2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



mounting. Wing expanse is frequently estimated by doubling the 

 measured width of one wing taken from base of median vein to apex 

 and adding the width of the body between. 



Slides were examined with a Wild M20 compound microscope 

 having X 10 oculars and X 3, X 10, and X 20 objectives and a 

 camera lucida attachment, invaluable for accurate drawings. 



I wish to acknowledge the patient, professional advice my husband 

 Dr. Richard M. Fox has given me throughout this study as well as his 

 assistance in making some of the slides and drawings. My appreciation 

 also goes to Richard T. Satterwhite, our staff artist, who perfected 

 the drawings for publication, and to Joseph Y. Quil, who typed the 

 final manuscript. 



Myrmecolicidae Saunders 1872 



Since Bohart's (1951) excellent revision of the Myrmecolicidae, 

 which added 10 new species to the 7 previously known, the family has 

 continued to grow and now comprises 42 species. Of these, Luna de 

 Carvalho (1956, 1959) described 16 from Angola, Oliveira and Kogan 

 (1959) added 4 from Brazil, Kogan and Oliveira (1964) added 3 from 

 New Guinea, Pasteels (1956) added 1 from the Belgian Congo, and 

 Paulian (1959) added 1 from Madagascar. Luna de Carvalho 

 synonomized Bohart's genus Rhipidcolax with Caenocholax Pierce, 

 which he separated into the fenyesi group and the retrorsus group. 

 Other recent authors have adopted this classification, recognizing 

 that the detached veins regarded as diagnostic by Bohart actually 

 vary in size, shape, and even visibility with the result that it is difficult 

 to consider them consistent characters. 



Myrmecolax blickenstaffi, new species 



Figures 1-6 



Male: Body dark brown, 1.7 mm long; median breadth of hind wing 

 1.6 mm; wingspread 3.3 mm. 



Head: Antenna with segment iv very small and flabellum of in 

 extending about one-third length of segment vn; ratio of vi to vn 

 about 3:5; total length 1.1 mm. Four ocelli seen on inner rim of eye 

 from dorsal view. Mouthparts with slender, lancelike mandibles 

 slightly more than one-half as long as distal segment of maxillary 

 palpus. Palpus and antennal segments in to vn covered with minute 

 hairs and sensoria. 



Metathorax: With clearly defined sutures around keystone-shaped 

 prescutum and concave scutellum. Scuti not well defined on inner 

 margins. Postlumbium ovoid with strong anterior rounding. Post- 

 scutellum slightly longer than anterior sclerites of metathorax. 



