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Crematogaster is an ecologically diverse genus of ants found worldwide, which are characterised by a distinctive heart-shaped gaster (abdomen), which gives them one of their common names, the Saint Valentine ant. [2] Members of this genus are also known as cocktail ants because of their habit of raising their abdomens when alarmed. [3]
Ants are eusocial insects of the family Formicidae and, ... perforated tube along the top of the body (called the "dorsal aorta") that functions like a heart, ...
Crematogaster scutellaris can reach a length of about 8 mm in the queen, while the workers rarely exceed 5 mm. These ants have reddish head and black thorax and abdomen. The shape of the abdomen is characteristic, as it gradually narrows toward the ape
The papillary muscles are muscles located in the ventricles of the heart. They attach to the cusps of the atrioventricular valves (also known as the mitral and tricuspid valves) via the chordae tendineae and contract to prevent inversion or prolapse of these valves on systole (or ventricular contraction).
In the worker ant the metasoma is divided into the narrow petiole and bulbous gaster. The abdomen technically includes the metasoma and the propodeum which is fused to the thorax. The gaster is the bulbous posterior portion of the metasoma found in hymenopterans of the suborder Apocrita (bees, wasps and ants).
Close-up photos show the punk ant. It has a jet-black body with a row of bright yellow-orange hair sticking up along its back. Henderson described the insect as “the world’s most punk rock ant.”
Crematogaster peringueyi – and other ants with a similar location and lifestyle, Linepithema humile and Formica perpilosa – are indirect pests of South African viticulture. [ 8 ] : 299 Addison & Samways 2000 and Mgocheki & Addison 2009 find that these ants interfere with the natural biological control of Planococcus ficus provided by ...
During hibernation, the body temperature drops to as low as 4 °C (39 °F). The heart rate falls to four to seven beats per minute—down from 50 to 68 at rest [39] —and the echidna can breathe as infrequently as once every three minutes, [79] 80 to 90% slower than when it is active. [39] Metabolism can drop to one-eighth of the normal rate. [81]