1960] 
MacLeod — Boriomyia 
3i 
approximately of same length as basal segments; surmounted by a 
terminal seta slightly longer than segment itself. Distal two segments 
pale grey, showing usual irregular pattern of annular sclerotizations 
characteristic of antennae of hemerobiid larvae (fig. 1). Jaws slightly 
curved inwards; pale grey toward base, becoming dark brown for 
distal one-third of length. Labial palpi three segmented. Basal seg- 
ment short, slightly wider than long; arising from largely fuscous, 
mound-like palpigeral swelling on antero-ventral surface of head 
capsule. Second segment of same shape as first segment. Both of 
basal two segments braced by a mid-segmental thin, dark, sclerotic 
ring. Distal segment of palpus elongate, inflated, reaching well be- 
yond tips of jaws when extended forwards. Surface of distal palpal 
segment covered with same irregular pattern of annular sclerotiza- 
tions found on distal two segments of antenna. Base of distal palpal 
segment braced by a thin fuscous ring. 
Thorax — Prothorax with usual three subdivisions. Anterior 
subsegment short, transverse, forming a collar which overlaps posteri- 
or margin of head capsule only slightly. Posterior subsegment of 
prothorax with spiracle opening on lateral surface. Mesothorax with 
two subdivisions, metathorax consisting of leg-bearing portion only. 
Leg-bearing portions of thoracic segments with latero-dorsal sclerites 
reduced to mere vestiges, easily visible only upon examination of 
cleared specimens with phase microscope. 
Legs largely pale except for thin fuscous sclerotizations partially 
encircling distal end of each coxa and each femur and proximal mar- 
gin of each tibia. Pretarsus of all legs with usual clavate empodium 
extending from between the pretarsal claws. 
Abdomen consisting of ten segments; first eight segments mem- 
branous, with a spiracle located laterally on each segment. Segment 
nine with a sclerite covering most of dorsal surface. Tenth abdominal 
segment largely covered with four small sclerites, one dorsally, one 
ventrally and one on each side. A pair of eversable pygopods con- 
tained within posterior portion of this segment. 
Cuticle of thoracic and first eight abdominal segments of unfed 
larva a light pinkish-purple color through which color of body con- 
tents shows through as a light greenish-yellow background. Color 
of this background changing with the intake of food to an orange 
hue and then to a dark reddish-orange extending from middle of 
prothorax to second abdominal segment. Abdominal segments nine 
and ten pale grey throughout the first larval stadium with their 
sclerites just visible under a dissecting microscope. Aorta at first only 
