Pronotum mainly brownish yellow, brownish at posterior margin, lighter 

 than head and mesonotumj groove in anterior third brownish in middle; 



punctation distinct. Mesonotum brown 

 anteriorly and in middle of posterior 

 part; posterior angles broadly light, 

 with short, dark lines; lateral margin 

 mainly Ught; postei-ior angles with 

 broad black margin. 



Legs yellowish brown; tibiae and 

 tarsi with a dark band distally; 

 femora and tibiae with dark dots; 

 fore tarsi without ventral row of 

 spinules, mid- and hind tarsi with 

 very small spinules. 



Dorsal process of abdominal 

 segment 1 blunt; lateral processes 

 flat apically. Lateral line on seg- 

 ments 3—8, with fine, dark hairs. 



Tergite of abdominal segment 9 

 brownish. Claw of anal legs with a 

 dorsal denticle. 



Case 18—19 mm long, made of sand 

 grains, cylindrical, slightly curved, 

 rounded posteriorly, sometimes with 

 small stones at anterior end (Figure 523). 



Pupa. Length 18 mm. Antennae reaching abdominal segment 7. Labrum 

 and mandibles as in M. ny c t e r ob i a. Wing sheaths reaching to abdominal 

 segment 4. Mid-tarsi with numerous natatorial setae, hind tarsi with a few 

 sparse setae. 



Process of abdominal segment 1 moderately rounded; posterior margin 

 with a median indentation, lobes with numerous spinules. 



Holding apparatus on segments 3—7; number of hooks: 111:5—7; 1V:9; 

 V:10 + 16; VI:10-13; VI1:13. Anal rods straight, slightly thicker apically, 

 with small spinules. 



FIGURES 522 and 523. Micropterna sequax 

 McL. (after Hickin): 



522 - head, dorsal (A) and ventral (B); 523 

 in case. 



larva 



Number and arrangement of gills of the pupa of \l. lateralis 



Segment 



Dorsal 



Pleural 



Ventral 



2 





1 



1 





3 





1 



1 





4 





1 



1 





5 





1 



1 (0) 





6 











7 



1 (0) 









372 



