anatomy image


a b c d e f g h i l m p s t v


  • aedeagus: the main sclerotized part of the male genitalia; “aedeagus” is used here instead of “median lobe of aedeagus”
  • antenna: (pl. antennae) a pair of a relatively long segmented appendages on the front or upper side of beetle head
  • antennal calli: the swellings at the front of the head capsule above antennal sockets
  • antennomere: “segment” of antenna, more or less clearly separated
  • anterior: the nearest to the front of beetle
  • apex: (pl. apices) the far distal end of a structure; opposite of base
  • apical: of or pertaining to the apex; opposite of basal


  • bands: (here) transverse maculae on the beetle elytra
  • basal: of or pertaining to the base, as in the first, or basal segment of an appendage; opposite of apical


  • clypeus: the part of the frontal surface of the head capsule between frons and labrum
  • coxa: (pl. coxae) the first part of the beetle leg, joining leg with beetle body


  • disc: the middle, more uniform area of a structure (usually elytra or pronotum) which is visible dorsally


  • elytral suture: the line where elytra meet together along their length
  • elytron: (pl. elytra) the fore highly sclerotized wing of beetle
  • epipleuron: (pl. epipleura) a lateral part of elytron which folds underneath and is separated from the elytral disc by the carina


  • femur: (pl. femora) the third segment of the leg articulated with trochanter (or coxa) and tibia
  • filiform: slender antennae with antennomeres of similar shape
  • frons: the outer part of the head capsule of beetle occupied the space between clypeus and antennal calli


  • gena: (pl. genae) the part of the beetle head below and behind the eye


  • humeral callus: (pl. calli) more or less marked tubercle or knob on the anterobasal angle of elytron
  • humeral plica: (pl. plicae) the fold or ridge on the elytron beginning at the humeral callus and disappearing posteriorly


  • incrassate segment: (here) segment of the articulate beetle body part (for example antenna or maxillari palpi) gradually increasing in width towards the middle and subsequently decreasing in width
  • infuscate: darken with a brownish tinge
  • internal sac of aedeagus: the inner chamber of the beetle penis invaginated at the end of the aedeagus, bearing from 2 to 6 sclerotized hooks, spines or plates in Diabrotica beetles


  • labrum: the “upper lip” of beetles, a movable sclerite joined under clypeus
  • lateral: located near the sides of the body


  • maculate: (here) marked by maculae or patches of a different shape and size, usually clearly separated from each other
  • mandible: the “upper jaws” of beetles
  • maxilla: (pl. maxillae) so called “lower jaws” of beetles lying just behind (under) the mandibles
  • maxillari palpi: pair of segmented appendages of the maxillae
  • mesepimeron: posterior part of the mesothoracic pleuron
  • mesepisternum: anterior part of the mesothoracic pleuron before the pleural suture
  • mesocoxa: the first segment of middle legs
  • mesofemora: femora of the middle legs
  • mesosternum: ventral plate of the mesothorax
  • mesothorax: the middle segment of the beetle thorax
  • mesotibiae: tibiae of the middle legs
  • metafemora: femora of the hind legs
  • metasternum: ventral plate of the metathorax
  • metathorax: the posterior segment of the beetle thorax
  • metatibia spur: a short process at the apex of metatibia
  • metatibiae: tibiae of the hind legs
  • metepimeron: posterior part of the metathoracic pleuron, in Diabrotica longitudinally extended between the lateral edge of the metacoxa and the elytron, usually more or less covered by elytron epipleura
  • metepisternum: anterior part of the metathoracic pleuron before the pleural suture, usually more or less longitudinally extended
  • moniliform: (here) antennae with bead-like, slightly elongate and swollen antennomeres


  • pleuron: (usually) the lateral plate of thoracic segments in beetles
  • plica: (pl. plicae) (here) a fold or ridge on a beetle elytral surface
  • posterior: the region of the body parts of the beetle furthest from the head
  • procoxa: the first segment of fore legs
  • profemora: the femora of fore legs
  • pronotum: the notum of the prothorax with highly sclerotized pronotal disc
  • prosternum: ventral part of the prothorax
  • protibiae: tibiae of fore legs


  • sclerites: (here) the sclerotized hooks, spines or plates in the internal sac
  • scutellum: small, usually triangular shield between the bases of elytra
  • serrate: in reference to antennae, saw-like, often with a sharp ridge on the outer margin
  • sinuate: curved in some way
  • sulcate: bearing the carinae or ridges on the elytron
  • sutural angle: the posterior angle or apex of the elytron near the suture


  • tarsomere: one of the segments of the tarsus
  • tarsus: (pl. tarsi) the fifth, the most distal, part of the beetle leg, divided into a few segments
  • tibia: (pl. tibiae) the forth part of the beetle leg articulated with femur on the one side and with tarsus on the other side
  • tinge: (here) to add a trace or shadow of the different color to a basic color of a beetle body part
  • trochanter: second segment of the beetle leg, located between the coxa and femur, usually small, but relatively large in Diabrotica


  • vertex: the upper part of the head capsule behind the eyes
  • vittate: (here) marked by longitudinally extended maculae different from the basic color of elytron