Pedipalp in the context of Pincer (biology)

In many animals, a penis (/ˈpiːnɪs/; pl.: penises or penes) is the main male sexual organ used to inseminate females (or hermaphrodites) during copulation. Such organs occur in both vertebrates and invertebrates, but males do not bear a penis in every animal species. Furthermore, penises are not necessarily homologous.

The term penis applies to many intromittent organs, but not to all. As an example, the intromittent organ of most Cephalopoda is the hectocotylus, a specialized arm, and male spiders use their pedipalps. Even within the Vertebrata, there are morphological variants with specific terminology, such as hemipenes.

A chela (/ˈkiːlə/) – also called a claw, nipper, or pincer – is a pincer-shaped organ at the end of certain limbs of some arthropods. The name comes from Ancient Greek χηλή, through Neo-Latin chela. The plural form is chelae. Legs bearing a chela are called chelipeds. Another name is claw because most chelae are curved and have a sharp point like a claw.

Chelae can be present at the tips of arthropod legs as well as their pedipalps. In some pseudoscorpions, the chelate pedipalps can be venomous. Chelae can be functionally overlapping with chelicerae, which specifically refers to appendages used as mouthparts in Chelicerata. In spiders those usually contain venom glands, but in other chelicerate allies the chelicerae can be chelate without venom glands.

A chela (/ˈkiːlə/) – also called a claw, nipper, or pincer – is a pincer-shaped organ at the end of certain limbs of some arthropods. The name comes from Ancient Greek χηλή (khēlḗ), through Neo-Latin chela. The plural form is chelae. Legs bearing a chela are called chelipeds. Another name is claw because most chelae are curved and have a sharp point like a claw.

Chelae can be present at the tips of arthropod legs as well as their pedipalps. In some pseudoscorpions, the chelate pedipalps can be venomous. Chelae can be functionally overlapping with chelicerae, which specifically refers to appendages used as mouthparts in Chelicerata. In spiders those usually contain venom glands, but in other chelicerate allies the chelicerae can be chelate without venom glands.

The Eupnoi are a suborder of harvestmen, with more than 200 genera, and about 1,700 described species.

They consist of two superfamilies, the Phalangioidea with many long-legged species common to northern temperate regions, and the small group Caddoidea, which have prominent eyes and spiny pedipalps.

Laniatores is the largest suborder of the arachnid order Opiliones with over 4,200 described species worldwide. The majority of the species are highly dependent on humid environments and usually correlated with tropical and temperate forest habitats.

Laniatores are typically (relatively) short-legged, hard-plated, spiny Opiliones, common under logs and stones, in leaf litter and in caves. They often have spiny pedipalps and paired or branched claws on the third and fourth pairs of legs.The largest family is Gonyleptidae Sundevall, 1833, endemic of the Neotropics, with over 800 valid species and showing many cases of maternal and paternal care.