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. 



LMd, longitudinal muscles. 



Imd, 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-M 4 , first to fourth 



branches of media. 



ra, 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. 



IMdGl, outer saclike mandibular gland. 



2MdGl, inner racemose mandibular gland. 



MdNv, 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 trophi. 



Mt, mentum. 



Mth, mouth. 



MX, maxilla. 



MxPlp, maxillary palpus. 



MxNv, maxillary nerve. 



N, notum. 



Nu, nucleus. 



Nv, nerve. 



0, ocellus. 



06, oblong plate. 



