Codex: Siel/zh-hans

迷人又占有欲强的吐丝者。小心，别被它们缠得太紧。

名称（单数与复数）： 西尔人

Sexes: Male, Female, Herm (See Siel Sexes and Genders)

Height: Generally six feet high with a total body length of twelve feet.

Weight: Over one hundred kilos (220 lbs).

Hair: Very dark or very light blue, purple, or pink, as well as black or white. Many siel choose to recolor their hair.

Eyes: Intense blues, purples, and pinks.

Skin Coloration: Steel Blue

Features

Siel are fairly easy to spot in a room, mostly because they take up so much of it. Most humans observe that siel resemble a blue tauric caterpillar. The feeling is mutual, as siel note humans resemble a ‘Yorri’, one of their native humanoid animals.

从头部开始看，西尔人的头顶前方伸出一对向后扫的触角。和身体其他部位一样，触角呈蓝灰色。他们的毛发颜色从深蓝、浅蓝、紫色或粉色，到黑色或白色不等，长度也可以任意。

西尔人的眼睛色彩极其鲜艳，很容易脱颖而出。虹膜外圈通常是黑色，内圈则是明亮的蓝色、紫色或粉色。颜色向外晕开的样子，让他们的眼睛看起来像正在发生日食的星辰。

他们的颈部有细窄的水平裂缝。这是一对不起眼的鳃，当口部无法呼吸空气时，可以用来呼吸。

西尔人的胸部与人类相似——女性乳房通常为 A 到 D 罩杯，男性胸部则是平坦的。不过，他们的腹部肌肉像毛虫一样分节，被分割成方形区域。

从太阳神经丛的高度开始，身体两侧各有两排间距很大的尖刺状单关节附肢。紧贴皮肤时，它们看起来像小小的 V 形“铠甲缝隙”；但拉开后，则像蜈蚣的细小足肢——这种外观会让某些种族感到不安。

从正面看，西尔人的髋部、腿部和大腿显得异常粗壮，带有膝盖和两趾分叉的脚趾。然而从背后看，很明显他们的身体继续延伸成一条长长的、毛虫般的“另一半”。这部分身体非常厚实、圆润，略显凹凸不平，底下长着腿。西尔人总共有八条腿。

在最后一对腿的位置，西尔人的身体有着非常人类化的臀部。他们有一条一英尺长、像毛虫一样的尾巴。这条尾巴向上翘起，可以朝任意方向转动，用来喷射他们独特的丝。

西尔人的手有六根手指，对触碰极其敏感。当这些手指按在地面或某人的胸口等表面上时，他们能够感知最细微的震动。

由于身体改造长期以来一直是西尔人文化的一部分，许多西尔人会改变自己出生时的毛发以及其他身体特征。

西尔人的性别与性别认同

很久以前，西尔人只有一对生殖器，位于最后一对腿之间。然而，经过数百年为了与其他银河居民交配而进行的改造和杂交，至少有一半的西尔人天生也拥有前方生殖器。没有前方生殖器的人，往往会通过改造来“补齐”它们。

因此，几乎所有西尔人都有两套生殖器——一套在前，一套在后。由于西尔人天生或人工获得的生殖器组合并不受限制，因此有许多天生的扶她和雌雄同体者（包括雄性和雌性）、带阴道的男孩，以及带阴茎的女孩。即便如此，大多数西尔人仍强烈认同自己是男性或女性，而不是第三种性别。

西尔人的女性生殖器无论位于前方还是后方都相同。外阴唇形成 Y 形褶皱，Y 的底部始终朝下。西尔人的阴蒂位于上方褶皱下方。

这三片外阴“褶瓣”内部是阴道口，内部凹凸不平且呈分节状，像一条从内侧翻过来的毛虫背部。这种结构既类似于内部缓冲垫，也发挥着同样的作用，每一节都有一块自行收紧的肌肉。

Male siel genitals strongly resemble a caterpillar’s lumpy, segmented outside and ends in a small pink, fleshy tip. This tip is smaller than a human glans. This phallus ranges wildly in size from three to nine inches. They have two meatus (colloquially known as “cock holes”) that ejaculate twin streams of seminal silk.

A siel’s male genitals and testicles are kept within their body, with the former emerging only when they are aroused. The rest of the time this genital region is flat and only features a blue genital slit from which the phallus emerges. Because of this, it is particularly hard to identify siel ‘traps’ unless they are wearing nothing at all.

Many siel are born with or get a small ‘thigh gap’ mod beyond their front thighs to make wearing humanoid garments easier. All siel have an anus located below their tail and above their back genitals.

Siel Silk

Located in a siel’s rump is a large silk producing sac. This makes up a large portion of their body, allowing all siel to produce incredible amounts of “siel silk”. Siel silk is distinctly different from terran silk and possesses incredible tensile strength and toughness.

Siel can produce silk from their tail sac in various forms, varying in stickiness, thickness, and malleability. Using these, the siel can produce tiny or large strings and weave them into whatever they desire. They shoot this silk out of the tip of their tails.

While there are many artificially manufactured substances superior to it, siel silk is far easier to make and is very vogue. A shirt made of siel silk is not only fashionable, but also light, flexible, and shock absorbent. In all lines of work, siel outfits offer eye-catching protection at an affordable price.

Siel produce finer, higher quality silk when their back genitals or anus is sexually pleasured, as this helps prime the production of their nearby silk sacs. Pleasuring their front genitals does nothing for silk production.

No matter how sticky or tough it is, silk cannot get entangled or stuck to their own webs. A siel’s body is covered in microscopic hairs that can microscopically ‘cut’ this silk. Their uniquely sensitive hands have the most of these, allowing the species to use them as natural scissors for their own silk.

When weaving silk, siel will often attach silk strings to their claw-like prolegs, using them as makeshift holding hooks.

Siel Mating and Reproduction

A siel’s silk sac is closely tied to their reproduction and culture for several reasons. The first is that a siel’s genitals and anuses are directly tied to their silk sacs.

Both a siel’s anus and pussy, regardless of location, is lined with their special silk. This is also true for the outside of a siel phallus shortly after emergence, providing natural lubrication.

Whether a male or female siel is engaging in intercourse, the result is the same. Usually halfway through intercourse, an aroused siel secretes a ‘sticking silk’ from the exterior of their phallus, or the inside of their vaginal or anal walls. This is similar to an ausar’s knotting, though it is entirely liquid based. This practice is colloquially known as ‘silk knotting’.

Once silk knotted, non-siel mate finds themselves stuck and unable to withdraw, trapped by the siel’s sticky, silky genitals. This sticky substance tugs at the partner’s inner walls or sensitive phallus from all directions, intensifying the more they thrust or try to withdraw.

A siel phallus shoots copious amounts of silk-like semen, usually enough to ensure an orifice is totally packed full. Usually after mating with a pussy (and sometimes an anus), a siel will shoot a burst of their normal, sticky silk onto the partner’s entrance. This ensures the semen is trapped inside and acts as both a method of ensuring impregnation and/or ‘claiming’ their partner.

Individuals who have been mated with and sealed in this fashion are easily identifiable by their bloated abdomens, resembling light or heavy pregnancy depending on a siel’s potency. After the silk dissolves, a large portion of the semen often rushes out and the individual ‘deflates’.

A siel pussy, however, keeps a mate silk knotted until they have utterly flooded the insectile womb with semen, making certain eggs receive proper fertilization. All siel with a front or back pussy have a womb, though it is always located in their caterpillar-like abdomen, as semen travels either back or forward.

Any siel with a womb has a monthly ovulation phase where they produce, hold, and then expel unfertilized eggs through their rearmost or frontmost vagina. If their eggs are fertilized by being washed with semen, they hold these and produce no more eggs until birth six months later.

During pregnancy a siel’s insectoid stomach, humanoid breasts and stomach swell. While the insectoid stomach swells because of the growing child, the humanoid stomach swells as this is where residual eggs are pushed during the pregnancy period. A Siel female generally gives birth to a clutch of four to eight young at a time.

Most siel reach the cusp of adulthood in sixteen years, slightly shorter than the human norm. As a species, siel have a natural lifespan of up to two centuries and show very few external signs of aging.

Even though siel are fairly fertile, most take contraceptives that prevent unwanted pregnancies. While unprotected sex frequently results in pregnancy, protected sex rarely does.

History and Culture

Siel have been part of mainstream galactic society for centuries. They hail from the arid world of Xhixia, a planet with sharp, sky touching mountain peaks and deep valleys. Located in the Liliaran Nebulae, it is their birth world and the capital planet of their interstellar empire.

Since the only flat parts of Xhixia besides the oceans are artificial, the siel evolved to heavily rely on their natural silk weaving skills to survive. Siel cities are literally woven out of tightly knit silk and packed together until they become ‘solid’.

From their meticulously woven silk cities, siel culture thrived and spread across Xhixia. Later discovered by an Ausar exploratory team, the siel quickly found their niche in galactic society. Not only did they excel at providing their special silk, the Siel were gifted in any area that required fine detail and deft hands.

In the musical world, siel are incredibly gifted players of plucked string instruments. Due to their extremely sensitive six fingered hands and lifetime of working with string vibration, they are truly unparalleled in this area.

One of the most well known traits of siel is their culture of tight fitting outfits and bondage activities. Before body modding was introduced to siel society, male siel were strongly predisposed towards erectile disfunction. This led to a culture of bondage where either a female siel would tie up a male’s genitals (or they would tie up their own) to increase blood circulation.

Over time, bondage has become not only part of siel mainstream culture, but an integral part of their culture. Females and males alike displayed their silk-tying process on their own bodies like a peacock plumage, attempting to attract potential mates.

Even after the original problem of erectile dysfunction was solved, siel still consider it ‘lewd’ not to tie up a mate during intercourse. Siel attitudes towards non-bondage are similar to human attitudes towards anal intercourse in the early twenty-first century.

Siel as a species have wholeheartedly embraced body modding. At first, the siel used it to solve their species’s disposition towards erectile disfunction. Since then they have used it to give their species an extra set of genitals between their front legs. When they are not born with them naturally, genital modding is subsidized by most siel planetary governments.

It is common for a siel to mod their natural hair, eye, and skin color. There are still small sects of conservative siel who traditionally oppose both body modding and having sex without bondage, considering it ‘impure’ and ‘immoral’ behavior.

Religion

Siel have a native monotheistic religion called Zyism, centered around a creator-deity called “Zyi”. The siel believe Zyi created the universe and their life spans, tying them all together in a gigantic invisible web called “the life thread”.

Zyi spends their time tugging on the strings of each and every life, though their reasons are unknown. The siel believe Zyi simply does this because they are Zyi, and no other reason. The siel believe Zyi is both female and male and has many arms and legs - as many as there are people in the universe.

The siel do not worship Zyi as much as recognize them. They believe manipulating Zyi is pointless, and prayer is an attempt at manipulation.

Extremist Zyi worshippers often believe that sex without bondage and body modding is impure and against nature, a byproduct of siel culture being corrupted by mainstream galactic society.

Most Zyi worshippers do not share this belief, however, many non-Zyi worshippers lump them together with these much louder fanatics.