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Zoomorphologie

, Volume 87, Issue 3, pp 217–236 | Cite as

Comparative and functional morphology of the mandibles of some fourth stage mosquito larvae (Diptera: Culicidae)

  • Ralph E. Harbach
Article

Summary

The mandibles of fourth stage mosquito larvae representing each subfamily and major feeding type were studied with the light and scanning electron microscopes. The fine structure of a number of minor structures and 7 major, composite structures was investigated. The latter include the mandibular teeth, the seta-bearing mandibular lobe, and several setal structures, the sellar setae, mandibular comb, mandibular brush, mandibular rake, and mandibular sweeper. Major structural differences were found in the subfamily representatives but due to the variety of methods used by culicines to obtain food, the differences are discussed in relation to feeding habits. In general, a reduction in the number of setae and an increase in the sclerotization and size of the mandibular teeth was found to occur in a sequence from plankton feeder to predator. InCulex pipiens quinquefasciatus, a plankton feeder, andAedes taeniorhynchus, a bottom feeder, the setae are well developed and bear processes for collecting small food particles. The mandibular teeth are more numerous and the mandibular comb is more prominent in the latter. InAnopheles crucians, a surface feeder, some setae are modified for capturing large food particles; others for directing smaller particles to the mouth. The numerous teeth are fit for crushing large particles.In Armigeres subalbatus, a scavenger, the setae and their processes are reduced in number and

Keywords

Fine Structure Structural Difference Composite Structure Setal Structure Food Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations Used in Figures

AcT

accessory teeth

ADT

anterior dorsal tooth

ArT

arcuate thickening

ASeS

accessory sellar setae

AVT

auxiliary ventral tooth

BB

basal band

DMS

dorsal mandibular seta

DMSp

dorsal mandibular spine

DT

dorsal teeth

L

labula

MAbA

mandibular abductor apodeme

MAdA

mandibular adductor apodeme

MLS

mandibular lobe setae

MLS1

mandibular lobe setae 1

MLS2

mandibular lobe setae 2

MLS3

mandibular lobe setae 3

MLS4

mandibular lobe setae 4

MLS5

mandibular lobe setae 5

MnB

mandibular brush

MnBS

mandibular brush seta

MnC

mandibular comb

MnCE

mandibular comb element

MnL

mandibular lobe

MnPA

mandibular pilose area

MnR

mandibular rake

MnS

mandibular sweeper

MnS1

mandibular sweeper 1

MnS2

mandibular sweeper 2

MnSS

mandibular sweeper seta

MnT

mandibular teeth

O-MP

seta O-MP

MPgO

mandibular peg organ

MPO

mandibular pit organ

MRB

mandibular rake blade

MRB1

mandibular rake blade 1

MRB2

mandibular rake blade 2

MRB3

mandibular rake blade 3

MRS

mandibular rake seta

MSA

mandibular spinose area

MSAB

mandibular spinose area brush

PDT

posterior dorsal tooth

Poa

postartis

Pra

preartis

Se

sella

SeS

sellar setae

SeS1

sellar seta 1

SeS2

sellar seta 2

SeS3

sellar seta 3

SeS4

sellar seta 4

ST

subdental tubercle

UR

U-shaped rod

VR

V-shaped ridge

VT

ventral teeth

VT00

ventral tooth 0

VT1

ventral tooth 1

VT2

ventral tooth 2

VT3

ventral tooth 3

VT−1

ventral tooth-1

VT−2

ventral tooth-2

VT−4

ventral tooth-4

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Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • Ralph E. Harbach
    • 1
  1. 1.Department of EntomologyNorth Carolina State UniversityRaleighUSA

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