page_title: Glossary of entomology terms
section_title: G–L
hierarchical_section_title: Glossary of entomology terms / G–L
caption_attribution_description: English: Oberea linearis detail of head, partly colouredgreen:mandibel red:labrum blue:clypeus
context_page_description: This glossary of entomology describes terms used in the formal study of insect species by entomologists.
context_section_description: gena
  (Anatomical feature) the area below the compound eyes, the insect equivalent to human cheeks.
  geniculate
  Elbowed. From the Latin for a bended knee, referring to an organ of a type not always expected to be kinked, but having a definite angular bend or hinge. In entomology the term typically refers to an elbowed antenna. For instance, many species of Hemiptera, Coleoptera, and Hymenoptera have markedly geniculate antennae
  girdle
  a strand of silk used to prop up the pupa. Found especially in the Papilionidae.
  glabrous
   
  smooth, without hairs or scales.
  gula
   
  ventral head sclerite which supports the submentum
  helminthophagy
  feeding on worms classified with helminths (including parasitoids of helminths).
  hemocoel
  the interior of the insects anatomy, including all organs and hemocyte.
  hemocyte or haemolymph 
  a fluid in the circulatory system of insects containing nutrients, fat, water, etc.
  hemophagy
  feeding on blood.
  herbiphagy
   
  feeding on herbaceous plants.
  hindwing
   
  (Anatomical feature) the pair of wings of a four-winged insect farthest from the head.
  hyaline
  transparent, like glass.
  hygropetric
   
  mode of life: living in the thin film of water on wet rocks.
  hypognathous
  having mouthparts that are ventrad of a vertically oriented head, "pointing downwards", or having an "under bit", instead of pointing backwards or forwards.
  hypopharynx
   
  Mouthpart. A tonguelike lobe on the floor of the mouth.
  idiobiont
  a form of parasitism where the parasitoid paralyzes or leaves the host unable to continue development at oviposition.
  imago
  (plural is usually imagines) The final, or adult, stage in metamorphosis.
  interspace
  The region between adjacent veins.
  irrorated or irroration 
  Old term used usually to indicate a sprinkling of scales interspersed among scales typically of a different color.
  keratophagy (Also spelt ceratophagy) 
  feeding on cornified tissues and hair of animals.
  koinobiont
  A form of parasitoidy where the parasitoid lives inside the host while allowing it to live after oviposition.
  labium
   
  Mouthpart forming the lower lip. Bears the labial palps.
  labrum
  (Anatomical feature) the anterior structure below the clypeus covering some of the mouthparts, sometimes called the "upper lip".
  lichenophagy
  feeding on lichens.
  lines (moth)
   
  transverse line markings on the wings of moths, mainly Noctuidae-  basal line; inner line;  outer line; submarginal line.See figures 4, 5
   
  
  lines of weakness
  (Anatomical feature) the suture lines where the integument will split to allow for molting or autotomy.
  lunule
  A body area or marking roughly in the shape of a crescent.
caption: Head of a beetle in the family Cerambycidae; showing the labrum in red, below the clypeus in blue
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