474. PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 113 
ened. Abdomen, anal proleg with both basoventral hook and apico- 
lateral spur; claw without ventral teeth (fig. 4,qa). 
Material examined: New Hampshire, Pinkham Notch, Cutler 
River, May 18, 1957, 2 larvae. New York, near DeBruce, Willewemoc 
River, 1 prepupa. North Carolina, near Highlands, Greens Creek, 
May 19, 1959, 1 prepupa, 1 @ pupa. 
Remarks: The larvae were found in streams 2-5 yards wide; they 
are found in the riffles of the clear cold streams. 
The adults are collected from early spring into summer. Emergence 
by late May indicates that some overwinter as mature larvae or 
prepupae. 
Rhyacophila minora Banks 
FicuRE 5,a,b 
Rhyacophila minora Banks, 1924, p. 444.—Ross, 1956, p. 96 (male genitalia). 
This species has a wide range in the Appalachian Mountains: 
Maine, Massachusetts, New Hampshire, New York, North Carolina, 
Nova Scotia, and South Carolina. 
The larvae were associated with the adults through male meta- 
morphotypes collected in North and South Carolina. The larvae of 
manistee and minora are very similar. They possess in common a 
short broad head covered with short spicules, mandibles toothed in a 
similar manner, and anal prolegs with a basoventral hook and a claw 
without ventral teeth. The larvae of minora may be recognized by 
their quadrate head without darker muscle scars and by the numerous 
dark setae on the anterolateral angles of the pronotum. 
Description: Length, 12mm. Head, brownish yellow, muscle scars 
pale (fig. 5,2); head capsule almost exactly as long as broad; closely 
set with spicules each arising from a darkened base; second segment 
of maxillary palpus 1% times as long as first; left mandible with 2 
apical teeth, right with 1 mesal and 8 apical teeth, ventral one longest 
(fig. 5,5). Thorax, pronotum yellow, immaculate; anterolateral 
angles with 6-8 dark setae in addition to 3 corner setae; fore femora 
broader than other femora. Abdomen, anal proleg with basoventral 
hook and apicolateral projection that is attached to membrane; claw 
without ventral teeth (like fig. 5,d). 
Material examined: Massachusetts, Williamsburg, Apr. 30, 1954, 
1 larva. New Hampshire, Pinkham Notch, Cutler River, May 18, 
1957, 14 larvae—June 12, 1957, 2 prepupae, 3 pupae. New York, 
Tennanah Lake, Trout Brook, Apr. 4, 1959, 1 larva; Slaterville 
Springs, Wildflower Preserve, tributary of Sixmile Creek, Apr. 12, 
1959, 1 larva—Nov. 13, 1960, 1 larva (USNM). North Carolina, 
near Highlands, Greens Creek, May 18, 1959, 5 prepupae, 8 o& 2 
pupae. South Carolina, Walhalla Fish Hatchery, East Branch 
Chatooga River, May 18, 1959, 5 & 2 pupae. 
