Alimentary Canal of the Adult Blow Fly, Chrysomya megacephala (F.) (Diptera: Calliphoridae)—Part I: Ultrastructure of Salivary Glands

The salivary gland ultrastructure of the adult male blow fly, Chrysomya megacephala (F.) (Diptera: Calliphoridae), was investigated at the ultrastructural level using light microscopy (LM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The salivary glands are paired structures composed of a single median deferent duct bifurcated into two long, narrow efferent ducts connected to the coiled tubular glands. The SEM image of the gland surface revealed that the basal lamina is relatively smooth in general, but the whole surface appeared as a trace of rough swollen insertion by intense tracheal ramification. Ultrastructurally, the salivary gland is enclosed within the basal lamina, and interdigitation cytoplasmic extensions were apparent between the adjacent gland cells. The basement membrane appeared infoldings that is similar to the complex of the labyrinth channel. The cytoplasm characteristic of the gland revealed high activity, based on the abundance of noticeable secretory granules, either singly or in an aggregated reservoir. In addition, mitochondria were found to intersperse among rich parallel of arrays rough endoplasmic reticulum. Thick cuticle, which was well-delineated and electron dense, apically lined the gland compartments, with discontinuity of the double-layer cuticle revealing a trace of secretion discharged into the lumen. Gross anatomy of the adult salivary gland was markedly different from that of the third instar of the same species, and structural dissimilarity is discussed briefly

Harness Saddle.

Patent for a new and improved harness saddle. This design "consist[s] of the central arched portion, having the central perforation and side notches, the hook having the screw and nut and lugs, and the jockeys, the latter hinged to the arch . . . and the pads" (lines 65-70)

Harness and Saddle.

Patent for a saddle and harness in which "several parts are united in a secure but detachable manner and which possesses certain other advantages" (lines 27-31)

First United States record of Ascalobyas (Neuroptera: Ascalaphidae), a range extension from northeastern Mexico to Texas

Volume: 101Start Page: 158End Page: 16

First Texas Records Of Five Genera Of Aquatic Beetles

Volume: 107Start Page: 49End Page: 6