XU GLOSSARY OF TERMS. 



Emarginate. — Notched ; with an obtuse, rounded or quadrate section 



cut from a margin. t 



Epicranium. — A dorsal plate of the head forming laterally the sockets 



for the antennae. 

 Episternum. — A ventral thoracic plate lying below the parasternum. 

 Epistome. — A plate of the head covering the base of the tongue. 



Falcate. — Curved like a sickle. 



False clypeus. — Area between clypeus and lobes of head ; a very thin 



band on each side of true clypeus, not seen in the early instars. 

 Fasciculate. — Bundled ; clustered as in a bundle ; tufted. 

 Femur. — The third segment of the leg. 

 Filiform. — Slender, and of equal diameter ; hair-like. 

 Frass. — The excreted pellets of the larva. 

 Frenulum. — A set of fused or closely contiguous bristles arising from 



near base of costa of hind wing, and used as a link with the fore 



wing in flight (see retinaculum). 

 Fri&tion scales. — Modified scales found upon the male clasper, and 



supposed to assist in stridulating. 

 Frons. — The front or anterior portion of head lying between the bases 



of the antennas and the clypeus. 

 Fusiform. — Spindle-shaped ; tapering gradually to each end. 



Oenal process. — A more or less triangular projection between the pilifer 



and eye. 

 Glabrous. — Smooth, not hairy. 



Harpe. — The ventral armature of the clasper. 



Horn. — A fleshy process on the dorsum of the eighth abdominal segment 

 of the larva. 



Incrassate. — Thickened ; rather markedly swollen at some one point, 



especially near the tip. 

 Instar. — The period or stage between moults in the larva. The first 



instar is the stage between the egg and the first moult ; the final 



instar the stage preceding the change to a pupa. 

 l T f or ate. — Marked with minute points ; freckled. 



Labium. — The lower lip ; a compound structure which forms the floor 

 of the mouth. 



Labrum. — The upper lip ; covers the base of the mandible and forms the 



roof of the mouth. 

 Ligula. — The part of the labium in front of the mentum. 



Mentum. — A transverse arched stripe of chitin between the labial 



palpi ; the second segment of the labium. 

 Merum. — The lateral area of the sternites of the thorax. 

 Mesial. — At the middle. 



Mesonotum. — The upper surface of the second or middle segment of the 

 thorax. 



