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FIGURES 424-247. Hydroptila maclachlani Klap.: 



424 — left side of head, dorsal; 425 — left side of pronotum; 426 — metanotum; 

 427 — larva in its case (424—426 — after Jacquemart; 427 - after Klapalek). 



Nota of thoracic segments brownish yellow; pronotum (Figures 425 and 

 426) and mesonotum with a broad dark transverse stripe in each half; large 

 dark dots anteriorly; dark stripe on metanotum narrower, situated only at 

 the sides; there are fewer dots. 



Legs yellowish brown, with a characteristic distal process of the tibia 

 and long narrow claws; chaetotaxy of legs as in H. femoralis; seta of 

 claw forming a strong spine. 



Dorsal sclerite of abdominal segment 9 small, situated near the anterior 

 margin; medioanal seta situated near the posterior margin, longer than the 

 others; anterior-angle seta also long but shorter. Claw strongly curved, 

 with three small dorsal denticles. 



Three tracheal gills, a median gill near the posterior margin of 

 abdominal segment 9 and one gill on the anal legs near the base of the claw. 



Case grayish green, bean-shaped, with a covering of fine sand grains 

 (Figure 427); slits at the end of the case broad; case as in other species 

 of Hydroptila, much larger than the larva which moves freely inside it, 

 turns forward and sticks its head either through the anterior or the 

 posterior end of the case. 



Pupa. Length of male pupa 2.7 mm, of female pupa about 4 mm. Antennae 

 short, filiform. Labrum rounded anteriorly; anterior margin with 2 small 



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