CONTENTS, continued 
A key to the species of Spintharina with descriptions of new species and 
indication of species groups (Hymenoptera: Chrysididae). Richard M. 
Bo hart 93 
Prey selection in an orb-weaving spider: Micranthena gracilis (Araneae: 
Araneidae). George W. Uetz and Scott P. Hartsock 103 
Synonymy of Leonomyrma Arnoldi 1968 with Chaleopoxenus Menozzi 1922 
(Hymenoptera: Formicidae). Alfred Buschinger 117 
Natural history of a subsocial tortoise beetle, Acromis sparsa Boheman 
(Chrysomelidae: Cassidinae) in Panama. Donald M. Windsor 127 
Symbiosis between social spiders and yeast: the role in prey attraction. 
William James Tietjen, L. Rao Ayyagari, and George W. Uetz 151 
An analysis of geographic variation in the Pogonomyrme x occidentalis 
complex. (Hymenoptera: Formicidae). Steven O. Shattuck 159 
A new genus of Ageniellini from Central America (Hymenoptera: Pompilidae: 
Pepsinae). Marius S. Wasbauer 181 
Three new megalyrids from South America (Hymenoptera: Megalyridae). 
Scott Richard Shaw 189 
Foraging and recruitment in ponerine ants: solitary hunting in the queenless 
Ophthalmopone berthoudi (Hymenoptera: Formicidae). Christian 
Peelers and Robin Crewe 201 
