442 
Beekeeping 
LbPlp, 
labial palpus. 
Lc, 
lacinia. 
Let, 
lancet of sting, equivalent to first gonapophysis ( 1G ). 
Lg, 
ligula. 
LGl, 
“lubricating” gland of sting (not shown in figures). 
Lin, 
median lobe of lingua or hypopharynx. 
Lm, 
labrum. 
LMcl, 
longitudinal muscles. 
Imcl, 
ventral longitudinal muscles of thorax. 
LmNv, 
labral nerve. 
Lr, 
lorum. 
LTra, 
trachea of leg. 
Lum, 
lumen, the cavity of any hollow organ, whether the 
glossa, sting, alimentary canal, or gland. 
M, 
media, fourth vein of wing. Mi-Mt, first to fourth 
• 
branches of media. 
m, 
median plate or plates of wing base. 
Mai, 
Malpighian tubules. 
Mb, 
intersegmental membrane. 
mb, 
membrane. 
m-cu, 
medio-cubital cross-vein. 
MD, 
disklike muscle apodeme. 
Md, 
mandible. 
lMdGl, 
outer saclike mandibular gland. 
SMdGl, 
inner racemose mandibular gland. 
MdNu, 
mandibular nerve. 
Mes, 
mesathorax, designated by figure 2 placed after and 
below any thoracic symbol. 
Met, 
metathorax, designated by figure 3 placed after and 
below any thoracic symbol. 
Mi, 
the chitinous plates of the neck collectively, the “mi¬ 
crothorax,” individually designated mi. 
mi, 
cervical (microthoracic) sclerites. 
m-m, 
median cross-vein. 
M ps, 
mouth parts or troplii. 
Ml, 
mentum. 
Mlh, 
mouth. 
Mx, 
maxilla. 
MxPlp, 
maxillary palpus. 
MxNv, 
maxillary nerve. 
N, 
notum. 
Nu, 
nucleus. 
Nv, 
nerve. 
0, 
ocellus. 
Ob, 
oblong plate. 
