Sericostoma herakles Malicky, 1999

Waringer, Johann & Malicky, Hans, 2017, The larvae of Sericostomabergeri Malicky, 1973 and Sericostomaherakles Malicky, 1999 (Trichoptera, Sericostomatidae), ZooKeys 695, pp. 123-133 : 125

Sericostoma herakles Malicky, 1999

Description of the 5th instar larva.

Diagnosis. Pronotum with convex ventral border; anterolateral pronotal corner conically prolonged and pointed; with black comma-like marking on lateral protuberance; setal counts on abdominal dorsum IX 18-41.

Biometry. Body length of 5th instar larva 13.7 mm, head width 1.93 mm (n = 1). All morphological characters identical to those of S. bergeri except as noted below.

Head. Head capsule dorsally medium brown, whitish coloration on ventral section of parietalia restricted to small oval patches (Fig. 18).

Thorax. Pronotum with convex ventral border (Fig. 19); anterolateral pronotal corner conically prolonged and pointed (Fig. 19, white circle). Each pronotal half covered by 190-220 setae concentrated on anterior pronotal section. Sclerotized plates on mesodorsum creamish white to light brown, with oval, pale muscle attachment spots. Setal counts per central sclerite are 69-85 in anterior group and 25-30 in posterior group; lateral sclerite with 57-80 dark setae. Setal counts per metanotal sclerite are 27-35 setae in anterior group, 50-65 setae in posterior group.

Abdomen. Lateral sclerite of anal proleg with 35-42 black setae of varying length.

Larval case. Case length 15.2 mm, anterior width 3.5 mm, posterior width 2.3 mm (n= 1).