COMPARATIVE ANATOMY OF THE INSECT TRACHEAL SYSTEM PART 1: INTRODUCTION, APTERYGOTES, PALEOPTERA, POLYNEOPTERA Author Herhold, Hollister W Author Davis, Steven R Author Degrey, Samuel P Author Grimaldi, David A text Bulletin of the American Museum of Natural History 2023 2023-03-31 459 1 1 184 http://dx.doi.org/10.5531/sd.sp.55 journal article 234314 10.5531/sd.sp.55 eb1717dc-9526-481c-a859-7ca8fd036425 0003-0090 7730159

TABLE 4 AMNH Trachea Terminology Terminology and abbreviations for nomenclature presented. For thoracic and abdominal tracheal abbreviations, ‘n’ refers to the segment number and bracketed letters denote optional prefixes (D, dorsal; M, medial; V, ventral). Example: A 2-DB-VVi refers to second abdominal segment, dorsal branch ventral visceral trachea.

Head Tracheae Term	Abbrev.	Thoracic Tracheae Term	Abbrev	Abdominal Tracheae Term	Abbrev.
Dorsal cephalic trunk	H-DCT	Prothoracic cephalic trunk	T2-CT	Abdominal typmanum	A-Ty
Cephalic dorsal intersection	H-DX	Prothorax proparanotal	T1-Pn	abdominal spiracle	An-S
Intercalary	H-Ic	leg	Tn-L	dorsal branch	An-DB
Dorsal cephalic commissure	H-DC	coxa	Tn-Cx	ventral branch	An-VB
Ocelli	H-Ocel	femoral	Tn-Fm	dorsal commissure	An-DC
Ocular	H-Oc	thoracic dorsal commissure	Tn-DC	ventral commissure	An-VC
		thoracic ventral commis-	Tn-VC	abdominal spiracular
Frontal	H-Ft	sure		branch	An-SB
		thoracic dorsal longitudinal	Tn-DLT
Frontal commissure	H-FtC	trunk		dorsal longitudinal trunk	An-DLT
Clypeal	H-Cl	thoracic ventral intersection	Tn-VX	ventral longitudinal trunk	An-VLT
		thoracic ventral longitudi-	Tn-VLT	medial longitudinal
Labrum	H-Lbr	nal trunk		Trunk	An-MLT
			Tn-Aud	visceral longitudinal
Antennal	H-Ant	thoracic auditory trachea		trunk	An-ViLT
Cephalic ventral trunk	H-VCT	thoracic auditory septum	Tn-Sept	ventral commissure	An-VC
Mandible	H-Md	thoracic dorsal branch	Tn-DB	ganglion	An-Ga
Maxilla	H-Mx	thoracic ventral branch	Tn-VB	gill	An-Gi
Maxillary palpus	H-MxPlp	thoracic spiracle	Tn-S	abdominal visceral	An-Vi
			Tn-VS	abdominal ventral vis-
Labial	H-Lbm	ventral spiracle (when split)		ceral	An-VVi
Labial palpus	H-LbmPlp	spiracular atrium	Tn-SAtr	abdominal dorsal visceral	An-DVi
			Tn-AL		An-DB-
Cephalic ventral commissure	H-VC	anterior leg		abdominal dorsal branch visceral	[D,M,V] Vi
			Tn-PL		An-VB-
Cephalic ventral intersection	H-VX	posterior leg		abdominal ventral branch visceral	[D,M,V] Vi
Cephalic dorsal-ventral			Tn-VL		An-DLA-
branch	H-DVB	ventral leg		abdominal DLA visceral	Vi
		wing bridge	Tn-Wbr	terminal filament	A-TF
		anterior wing base	Tn-AWba	cercus	A-Cr
		posterior wing base	Tn-PWba
		costal-radial wing	Tn-W-c-r
		cubital-anal wing	Tn-W-cu-a
		flight muscle	Tn-FM
		spiracular branch	Tn-SB
		visceral	Tn-Vi
		asymmetric commissure	Tn-AsymC