NO. I BLACK FLIES OF GUATEMALA — DALMAT 2/5 



States National Museum, the holotype, allotype, and other paratypes 

 in the collection of Herbert T. Dalmat. 



OTHER SIMULIUM SPECIES COMMONLY REFERRED TO IN THE 

 LITERATURE AS BEING PRESENT IN GUATEMALA 



Each of the species listed below has been referred to in the literature 

 as existing in Guatemala. Simulium (Hearlea) deleoni Vargas and 

 Simulium virgatum Coquillett have been considered by some to be the 

 correct names for synonymous species described from Guatemala. 

 In each case, the valid name for the species is given after the equality 

 sign or in the explanation following the listing of the particular species. 



Simulium avidiim Hoffmann, igy>{i) =^ Simulium {S.) metallicum Bellardi, 

 1859. 



Simulium boydi De Leon, ig44 = Simulium (L.) haematopotum Malloch, 1914. 



Simulium (Hearlea) deleoni Vargas, 1945(b). 

 Vargas, Martinez, and Diaz (1946) believed Simulium capricornis DeLeon, 



1944 to be a synonym. However, they later considered the two species to be 



distinct. S. deleoni has not been found in Guatemala to date. 



Simulium diasi DeLeon, ig44 =z Simulium (Eusimulium) aureum (Fries), 1824. 



Simulium guatemalensis De Leon, ig44 := Sitnulium (S.) jacumbae Dyar and 

 Shannon, 1927. 



Simulium mooseri Dampf, ig27 = Simtdium (L.) callidum Dyar and Shannon, 

 1927. 



Simulium pseudohaematopotum Hoffmann, 1930(g) =i Simulium (L.) haemato- 

 potum Malloch, 1 91 4. 



Eusimulium turgidum Hoffmann, ig3o(g) =: Simulium (Z).) mexicanum Bel- 

 lardi, 1862, 



Simulium (Gigantodax) vargasi DeLeon, ig44^ Gigantodax mrighti Vargas, 

 Martinez, and Diaz, 1944. 



Simulium virgatum Coquillett, 1902. 

 Listed as present in Guatemala by various authors. In 1945(a), Vargas listed 



Simulium (Dyarella) rubicundulum Knab as a synonym of this species and 



Stone (1948) also considered it as such. In 1946, and to the present, Vargas, 



Martinez, and Diaz consider rubicundidum to be a distinct species, as does the 



present author. It is this species, and not virgatum, that is present in Guatemala. 



Stone (1948) also considered Simtdium (D.) acatenangoensis Dalmat and 



Simtdium (D.) mathesoni Vargas as synonyms of virgatum Coq., but the present 



author considers the three species to be distinct. 



DISTRIBUTION OF THE GUATEMALAN SIMULIIDAE 



Since the publication of complete distribution records for all Guate- 

 malan species of black flies would require a prohibitive amount of 

 space, records have been shortened, omitting references to the dates 

 on which collections were made as well as the names of the collectors. 

 When the particular species was collected in more than 25 streams in 



