334 GLOSSARY OF TERMS USED IN ENTOMOLOGY 



Invaginate. When a tubular or vesicular part is turned inward or 

 retracted within the body wall. 



Iridescent. Reflecting the prismatic colors. 



Iris. The circle which, in an ocellate spot surrounds the pupil. 



Irrorate. Marked with fine points. 



Iso. Equal. 



JuGA. The lateral anterior lobes of a Hcteropteron ; each side of 

 the tylus. 



Labellum. The sensitive ridge tip of the mouth structures of 

 certain Diptera; a prolongation of the base of the rostrum in Coleoptera 

 and Hemiptera. 



Labial. Pertaining to the labium. 



Labium. The lower lip. 



Labrum. The upper lip. 



Lacinia. The inner lobe of the first maxilla, articulated to the stipes, 

 bearing brushes of hairs or spines. 



Lacun.e. Irregular cavities. 



Lamella. A thin plate. 



Lamellate. Divided laterally into distinct leaf-like plates. 



Lanceolate. Spear-shaped. 



Larva. The second stage in the development of the insect, follows 

 immediately after the egg stage. 



Larvarium. The shelter-case of the larva. 



Laterad. Toward the side and away from the median line. 



Lateral. On the side. 



Littoral. Living along the seacoast or in the shore debris. 



LoRA. The chitinous bands connecting the submentum with the 

 cardo of the maxilla. 



Lumen. The cavity or hollow part of an organ or tube. 



Lunula. A small crescent-shaped mark. 



LuNULE. A lunate mark or crescent. 



Macroch^t.e. The long bristles occurring singly on the body of 

 Diptera. 



Macropterous. Long or large winged. 



Macula. A colored mark larger than a spot and of no definite shape. 



Maggot. The footless larva of Diptera. 



Mammilate. With nipple-like protuberances. 



Mandible. The lateral upper jaws of a biting insect. 



Mandibulate. Having jaws or mandibles. 



Maxilla. Jaws; one on each side of the mouth immediately 

 beneath the mandibles. 



Maxillary . Belonging to the maxilla. 



Meconium. The substance excreted by certain metabolic insects 

 soon after their emergence from the chrysalis. 



Mediad. Toward the middle. 



Medial. Referring to or at the middle. 



Median. Middle. 



Melanic. Blackish. 



