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An Identification Guide to the Mosquitoes of Utah

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An Identification Guide to the Mosquitoes of Utah UNIVERSITY OF UTAH BIOLOGICAL SERIES Vol. XII June, 1961 No. 3 AN IDENTIFICATION GUIDE TO THE MOSQUITOES OF UTAH BY LEW IS T. NIELSEN and DON M. REES Department of Zoology and Entomology * Published by UNIVERSITY OF UTAH S a lt L a k e C i t y , Utah UNIVERSITY OF UTAH BIOLOGICAL SERIES Editors: W il l ia m H. B e h l e , Chairman; S e v il l e F l o w e r s , M argare S c h e l l , R ic h a r d W . V a n N o r m a n , R o b e r t K . V ic k e r y Volume 12, No. 3, pp. 63, figures 1-57 Submitted by editors — June 8, 1961 Issued June, 1961 Price, $2.00 CONTENTS MAP ......................................................................................................................................... iv INTRODUCTION ................................................................................................................. v Acknowledgments ......................................................................................................... v TAXONOMIC TREATMENT ........................................................................................... 1 Table I— List of Utah Mosquitoes, Their Systematic Position and Relative Abundance .................................................................................... 2 Keys to the genera of Utah mosquitoes.................................................................... 4 Adult females ......................................................................................................... 4 Fourth instar larvae............................................................................................. 4 Keys to the Anopheles species.................................................................................... 9 Anopheles ............................................................................................................... 9 earlei................................................................................................. 9 franciscans ........................................................................................ 11 freeborni............................................................................................ 11 Keys to mountain Aedes species................................................................................ 12 Keys to valley and plains Aedes species.................................................................... 15 Aedes atropalpus................................................................................................... 20 campestris.................................................................................................. 20 cataphylla ................................................................................................... 21 cinereus ....................................................................................................... 21 communis ................................................................................................... 22 dorsalis......................................................................................................... 23 excrucians ................................................................................................... 23 fitchii ............................................._........................................................... 24 flavescens ................................................................................................... 25 hexodontus ................................................................................................ 25 impiger......................................................................................................... 26 implicatus ...............................................- ................................................. 27 increpitus..................................................................................................... 27 intrudens ..................................................................................................... 28 melanimon.................................................................................................. 28 nigromaculis ............................................................................................... 29 niphadopsis ............................................................................................... 30 pullatus ....................................................................................................... 30 schizopinax ................................................................................................. 31 spencerii...............................................- ..................................................... 32 sticticus ...................................................................................................... 32 varipalpus ................................................................................................... 33 vexans........................................................................................................... 33 Mansonia perturbans .......................................................................................... 34 Psorophora signipennis ..................................................................................... 34 Keys to the Culex species............................................................................................. 44 Culex apicalis.... ................................................................................................... 46 erythrothorax...............- ............................................................................ 46 pipiens ...........................- ............................................................................ 46 quinque fasciatus....................................................................................... 47 restuans ...................................................- ................................................. 47 salinarius............................................. - ..................................................... 48 tarsalis ...........................- ............................................................................ 48 territans....................................................................................................... 49 Keys to the Culiseta species ....................................................................................... 54 Culiseta impatiens ........................................- ..................................................... 55 incidens .............................- .................................................................... 55 inomata ................................................................................................... 56 minnesotae .........................................- ................................................. 56 LECTEI) REFERENCES ............................................................................................. 57 iii I MONTPEJ,lEK'« I <PARIS*( B. L. HOT SPRINGS | ST CHARLES • p r e s t o n ) FISH H A V E N ^ m ! SNOWV1LLE* CLARKSTON • ) t.AKOTA.^J-.IJ > ' V - . CARDEN CITY )-*CACHe J • / iueai/bEACM»^/ ) f c J I V *LAKETOWN * . ? / f r COLL1NSTON M t KELTON• T R E M o f t o N V AU ^ L^AK RA>!DOLP" • UTAH ' PROMONTORY WELLSVILLE • • PROVIDENCE E L -y ’D '.E - R coW f iC A C H E ;/ R I C.H . \ 's 'l f B E A R RW ER / £ Y. 4? - (v v •BRIGI1AM . - I f • EVANSTON OGDEN#**: y * WASATCH CASTLE ROCK EMERY A ECHO I------- >UNTIVUJK 3& C WjSff cqalvilleX S U WwANSHIP 7)1 \ 1 ! '••\N-i4ROCKPORT SALT LAKE CITY *-u , ^ '.TIMPIE*-V: . '•CARFIELD *4.. i GRANTSV1LLE* t S A LS'T \ , V ■' 5 CARFJELp BEACH V MURRAY* >• V / V . ’ tl-V \. L A K v E v f * v - 1^ ' ‘ r,JO SEPA* ?' <? *T < -F.‘ MlDVALE«Pyr-'^N*CHARLESTON >BlNGHAM>r I J \ (WASATCH ORRS* SALT SPRINGS isf | • LEHI ^ v VERNAL#' \ |r AMERICAN FORK fit s * PLEASANT CROVE t GOLD HILL sv \ . ( r <X*fT' SPRINCVILLE \ /"-N . • SPANISH FORK _ * n s n SPRINGS TUCKER• ’ CALLAO TROUT CREF.K I * NEPH1 • PRICE • MOUNDS • EPHRAIIk \ MANT!« i- y: , ^ PETE >< c i STERLING* $ * / - ( •GUNNISOK*/ SALINA • FILLMORE 3KEEN RIVER :y« S' e v i^-v^ * S'J m RICHFIELD " ' ' •GLENVVOOD !, f UL • LOA HANKSVILLE ^^BEAVEK I a t E TORREY '^F^UTA- CAINEVILLE1 V ___> ..-*2?' ^JUNCTION • NOTOM' • PAROWAN Color1 CEDAR CITY* 'ZIO N PARK I INTRODUCTION The first detailed report on the mosquito fauna of Utah was published by pees (1943). In this bulletin Rees reported the occurrence in the state of 31 s p e c ie s , representing 4 genera, and discussed their biology, distribution, life history and importance. Subsequent publications by Rees (1944), Rees and Nielsen (1951, 1955), Nielsen and Rees (1959) and Richards et al. (1956) have added to the knowl- gdge of the mosquito fauna of this state. A total of 45 species has been reported in the literature as occurring in Utah. Of this number five are records which the authors consider invalid or of uncertain status. These are discussed by Nielsen and Rees (1959). At present the known Utah mosquito fauna consists of 40 species, represent­ ing 6 genera. A list of the Utah species with their relative abundance is presented in Table I. The primary purpose of the present work is to provide an up-to-date iden­ tification guide to the mosquitoes of Utah. The emphasis in preparing this guide has been taxonomic and every effort has been made to utilize the most u s e fu l characters known to the authors. A selected list of references contain­ ing information of value to anyone interested in the identification of Utah mosquito species is included in the bibliography.
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