asymmetrical, with small, sucker-shaped processes; a row of long, straight 

 dark hairlike spines interrupted by the beak- shaped process in the anterior 

 354 part of the labrum. Setae of labrum yellowish; seta 1 small; setae 3 and 4 

 thin and curved; seta 2 long, situated on the membranous part; setae 5 and 6 

 straight, thicker, of about the same length. 



Mandibles (Figure 463) flattened; upper blade of left mandible well 

 marked, with 2 basal teeth of different size; the whole other part of the 

 blade finely serrated, as on the mandible of the pupae; lower blade 

 developed only in its distal part and with 2 small teeth; tooth in the middle 

 of the blade little marked; brush situated not in a depression; right mandible 

 with one blade with finely denticulate apical part and large basal tooth; basal 

 setae of mandibles thin and yellowish, of about the same length, situated close 

 together; the seta situated more ventrally is curved, extending along the 

 mandible. 



Maxillolabium (Figure 464) short; submentum trapezoidal, with broad, 

 slightly concave anterior margin; setae near the anterior angles moderately 

 long, longer than the other setae; the two ovoid sclerites at the sides of the 

 submentum are the lateral parts of the pregula; the median part of the pre- 

 gula absent. Seta of cardo thin, short and curved; the stipes consist of 

 a small lateral part and of a larger ventral part; both setae of the stipes are 

 straight and thin, as long as the seta of the maxillary palpifer; sclerites of 

 the first 3 segments of maxillary palps crescent- shaped; 4th segment 

 large; its sclerite with a deep ventral notch and a shallower dorsal notch. 

 The dark sclerite of the mentum projects beneath the membranous fold of 

 the basal part only laterally; ventral sclerites of labial lobes elliptical; 

 sclerites of labial palpiger crescent -shaped; labial palp oblong; one of its 

 two sensillae markedly longer and thicker than the other. 



Anterior angles of pronotum (Figure 465) rounded, angles of meso- and 

 metanotum slightly pointed; the main color of the 3 sclerites is brownish 

 yellow; pronotum with a narrow brown stripe near the lateral and posterior 

 margins; a similar stripe near the posterior margin of meso- and meta- 

 notum; anterior angles of these sclerites dark brown; metanotum with a 

 very narrow black margin. The number of secondary setae on the thoracic 

 sclerites is given below, in the last column of the table on p. 397. Especially 

 long setae of the pronotum (Figure 4 65) are the anterior -angle seta which 

 is slightly displaced from the angle and the median anterior-margin seta; 

 the other anterior -margin setae and the secondary anterior-angle seta are 

 much shorter; the second of the 2 lateral setae is very small; the 4 surface 

 setae of the median group are arranged in two pairs situated behind each 

 other; the setae of the lateral group are curved anteriorly. The primary 

 anterior -angle and the primary anterior-margin seta of the meso- and meta- 

 thorax are larger than the others (Figure 465); the 4 secondary anterior- 

 angle setae are distributed as follows: 2 near the anterior margin and 2 near 

 the lateral margin; the 3 surface setae of the mesonotum are situated in the 

 middle of the sclerite; those of the metanotum are situated closer to the 

 posterior margin: median seta thin and curved, recumbent and directed 

 anteriorly; intermediate and lateral seta situated at a distance, near each 

 other, and of different length. 



The horn of the trochantin is long and broad, completely sclerotized; 

 the distal seta forms a strong, thick spine; both setules thin and spinelike; 

 epimeral setae longer (Figure 466). Episternum of meso- and metathorax 



394 



