140 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Ill 



lateral aspects; i stout seta near each lateral margin and anteriorly 

 near midline with 2 short rows each with 4 or 5 minute setae ; a short 

 sclerotized rod appears on the median line about one-fourth distance 

 from anterior margin. Eusternum small, usually definitely sclerotized. 

 Sternellum and poststernellum indefinite, small, membranous. 



Mesothorax and metathorax each about twice as wide as long. 

 Mediotergites sparsely punctulate ; transverse branch of impression 

 reaching from one-fourth to one-third distance from longitudinal 

 branch to middorsal suture ; longitudinal branch of impression short. 

 Anterior part of each mediotergite without setae except for a few 

 minute hairs issuing from some of punctures. Posterior part of each 

 mediotergite with transverse row of 3 to 6 setae ; usually only 3 large, 

 2 of which are paired. One or 2 large unpaired setae and some- 

 times I small seta along margin of each mediotergite, laterad to im- 

 pression. Anterior laterotergite subtriangular, almost as large as 

 subovate posterior laterotergite. Episternum bearing up to 7 spinelike 

 setae, usually from 3 to 5. A'lesothoracic spiracle slightly larger than 

 spiracles in abdomen. 



Legs subequal in length. Coxa with up to 43 (usually about 30 

 to 35) spinelike setae on anterior aspect, usually a few less on pro- 

 thoracic legs than on other legs; 4 to 8 stout setae and a few fine 

 hairs on posterior surface. Trochanter w^ith 8 to 12 (i specimen 

 with 16) spinelike setae on medioanterior surface; up to 12, rarely 

 more, such setae and i fine seta on posterior surface ; 2 to 4 well- 

 developed setae on medial aspect. Femur usually with 7 to 12 (i 

 specimen with 14) spinelike setae on medioanterior aspect; 4 to 6 

 spinelike setae and i slender hair on posterior surface ; i long seta 

 on medial aspect ; i or 2 fine setae laterally. Tibiotarsus with 6 setae 

 around distal margin ; 2 to 5 spinelike setae and i slender seta on 

 medioanterior surface ; 2 to 4 spinelike setae on posterior aspect. 

 Ungula {un, fig. 26, d), when uneroded, about three-fourths as long 

 as tibiotarsus; base expanded medially with distal end pointed (when 

 uneroded) giving ungula appearance of bottle opener. 



First to eighth abdominal segments subequal ; first segment short- 

 est; fourth to sixth segments widest. Mediotergites (fig. 26, c) 

 with scattered, small, shallow pits ; transverse branch of impression 

 (trim) variable, but usually reaching to or almost to middorsal suture 

 on segments 2 to 5, shorter in other segments, especially in first seg- 

 ment where it attains only about one-half distance to middorsal su- 

 ture; longitudinal branch of impression (him) extending approxi- 

 mately three-fourths distance from transverse branch to posterior 



