REPORT ON THE ORNITHOLOGY OF THE DEATH VALLEY EXPEDITION OF 1891, COMPRISING NOTES ON THE BIRDS OBSERVED IN SOUTHERN CALIFORNIA, SOUTHERN NEVADA, AND PARTS OF ARIZONA AND UTAH

1893 ◽  
Vol 7 ◽  
pp. 1-158 ◽  
Author(s):  
A. K. Fisher
Keyword(s):  
Southern California ◽  
Death Valley ◽  
Southern Nevada

scholarly journals Young Larvae of Veromessor Pergandei (Hymenoptera: Formicidae: Myrmicinae)

1987 ◽  
Vol 94 (3-4) ◽  
pp. 303-307 ◽  
Author(s):  
George C. Wheeler ◽  
Jeanette Wheeler
Keyword(s):  
Fourth Instar ◽  
Death Valley ◽  
Small Larva ◽  
Mature Larva ◽  
First Instar ◽  
Southern Nevada ◽  
Veromessor Pergandei ◽  
Body Shapes

Time was when it seemed every myrmecologist wanted to work on Veromessor pergandei, but we can find no mention of it in the last eight years of Zoological Record. When we lived with it in Death Valley and southern Nevada it became one of our favorite ants.To differentiate instars we would like the following specimens: a first instar inside an egg; a second instar inside a first instar that is ready to moult; a third instar inside a second ready to moult; etc; a mature larva; a prepupa. Fortunately our V. pergandei material meets all the requirements, except the first. V. pergandei is polymorphic, which presents another problem: when does subcaste differentiation begin? How can one tell whether a small larva is the young of a major or a mature of a minim; or whether a mediumsized larva is the mature of an intermediate worker or the halfgrown larva of a major? In V. pergandei subcaste differences apparently begin in the fourth instar and are manifested only in size.V. pergandei presents another problem: there are two body shapes for mature worker larvae. We have no explanation for this.

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