prothoracic metatarsus [FBbt_00004670]

First tarsal segment of the prothoracic leg. Proximally, it articulates with the tibia and distally with the second tarsal segment. Its surface is covered with eight longitudinal rows of bristles and with transverse rows of bristles (TR) in the anterior compartment, between proximo-distal rows 7 and 8. There is sexual dimorphism in the number of TRs (transverse row bristles, TR). In males, 2 TRs are replaced by the sex comb and one central bristle.

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prothoracic metatarsus

ID: FBbt_00004670

Adult Anatomy

First tarsal segment of the prothoracic leg. Proximally, it articulates with the tibia and distally with the second tarsal segment. Its surface is covered with eight longitudinal rows of bristles and with transverse rows of bristles (TR) in the anterior compartment, between proximo-distal rows 7 and 8. There is sexual dimorphism in the number of TRs (transverse row bristles, TR). In males, 2 TRs are replaced by the sex comb and one central bristle.

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## Classification

Relationships

bearer of: sexually dimorphic
develops from: presumptive prothoracic metatarsus

Alternative Names

Synonym	Scope	Reference
T1 Ts1	exact synonym	Schubiger et al., 2012
prothoracic tarsal segment 1	exact synonym
T1 tarsal segment 1	exact synonym
prothoracic basitarsus	exact synonym	Snodgrass, 1935

Parts of prothoracic metatarsus (5 total)

Thumbnail	Name	Tags
	prothoracic metatarsal segment bristle longitudinal row	Adult, Mechanosensory_system, Nervous_system, Sense_organ
	prothoracic metatarsal segment central bristle	Adult, Mechanosensory_system, Nervous_system, Sense_organ
	prothoracic metatarsal segment transverse row bristle	Adult, Mechanosensory_system, Nervous_system, Sense_organ
	sex comb tooth	Adult, Nervous_system, Sense_organ
	sex comb	Adult, Anatomy

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Subclasses of prothoracic metatarsus (2 total)

Thumbnail	Name	Tags
	metatarsus of female prothoracic leg	Adult, Anatomy
	metatarsus of male prothoracic leg	Adult, Anatomy

View all 2 results in VFB →

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