Fig. [197].—Latrodectus mactans, ♂, natural size.
Trifling causes may have a fatal effect upon a man in ill health, and it is quite possible that death has sometimes resulted from the Tarantula’s bite. Its effect upon a healthy subject, however, is certainly not serious. Goldsmith, in his Animated Nature, entirely discredits the current stories about this animal, saying that the Italian peasants impose upon credulous travellers by allowing themselves, for money, to be bitten by the Tarantula, and then feigning all the symptoms which are traditionally supposed to ensue.
There is a genus of the Theridiidae, by name Latrodectus, whose poisonous reputation almost rivals that of the Tarantula. It is remarkable, moreover, that it is regarded as particularly dangerous in such widely separated portions of the world as Madagascar, New Zealand, Algeria, the West Indies, and North America. These spiders, strangely enough, are by no means particularly large or formidable in appearance.
There are two species in Madagascar, known to the natives by the names of Mena-vodi and Vancoho. Vinson[[282]] describes the terror which is locally inspired by the first-named species, whose bite is believed to be fatal unless measures are promptly taken to counteract the poison. They sometimes cauterise the wound, but the usual treatment consists in inducing profuse perspiration—a method of cure which recalls the Tarantula dance of Southern Europe. Flacourt[[283]] mentions the Vancoho as the most dangerous animal of Madagascar, and more formidable than the scorpion. He relates cases among his own negroes where the bite was followed by a condition of syncope which lasted two days.
A New Zealand species is known by the natives as the Katipo. It is of about the size of a pea, and almost black in colour. Mr. Meek of Waiwera gives a most circumstantial account of the effect of its bite upon his son.[[284]] During the four days which followed the bite he suffered excruciating pain, which spread from his leg to the spine, arms, and chest, and he lost twelve pounds in weight. Relief was obtained by frequent doses of brandy and the use of a liniment.
The natives of New Zealand have a great horror of this spider, but hold the curious belief that its death will ensure the cure of any one it may have bitten. If unable to find it, they will burn the house down rather than allow it to escape. Their dread, however, is confined to a variety which lives among the sedge of the sea-beach, and they carefully avoid sleeping in such places.
Two of the best authenticated cases of serious results ensuing from the bite of a spider of this genus come from North Carolina.[[285]]
A farm labourer in the employ of Mr. John Dick of Greensborough was bitten by Latrodectus mactans about half-past eight in the morning, and died between ten and eleven o’clock at night. Small pimples were raised in the neighbourhood of the bite, but no puncture was discernible. Intermittent pains and spasms ended in a comatose condition from which he did not rally. The man appeared previously to be in perfect health.
Another man on Mr. Dick’s farm was bitten by the same species of spider. He resumed work, but a spasm of pain caused him to mount his horse and endeavour to ride home, but he fell off, and lay in a state of unconsciousness. He was found in this condition by a fellow-workman, and taken home. Large quantities of whisky were administered without any intoxicating effect, and this afforded some relief from the constantly-recurring spasms. The paroxysms continued for three weeks, and two months elapsed before he was able to resume work. On the ankle where he was bitten pimples appeared as in the previous case, and these broke out again, long after the occurrence, whenever he became overheated in his work.
These accounts are sufficiently circumstantial and well authenticated, but the fact of the actual bite depends upon the statement of the victims alone, and they may possibly have mistaken the cause of their trouble.