. The anatomy of the honey bee. Insects; Bees; Bees Anatomy; Honeybee Anatomy. 56 THE AX ATOM Y OF THE HOXEY BEE. the general surface and mostly concealed between the mesothorax and the metathorax. In higher families such as the Pompilidae the postnotum of the mesotergum is entirely concealed by invagination, but it still carries a very large phragma. TYnen. now. we come to the highest members of the order we find that the median part of the postnotum in the mesothorax is gone entirely and that it is repre- sented only by the lateral arms (figs. 22. PN; 23 A. PX2) carrying the large, purely in
. The anatomy of the honey bee. Insects; Bees; Bees Anatomy; Honeybee Anatomy. 56 THE AX ATOM Y OF THE HOXEY BEE. the general surface and mostly concealed between the mesothorax and the metathorax. In higher families such as the Pompilidae the postnotum of the mesotergum is entirely concealed by invagination, but it still carries a very large phragma. TYnen. now. we come to the highest members of the order we find that the median part of the postnotum in the mesothorax is gone entirely and that it is repre- sented only by the lateral arms (figs. 22. PN; 23 A. PX2) carrying the large, purely internal postphragma {Pph). The mesopleurum is large and consi-ts principally of the episternum (fig. 21. Eps2). which. hoAvever. is continuously fused with the meso- sternum (figs. 20 and 21, S2). The pleural suture (fig. 21. PS2) i- short and sinuous and does not reach more than half way from the wing process to the base of the middle leg. The epimerum is reduced to a small double plate lying above the episternum and posterior to the wing process (figs. 21. E }> and 34 A. Epm and Epm). The pleural ridge (fig. 24 B. PR) is weak, but the wing process (WP) is well braced by a num- ber of accessory internal ridge-. One preparapterum (~P) and one postparapterum (SP) are present. Lying behind the postparapterum i- another larger sclerite (fig. 24 A and B. />//). whose anterior end is articulated to the edge of the epimerum and Avhose posterior tapering end is loosely asso- ciated with the terminal arms of the postnotum (tig. 22. PN and jm). This sclerite might be regarded as the fourth parapterum, but it is much more probably the representative of a small terminal bar of the postnotum present in other Hymenoptera. such as Pepsis^ which connects this tergal plate with the epimerum. though in this genus it is not detached from the main postnotal sclerite. Both the mesosternum (fig. 20. S2) and the metasternum (S3) con- tribute to the formation of a large entosternum (Fu2^s).
Size: 2044px × 1222px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbees, booksubjectinse
