and an anterior part with 2 iobes; 2 large dark dots near posterior angle; 

 2—3 smaller dots at base of anterior part. Dorsal stripes beginning in 

 middle of sclerite, pale, with distinct, reddish brown, transverse dots; stripes 

 converge at coronal suture before ridge, leaving a light area at fork. Lateral 

 409 stripes absent, sometimes replaced by pale dots. Ventral side laterally with 

 pale and reddish brown spots in form of broad stripes with groups of dark 

 dots. Gula long triangular; gular suture shorter than gula. 



Lateral anterior-inargin seta situated, as in Rhy a c o p hi 1 a , lateral to 

 frontal suture, transparent, thin, curved, procumbent: intermediate and 



median anterior-margin setae situated close 

 together in angle, brownish, former Longer than 

 latter; anterior frontal seta procumbent, light; 

 intermediate frontal seta short, brownish, 

 situated near curvature of frontal suture; 

 posterior seta situated behind curvature, lighter 

 and thinner. Seta 9 short, brownish, situated 

 before eye; seta 11 small, situated posteriorly 

 near ridge at level of eye; seta 14 moderately 

 long, brown, situated behind eye, the longest on 

 the head; seta 15* and brownish, procumbent 

 seta 16 situated further posteriorly; seta 17 

 situated medially, short; seta 7 small, smaller 

 than 9, seta 10 large, like setae 12 and 13, situated 

 one behind the other. Ventral surface without 

 dots; gula in form of a triangle; gular suture 

 longer than gula; seta 8 strong, almost equal to 

 7; seta 1 8 small. 



Labrum (Figure 669, A) oblong, narrow, almost 

 as long as wide, with rounded anterior angles; 

 dorsal sclerite large, brownish yellow; median 

 depression, posterior angles, and posterior-angle 

 sclerites dark reddish brown; setae short, light, 

 relatively thick situated near anterior margin; 

 seta 1 in form of a small, blunt spine; setae 4 

 small, blunt, crossed; setae 2 situated laterally 

 on anterior margin, blunt, short; setae 3 large, 

 situated at anterior angle; setae 5 the same, 

 situated near margin; setae 6 slightly shorter, 

 situated anteriorly, lateral to median pit. 



Mandibles (Figure 669, b) with blunt apex; 

 distal part short, without teeth; dorsal blade 

 projecting, ventral blade indistinct; lateral setae 

 light, short, widely separated. 

 Pregula (Figure 669, C) in form of small reddish brown sclerite. 

 Submentum with 5 small sclerites, 3 of them basal, light yellow, the other 2 

 anteriorly, dark brown, transverse, each with a short dark seta. Sclerites of 

 cardo reddish brown, each with 2 small, light, curved setae. Stipes large, 

 light yellow, lateral seta short, yellowish, distal seta small, light. 



FIGURE 667. Odontocerum 

 albicorne Scop. Head, thorax, 

 abdominal segments 1—3. 



In our specimens from the Western Ukraine, setae 14 and 15 are situated on the ridge, 14 on dorsal side, 

 15 on ventral side. Nielsen (1942:Figure 94) is mistaken in giving number 14 to the seta ventral to the 

 ridge and 15 to the seta dorsal to the ridge. 



513 



