Pronotum mainly yellowish brown, darker in the middle, lighter laterally 

 (at the place of the spots); spots indistinct; anterior margin narrowly brown; 

 lateral margin broadly blackish brown; posterior margin brownish black 

 in the middle and near the angles, brown in the middle of each half; a dense 

 row of this yellowish hair near the anterior margin; surface covering setae 

 setuliform or cylindrical, blunt; latter numerous anteriorly; 4 or 5 of them 

 near the anterior angles curved and longer than the others; among them 

 a long brown anterior -angle primary seta; medioanal seta brown, 

 moderately long. 



Meso- and metanotum yellow or yellowish brown, slightly darker in the 

 middle; an oblique brownish stripe with coarse dots, which are pale 

 posteriorly from the anterior angle; a curved row of grayish brown dots 

 medial to this stripe; 2 large dark dots on its outer side. Anterior margin 

 of scle rites without border in the middle, or with a pale border which is 

 brownish laterally; border of angles dark brown. Lateral margin and 

 posterior angles with broad black or brownish black border. Black curved 

 spot in middle of posterior margin of mesonotum with concave anterior 

 margin; groups of pale, coarse dots anterior to the median spot (Figure 692). 

 Median spot of posterior margin of metanotum small, without or with 

 1 serration posteriorly; posterior margin narrow, light brown or indistinct 

 lateral to the spot. Setae of sclerites primary and secondary, brownish, 

 yellowish or light; surface setae situated near the posterior margin of the 

 oblique stripe; primary medioanal seta brownish, moderately long; a small, 

 thin, light secondary seta near it; intermediate and lateroanal setae 

 situated on the other side of the group of dots, yellowish, thin, short; a short, 

 light seta posteriorly near the lateral margin. A group of 3 setae laterally, 

 near the anterior margin; 2 small setae slightly posteriorly and closer to 

 the median line; 2 setae near the oblique row and 1 seta on the outer side. 



Outer basal bifurcation of trochantin (Figure 694) slightly longer and 

 less broad than in H. ornatula; setae short, brown; several thick spine- 

 like setules, light, transparent and situated subapically; episternum as in 

 H. o rn at ul a, without setae; epimeron with brown covering setae and with 

 a short, primary seta. Epimeron of meso- and metathorax narrow, brownish, 

 with light, round spots; episternum slightly wider than epimeron, without 

 setae; trochantin triangular; seta near the basal border relatively large, 

 493 dark; both setules situated on the outer side. One gill near the base of the 

 legs, in the pleural region. 



Prothoracic sternite (Figure 693) slightly longer than in H. ornatula; 

 anterior margin with a narrowly dark brown border; posterior margin with 

 a broadly dark brown border; rhomboidal sclerites posterior to the sclerite 

 light brown. Ventral side of metathorax with one gill. Number of gill 

 filaments listed on p. 563. 



Legs brown, partly reddish brown; setae mainly dark brown; some 

 segments differ slightly in form and chaetotaxy from those of H. ornatula. 

 Anterior margin of fore coxa (Figure 694) with 6 thick, dark brown, short 

 spinelike setae and a moderately long, reddish brown, primary basal seta; 

 anterior surface setae more numerous than in H. ornatula; both primary 

 anterior setae longer than the other setae; 6 dark spinelike setae and 

 4 small setae at posterior margin; primary posterior seta longer but 

 lighter than the others; covering setae of posterior surface feathered in the 



562 



