Body segments of the first instar larva of G. ruficollis A pronotum, dorsal view (A’ its epipleura, lateral view) B mesonotum, dorsal view (B’ its epipleura, lateral view) C metanotum, dorsal view D sternites and pleurites of prothorax E sternites and pleurites of mesothorax F tergite of abdominal segment I G tergite of abdominal segment IV H sternites and pleurites of abdominal segment I I sternites and pleurites of abdominal segment III J sternites and pleurites of abdominal segment IV K abdominal segments VIII–X, lateral view L abdominal segments IX–X, dorsal view (left half of tergite IX not shown) M, N abdominal segment X (M lateral view N dorsal view N’ ventral view); p.o. – pleural organ or pleuropod; sp. – spiracle. Scale bars: 1.0 mm (A–K); 0.5 mm (L); 0.1 mm (M, N).