Anteclypeus relatively long, longer than labrum, mainly light; base of 

 the slightly dark longitudinal stripe reddish yellow. Labrum broad; 

 membranous anterior margin straight, with short hairs in the middle, with 

 sparser and longer hairs laterally; dorsal sclerite brownish yellow, lighter 

 at the margin, with a shallow median indentation; posterior-angle sclerites 

 curved, thin, darker than the sclerite. Setae thin, light yellow, similar; 

 seta 1 shorter and thinner than the others and situated anteriorly at the 

 margin; farther away are setae 2 and 3, which are situated lateral to the 

 median indentation; seta 4 situated slightly away from the margin; posterior 

 to them are setae 6 and 5, which are the longest setae of the sclerite; 

 median pit large, situated in the posterior half of the labrum. Mandibles 



407 (Figure 5 77) long, median depression present only distally; outer side 

 of both mandibles with a deep, rather broad groovelike depression with a 

 comb in the middle. Apical tooth of left mandible blunt, broad; upper 

 blade with a tooth near it; lower blade with 3 teeth, two of them small; 

 apical brush in the median depression consisting of short chetoids, basal 

 brush consisting of long chetoids; molar tooth replaced by a small tubercle. 

 Right mandible narrower than left, almost twice as long as wide at base; 

 median depression short in apical third of mandible; lower blade with 

 larger tooth near apical tooth; end of mandible appears, therefore, divided; 

 it also bears 2 small serrations; second large tooth situated at a distance, 

 projecting and with finely serrated outer' margin; upper blade of mandible 

 with one tooth; and small tubercles near the base. Outer setae of mandibles 

 situated close together, long and light, situated about middle of mandible; 

 anterior seta near ventral margin of apical end of outer groove, slightly 

 longer than posterior seta. 



408 Maxillolabium very wide, as usual in Psychomyiidae; almost twice as long 

 as the gular suture when it is extended. Submentum (Figure 5 78) black or 

 blackish brown, with tuberculate surface; median suture light, distinct; 

 anterior margin straight; posterior angle of sclerite almost reaching 

 slightly concave anterior margin of gula; primary seta situated near 

 anterior angle of sclerite strong and light. Cardo brownish, the seta at its 

 base thin. Stipes oblong-triangular; outer seta situated on a membrane 



in anterior part of sclerite, thin and yellowish, longer and thicker than seta 

 of submentum; distal seta small and light. Palpifer reddish brown; seta 

 near the anterior margin light and strong, almost as long as seta of stipes. 

 Maxillary palps short, 3rd segment slightly longer than the others; the 

 broad apically rounded lobe with numerous setae. Mentum brownish; 

 labial lobe long; bulb -shaped at the base, with a thin ligula; ventral setae 

 soft and light. 



Pronotum with light anterior margin; anterior angles rounded; posterior 

 angles curved ventrally (Figure 575). Sclerite light yellow; each half of 

 the sclerite with a longitudinal, curved smoke brown figure lateral to the 

 median suture, which is broad posteriorly, with indistinct dark and light dots; 

 a large, light dot in the middle of the figure. Posterior margin with a thin 

 reddish brown stripe and a brown border with indistinct light dots. Lateral 

 margin with indistinct, brownish border in the anterior half; an oblong 

 reddish brown spot near the pleural articulation; anteriorly and medially 

 to the posterior angles, a bracket -shaped ridge with a dark stripe surrounding 

 the area adjacent to the brown spot at the lateral margin. Anterior -angle 



458 



