The Nothing

Scorpion Glossary of Terms

23 posts in this topic

Aculeus - the actual hypodermic needle-like singer on the Telson.

Arborial - living on trees and other large plants. Centruroides species tend to be arborial.

 

Book lung - a simple type of lung found in spiders and scorpions. Easily seen on the underside of both

 

Carapace- hardened plate the covers the prosoma dorsally (the head)

Cephalothorax (or Prosoma) otherwise known as the head, this are where the eyes are located.

Chela- The claw of a scorpion. Including the Tibia and Tarsus.

Chelicera (pl., chelicerae) the little claw-like mouthparts of a scorpion.

 

 

Diurnal - active during the daylight hours.

 

Ecdysis - the process of molting, or shedding the exoskeleton.

Exoskeleton - the skelton or supporting structure on the outside of an arthropod's body.

Exuviae - the cast (shed) exoskeleton of an arthropod.

 

Forceps - a tool for picking up small insect or arachnid specimens; tweezers.

 

Gravid - pregnant

 

Instar - the stage of an insect between successive molts; for example, the first instar is the stage between birthing and the first molt.

 

Lateral Eyes- usually paired, scorpions have 0-5 total Lateral Eyes found on the front edge of the carapace.

 

Medial Eyes- the pair of eyes found on the dorsal (top) of the carapace.

Mesosoma - the body. Part of the Abdomen, has seven separate segments.

Metasoma - the tail. Part of the Abdomen, has five connected segments.

 

Nocturnal - active at night.

 

Obligate Burrower - These scorpions are compelled to burrow. Hadrurus and Opistopthalmus speecies are examples of Obligate Burrowers.

Opportunistic Burrower - These scorpions will often take over burrows left by other animals, or in small hides under rocks, tree roots, etc. Most Parabuthids are Opportunistic Burrowers.

 

Parthenogenesis - the ability to produce fertile eggs without male involvement.

Pectine - a "V"-shaped comb-like appendage on the abdomen of a scorpion that has sensory functions.

Pinheads - Very small crickets. Perfect for feeding small 2nd instar scorpions

 

Seta (pl., setae) an external bristle, or stout hair.

Stridulate - to make sound by rubbing two body parts together.

Substrate - ground material (sand, soil, etc).

 

Tarsus- Movable "finger" of the chela. Also the 7th segment of each leg.

Telson - the final segment of the metasoma. contains the venom glands and Aculeus.

Tibia- The Fixed finger of the chela, sometimes refered to as the manus. Also the 5th leg segment.

 

Vesicle- Bulbous part of telson which houses venom glands.

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You could add:

 

Tarsus (both the movable "finger" on the chelae and the "claw" on the "foot")

Vesicle

Medial eyes

Lateral eyes

Manus

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Lateral Eyes - two to five pairs along the front of the carapace

Median Eyes - two pairs on top of the carapace

 

Femur - connects to Patella

Patella - connects to Chela

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modified

i left out the Manus as it is properly refered to as the Tibia

Not according to Manny Rubio it isnt... hahahaha :D

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Yeah, Ive seen it both ways... Quite frankly, Im tired of hearing conflicting stories in the arachnid world. Its out of control and I dont know who to believe...

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supernumerary granules

internal/ external granules

median keels

ventral, distal, basal, dorsal, lateral

spiracles

nerve ganglia

fulcra

and so on, and so on....

 

all those things you need to read twice before you can understand it....

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i left out the Manus as it is properly refered to as the Tibia

 

Actually, the manus is mentioned in Polis, along with its appropriate definition (page 12 for those following along at home). The manus refers to only the area proximal to the fixed finger -- the "hand" of the chela, as it were. It is a term rather extensively used in the literature and probably deserves a position in the glossary.

 

Incidentally, Arborial is spelled Arboreal.

 

Cheers,

Dave

Edited by skinheaddave

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Gravid - pregnant

Technically, I think gravid has to do with eggs and pregnant with live bearing. I may be wrong, but this is what I've understood its meaning to be.

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Gravid - pregnant

Technically, I think gravid has to do with eggs and pregnant with live bearing. I may be wrong, but this is what I've understood its meaning to be.

from my understanding, they keep the eggs and incubate them inside them. the eggs hatch inside them and then they give live birth.

did i just repeat myself?

raychel

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from my understanding, they keep the eggs and incubate them inside them. the eggs hatch inside them and then they give live birth.

 

Sort of. There are actually two types of development -- apoikogenic, in which the embryo develops inside a casing that is seperate from the mother and katoikogenic in which the embryo lacks a casing and has a special structure with which it is connected to the mother. That being said, both forms derive nourishment from the mother, though apoikogenic scorpions do also have some yolk in their casing. Polis and Sissom (1990 in The Biology of Scorpions) indicate that both forms should be considered viviparous. This is in slight contrast to what you have indicated, which would be considered oviviparous in that the eggs develop with no connection to the mother, though she does retain them within her body during development. This type of development is displayed by various types of snakes, for example.

 

Cheers,

Dave

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I see diurnal and nocturnal listed above but not crepuscular:

 

The low light (twilight) periods of the morning and evening (dawn and dusk).

 

Anteriad = towards the front (anterior)

Posteriad = towards the rear (posterior)

Edited by barkscorpions

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xeric - belonging to a dry or arid habitat

 

mesic - belonging to a moist or humid habitat

 

arboreal is misspelled, not that it matters much

if arboreal is up there then terrestrial should be as well

Edited by Rasputin

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How would you pronounce Aculeus??

 

I pronounce things how they seem most natural to me, so I might be wrong (no formal latin training!)

 

I would say:

 

A-cue-lee-us

 

A(short A sound, not long)-cue (like a pool cue) - lee (rhymes with we!) - us ( us and them!)

 

 

That's how I do it, just break it down in to whatever sounds natural to you, and relate it to terms you already know.

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intra-median ocular - the triangular region outlined by the placement of the median and lateral eyes; sometimes prominent as texture or coloration

 

carinate?

tubercule?

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