The pulvillus is From Miall and Denny, The Cockroach, Lovell Reeve & Co.
- Head and Jaws of Cockroach (Blatta).
Usually present on the thighs, shins and feet so delicate as to be termed " hairs," others After Miall and Denny, The Cockroach, Lovell Reeve & Co.
- Legs and Ventral Thoracic Sclerites of Female Cockroach (Blatta).
From Miall and Denny, The Cockroach, Lovell Reeve & Co.
On the inner surface are two horn-like processes in contact with a After Miall and Denny, The Cockroach, Lovell Reeve & Co.
From Miall and Denny (after Newton), The Cockroach, Lovell Reeve & Co.
- Brain of Cockroach from side.
The dorsal vessel is prolonged anteriorly into an aorta, through which the blood is propelled into the great After Miall and Denny, The Cockroach, Lovell body-cavity or haemoReeve & Co.
The paired testes of the male consist of a variable number of seminal From Miall and Denny, The Cockroach, Lovell Reeve & Co.
- Ovaries of Cockroach, with Oviducts Od and Colleterial Glands CG.
In some bristle-tails and may-flies, the two vasa deferentia open separately, but usually they lead into a sperm-reservoir, whence issues a median C From Miall and Denny, The Cockroach, Lovell Reeve & Co.
The From Nussbaum in Miall and Denny's, Cockroach, Lovell outer of these two Reeve & Co.
In reference to the structure From Nussbaum in Miall and Denny, The Cockroach, Lovell Reeve & Co.
- Cross section of Embryo of German Cockroach (Phyllo- labrum represent, as already said, an unpaired median outgrowth dromia).
Each coelomic pouch - as traced by Heymons in his study on the development of the cockroach (Phyllo- dromia) - divides into three parts, of which the most dorsal contains the primitive germ-cells, the median disappears, and the ventral loses its boundaries as it becomes filled up with the growing fat body (fig.
In the cockroach embryo, before the segmentation of the germ-band has begun, the primitive germ-cells can be recognized at the hinder end of the mesoderm, from whose ordinary cells they can be distinguished by their larger size.
- Cross sections through Abdomen of German Cockroach Embryo.
These exceptions may be briefly summarized as follows: (1) Certain larvae, provided with food that may be adequate in quantity but deficient in nutriment, may live and go on feeding for many From Miall and Denny (after Vayssiere), The Cockroach, Lovell Reeve & Co.
Denny, Structure and Life-history of the Cockroach (London, 1886); B.
Denny's Cockroach (London, 1886), and L.
COCKROACH 1 (Blattidae), a family of orthopterous insects, distinguished by their flattened bodies, long thread-like antennae, and shining leathery integuments.
The common cockroach (Stilopyga orientalis) is not indigenous to Europe, but is believed to have been introduced from the Levant in the cargoes of trading vessels.
The American cockroach (Periplaneta americana) is larger than the former, and is not uncommon in European seaports trading with America, being conveyed in cargoes of grain and other food produce.
See generally Miall and Denny, The Structure and Life History of the Cockroach (1887); G.
On the moors in late summer the mantis (kama-kiri-niushi) is commonly met with, and the cricket (kurogi) and the cockroach, abound.
Eugereon is a remarkable Permian fossil, with jaws that are typically hemipterous except that the second maxillae are not fused and with cockroach-like wings.
The Dermaptera and the Orthoptera agree in having welldeveloped mandibles, so that the jaws are adapted for biting; in the incomplete fusion of the second maxillae (which form the labium) so that the parts of a typical maxilla can be easily made out (see the description and figures of the cockroach' g.
The female of the common cockroach (fig.
- Common Cockroach (Blatta orientalis); a, female: b, male; c, female (side view); d, young.
Information as to the internal structure of a typical orthopteron - the cockroach - will be found under Hexapoda.
- Egg-purse of American Cockroach (Periplaneta americana).
Denny, The Cockroach (London, 1886); E.
In Trinidad the young are esteemed a great delicacy for the table by many, though some persons object to their peculiar scent, which resembles that of a cockroach (Blatta), and consequently refuse to eat them.