Glossary

A

abdomen: with five visible sternites

antenna: 3 to 11 segments, inserted in antennal pit in front of eyes

C

clypeus: usually quadrangular, elongate; joined to the labrum

coxa: located in coxal cavity, spherical

E

elytron: strongly sclerotized mesothoracic wings, remaining open during flight. When closed, they cover to the last abdominal segment.  Most genera are sculptured with large punctures usually in regular rows; with various combinations of costae, carinae, spines, or tubercles; however some genera are smooth.  Lateral and apical margins are dentate, serrate or smooth.  Humerus is usually rounded but may be produced and bear spines or expansions.

eye: elongate, slightly prominent, multifaceted; usually slightly kidney-shaped

F

femur: largest part of the leg; more or less cylindrical, attached at base to trochanter and at apex to tibia

frons: upper anterior portion of head capsule above the clypeus

L

labrum: triangular, joined to the clypeus and the oral orifice

M

mesosternum: narrow between middle coxae, separated from metasternum by a transverse suture; forming the anterior part of the middle coxal cavities

O

oral orifice: subelliptical cavity which occupies middle part of the underside of the head

P

pronotum: occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta

prosternum: contains two anterior coxal cavities

S

scutellum: sclerotized portion of the mesonotum, visible between elytral bases; usually more or less triangular, pentagonal, or quadrate

T

tarsus: each with five tarsomeres, penultimate degenerated.  Last tarsomere with claws.  Basal tarsomere small, triangular; second bilobed, larger than first; third larger than second, with two pronounced lobes; last tarsomere more or less conical, with one or two curved claws at distal end; segments 1 to 3 flattened,  with dense pubescence on  lower surface.

tibia: variable in length; joins femur and tarsus

trochanter: small, joined to base of femur

V

vertex: occupies the area behind and between the eyes