1976] 
Henry — Larval Owlflies 
15 
midline widening into a broad shallow central indentation; labral 
lobes dorso-ventrally flattened. Dorsum flat, ventral surface mod- 
erately convex with no lateral excavations for mandibles. Surface 
texture mildly rugose due to slightly raised bases of setae. Ocular 
tubercles (OT) large, prominent, unflattened, and tapering distally, 
each bearing a setigerous tubercle antero-laterally; ventral stemma 
somewhat reduced in size compared with dorsal stemmata. An- 
tennal tubercles (AT) very small and inconspicuous compared with 
ocular tubercles, parallel sided to pedunculate, at least twice as 
broad as long. Antenna approximately three-fourths the length 
of ocular tubercle, bearing a variable number of flagellomeres 
(usually 12 or 13). Jaws only slightly falcate and significantly longer 
than head capsule, parallel sided to the level of proximal mandibular 
tooth and then tapering smoothly toward apices; they show a slight 
upward tilt in lateral view and are capable of being opened to an 
angle of 180 degrees. All teeth short and stout: proximal tooth small- 
est and situated barely basad of mandibular midpoint, central tooth 
largest and closely adjacent to distal tooth. Ventral mandibular 
condyle (MdCV) bounded medially by a very large curved arm 
formed from the anterior end of the subgenal ridge (SgR), but not 
contained laterally except by a low bump (see figure 6B); medial 
arm not appreciably overlapping stipes (St). Postlabium (Plb) 
broad, quadrate, articulating at its antero-lateral corners with 
widely separated prelabial lobes (Prlb) that are nearly straight and 
only slightly tapered distally; penultimate palpimere of labium 
medially constricted and longest of the three “segments” (Pip). 
Body: elliptical in outline and not prominently flattened when 
mature. Prothoracic notum small, sclerotized, nearly flat, roughly 
pentagonal in outline and broader than long, bearing a pair of 
prominent setigerous tubercles at its antero-lateral corners. Re- 
mainder of body lightly sclerotized except for a pair of large oval 
tergal plates placed laterally on mesothorax and metathorax and 
a third pair of much smaller plates on eighth abdominal tergum. 
Body laterally fringed by 12 pairs of primary and six pairs of sec- 
ondary (smaller) setigerous, dorso-ventrally flattened scoli: meso- 
and metathorax each bearing two pairs of primary scoli (ScMs and 
ScMt), with anterior pair curving gently posteriad and posterior 
pair curving anteriad; abdominal segments one through eight each 
bearing one pair of basally constricted and posteriorly directed 
primary scoli; additional pair of much smaller mushroom-shaped 
