part_of axillary sclerite pterothorax second axillary sclerite HAO:0000921 The axillary sclerite that articulates ventrally with the pleuron and medially with the first axillary sclerite, posteriorly with the third axillary sclerite and is connected with the base of the radial vein. endopterale endopteron lamina axillaris apicalis malleus pterale secundum scleritum axillare secundum second axillary