegas range at 

 the end of June, 1901. The determina- 

 tions are wholly by Mr. Coquillett; the 

 other matter is by Mr. Cockerell. 



Species new to the fauna of New 

 Mexico are marked with an asterisk. 

 Comparing the present list with Coquil- 

 lett's list of the Diptera of Alaska (Pr. 

 Wash. Ac. Sci., 1900), we note that the 

 faunae are very similar. Twelve of our 

 species have been actually taken in 

 Alaska, while several others are repre- 

 sented there by allied forms. The great- 

 est points of difference are: (i.) that 

 we have four of the larger Tachinidae, 

 including three of Pcleteria, a genus 

 not given in the Alaska list ; (2.) that 

 we have four Trypetidae, the Alaska list 

 showing only one. 



* rtychoptcra leiiis., O. S. Also Colorado. 

 SimitUum ochraccuni, Walker. North 



to Alaska, and down to the Middle 

 Sonoran Zone (Mesilla Valley). Its 

 presence at the lower levels is doubt- 

 less due to the migration of swarms. 



* Tabaims sonomensis, O. S. North to 



Alaska. 



* Anthrax catulina, Coq. There are 



no Bombylidae in the Alaska list. 

 38 species of this family are known 

 from New Mexico, and of these 19 

 belong to Anthrax. 



Cyrtopogon callipedilus, Lw. ^^'est to 

 Sierra Nevada. 



* Empis triangula, Coq. North to Alaska. 



Discovered by the Harriman Expe- 

 dition. 



* Chcilosia Jwodiaiia, Bigot. 



* Chcilosia oiridentalis. Will. At Beulah, 



N. M. (Canadian Zone), the genus 

 is represented by C. tristis, Lw. 

 Syrphits ariiiatiis, Fall. N. to Alaska 



* Syrphits intriidcns., O. S. Described 



from the coast range of California, 

 but very close to .S. amalopis from 

 the White Mts., N. H. 



* Sphaerophoria sulphuripcs, Thorns. N. 



to Alaska. 



* Sphaerophoria mehinosa, Will. W. to 



California. 



* Eristalis ohscunis. Lw. N. to Alaska. 



* Myopa dausa, Lw. N. E. to Maine. 



* Panzcria radicum, Fb. N. to Alaska. 



Also at Beulah, N. M. 

 Gonia lapitata, DeG. Down to Mesilla 



Valley. Also European. 

 Pelctcria acnca, Staeger. A northern 



type. 

 Pcletcria tessellata, Fabr. Northern 



and European. 

 Pcletcria robusta, Wied. Down to 



Mesilla. N. to Canada. 



* Cordyhira vittipes, Lw. N. to Alaska. 



* Tcphritis piatypfcra, Lw. N. E. to 



Connecticut. 

 lephritis genalis, Thoms. W. to Cali- 

 fornia ; down to Mesilla, N. M. 



