Abstract
The spiracular chambers of the three anterior pairs of spiracles are described, and their relationships with the air stores on the body are discussed. Morphological variations in the spiracular chambers of Ambrysus, Notonecta, and Hesperocorixa appear to be correlated with the manner in which these insects obtain atmospheric and dissolved oxygen.
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Abbreviations
- AB :
-
Abdominal segment
- AC :
-
Antecosta
- AF :
-
Flap on second abdominal segment
- AM :
-
Alar membrane
- AP :
-
Abdominal projection of second abdominal segment
- AT :
-
Air trough of metathoracic spiracular chamber
- AX :
-
Humeral axillary sclerite
- CL :
-
Clavus of forewing
- CM :
-
Coxal membrane
- CO :
-
Corium of forewing
- CP :
-
Metacoxal process
- CS :
-
Claval suture of forewing
- CX :
-
Coxa
- D :
-
Wing-anchoring depression on costal margin of forewing
- DVM :
-
Dorsoventral muscle of first abdominal segment
- E :
-
Embolium of forewing
- EM :
-
Epimeron
- ES :
-
Episternum
- FE :
-
Femur
- FL :
-
Posterior flap on costal margin of forewing
- FW :
-
Forewing
- G :
-
Gap between forewing and body
- OR :
-
Groove on abdominal projection
- H :
-
Horizontal ridge or sulcus
- HA :
-
Hairs on precoxal bridge HD Head
- HL :
-
Laterosternal hairs
- HW :
-
Hindwing
- L :
-
Laterosternite of abdomen
- LH :
-
Lateral hairs of ventral abdominal air channel
- LM :
-
Epirneral lobe
- LMO :
-
Opening into epimeral lobe
- LN :
-
Notal lobe
- LS :
-
Episternal lobe
- MI-II :
-
Membrane between prothorax and mesothorax
- MB :
-
Membrane of forewing
- MH :
-
Medial hairs of ventral abdominal air channel
- MP :
-
Process for dorsoventral muscle of first abdominal segment
- N :
-
Notum
- P :
-
Pleural ridge or sulcus
- PB :
-
Postalar bridge
- PN :
-
Postnotum
- PP :
-
Postalar projection of postalar bridge
- R :
-
Ridge on metathoracic episternum
- RS :
-
Rounded swelling on costal margin of forewing
- S :
-
Spiracle
- SA :
-
Subalar air store
- SC :
-
Spiracular chamber
- SO :
-
Scolopophorous sense organ
- ST :
-
Sternum
- TA :
-
Thoracico-abdominal sclerite
- TAL :
-
Thoracico-abdominal lobe of thoracico-abdominal sclerite
- TAM :
-
Functional (not morphological) thoracico-abdominal membrane
- TAO :
-
Opening into thoracico-abdominal lobe
- TR :
-
Trochanter
- V :
-
Vertical ridge or sulcus
- VP :
-
Vertical plate of thoracico-abdominal sclerite
- WA :
-
Wing-anchoring process of mesothoracic epimeron
- WF :
-
Wing-anchoring flap on costal margin of forewing
- WH :
-
Hairs on emboliar margin of forewing
- WM :
-
Costal margin of forewing
- WR :
-
Ridge on inner surface of forewing
- XC :
-
Axillary cord of forewing
- 2 or 3 PH :
-
Second or third phragma
- II–III:
-
Boundary between mesothorax and metathorax
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Parsons, M.C. Respiratory significance of the thoracic and abdominal morphology of the three aquatic bugs Ambrysus, Notonecta and Hesperocorixa (Insecta, Heteroptera). Z. Morph. Tiere 66, 242–298 (1970). https://doi.org/10.1007/BF00280736
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DOI: https://doi.org/10.1007/BF00280736