biology

Ooperipatellus nickmayeri

Ooperipatellus nickmayeri is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Ooperipatellus nickmayeri rather than just read about it. In short: Ooperipatellus nickmayeri is a species of oviparous velvet worm in the family Peripatopsidae. This species is larger than any other in the genus Ooperipatellus.

Key takeaways

Ooperipatellus nickmayeri belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Ooperipatellus nickmayeri to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Ooperipatellus nickmayeri from memory before moving on to harder problems.

Reference excerpt

Ooperipatellus nickmayeri is a species of oviparous velvet worm in the family Peripatopsidae. This species is larger than any other in the genus Ooperipatellus. With a body size exceeding 60 mm in females and 30 mm in males, these velvet worms can be more than twice as long as other species of this genus.

Discovery This species was first described by the biologists Ivo de Sena Oliveira and Georg Mayer in 2017 based on ten specimens, including a male holotype, three female paratypes, and six other specimens (five females and one male). These specimens were collected from rotting logs and leaf litter in a small fragment of forest at an elevation of 545 meters near the Lyell Highway between Tarraleah and Wayatinah in the Central Highlands region of Tasmania. The authors of the original description named this species for the six-year old son (Nick Mayer) of one of the authors, who suggested a stop along the road during which the authors discovered this species in 2013. The holotype is deposited in the Queen Victoria Museum and Art Gallery in Launceston, Tasmania.

Taxonomy In 2026, the zoologists Arianna Lord, Shahan Derkarabetian, Shoyo Sato, and Gonzalo Giribet conducted a phylogenetic analysis of the Tasmanian species of Ooperipatellus based on molecular data. This analysis indicates that O. nickmayeri is a junior synonym of another species in the same genus, O. spenceri. Other references, however, list O. nickmayeri as a valid species.

Description These velvet worms have 14 pairs of legs in both sexes, with the last pair reduced in size but used for walking. Each foot features three complete spinous pads, with the first and third pads smaller than the second. Most legs also feature a fourth fragmented pad. The nephridial tubercle on the fourth and fifth leg pairs is located in the third pad, dividing the pad into two unequal parts. Each foot features paired claws and three distal foot papillae (one anterior, one medial, and one posterior). The males of this species feature crural tubercles on leg pairs 6 through 13. These tubercles are smooth at the base, with no scales, but feature cone-shaped tips with tiny scales. These velvet worms vary in color from blue to predominantly orange-brown, with a light blue ventral surface. Each antenna features 30 to 32 rings, with tan or orange bands on every fourth ring starting with the 15th most distal ring and ending with ring 27 or 31. The slime papillae are also tan or orange. A furrow runs down the middle of the back. The dorsal integument features dermal papillae arranged into 12 complete plicae (transverse ridges) per segment. The gonopore in the male is cruciform, with the transverse slit longer than the longitudinal slit. The ovipositor in the females is large and conspicuous, with a genital opening in the form of a longitudinal slit at the distal end. The anus is located at the terminal end of the body in both sexes. The males of this species feature a pair of anal gland openings in front of the anus. The spinous pads, the crural tubercles and the genital pad in males, and the ovipositor in females are all whitish or light orange. Notwithstanding the large body size, which distinguishes this species from others in the same genus, this species exhibits many of the traits that characterize this genus. These features include oviparous reproduction, 14 leg pairs in each sex, females with a well-developed ovipositor, males with a cruciform gonopore, and the absence of any modified head papillae or head organ. Phylogenetic analysis based on molecular data confirms the placement of this species in the genus Ooperipatellus. This species also exhibits a set of features aside from its large size that distinguish these velvet worms from other species in this genus. These features include a distinctive color pattern, including the sequence of bands on the antennae, the number of plicae per segment, and the form and number of the crural tubercles in males. Furthermore, karyological analysis reveals a distinct karyotype for this species, with a heteromorphic pair of sex chromosomes (XY) and the greatest number of chromosomes (2n = 50 XY) reported to date for a species in the family Peripatopsidae.

References

Worked examples

Example 1 — a first encounter with Ooperipatellus nickmayeri

Start with the simplest possible case. Write down what Ooperipatellus nickmayeri claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Ooperipatellus nickmayeri before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Ooperipatellus nickmayeri ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Ooperipatellus nickmayeri

In research: Ooperipatellus nickmayeri appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Ooperipatellus nickmayeri in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Ooperipatellus nickmayeri is common in secondary-school and first-year university syllabi. It links to neighbouring topics Animals described in 2017, Onychophora of Oceania, Onychophora species, so understanding it makes those chapters shorter.
In everyday life: Look for Ooperipatellus nickmayeri outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Ooperipatellus nickmayeri in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ooperipatellus nickmayeri means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Ooperipatellus nickmayeri out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ooperipatellus nickmayeri in simple terms?

Ooperipatellus nickmayeri is a species of oviparous velvet worm in the family Peripatopsidae. This species is larger than any other in the genus Ooperipatellus.

Why does Ooperipatellus nickmayeri matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Ooperipatellus nickmayeri?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Ooperipatellus nickmayeri.