Animal morphology

1. Without needle squid, the software is medium and large, back and belly flat, sacral part of the oval, generally about 157mm, about 2 times the width. The head is about 29mm long, with large eyes, oval olfactory sink behind the eyes, mouth at the center of the head, 4 pairs of wrists and 1 pair of wrists around the mouth. The lengths of the wrists are similar, the sequence is 4>1>3>2, and there are 4 rows of suction cups on the inner side. The suction cups are similar in size. The outer edge of the keratinous ring on the suction cup wall has tapered conical teeth; however, the left wrist has a fourth wrist. For the genital wrist, it is characterized by a small suction cup that occupies approximately 1/3 of the entire wrist, and the central and top suction cups are normal. The length of the wrist is generally longer than the length of the axillary, and the ear of the tentacle is small and narrow, about 40 in length. There are 20 rows of suction cups, similar in size, and the outer edge of the keratinoid ring has small round teeth. There is a funnel on the ventral surface of the head. The ink sacs in the body below the funnel tube communicate with each other. When living, there is a clear white spot on the back of the beak. The male is large and the female is small. There are flesh fins on both sides of the sacral part, the whole edge, the front end is narrow, and gradually widens backwards. The left and right fins are separated at the ends. There is a gland hole at the end of the posterior ventral surface. After the capture, reddish-brown fluid flows out. The inner shell on the back of the coat cavity is oblong in shape and is about 3 times longer than the width of the outer shell. The horny margin is well developed and the end forms a keratinous plate.

2. Golden squid, medium and large body, zygomatic oval, generally about 200mm, about 1.5 times the width, head length of about 30mm, wrist sequence is 4> 1> 3> 2, sucker 4 lines, its horny The periphery of the ring has irregular blunt denticles. The left wrist of the male is transformed into the genital wrist. The characteristic is that the base has 7 rows and 8 rows of suckers are normal, and the suckers in 9-15 columns suddenly become smaller, and the upward sucker is normal. . The contact cavity is slightly longer than the iliac crest, and the tassel is a half-moon ear, which is about one-fifth the length of the entire wrist. The sucker is small and dense, about 10 lines, similar in size. The body is yellowish-brown in life, with brownish-purple and milky-white speckles on its back, and golden-ish wavy stripes on the back of the male. However, irregular blue-green stripes appear in the reproductive season, and the abdomen changes from milky to white. Gold green, very bright. The inner shell is long and elliptical in shape, about 2.5 times longer than the width of the shell, convex on the back, with hard limestone-like projections, ventral calcareous softness, and a longitudinal groove in the center, with a horizontal pattern of horizontal stripes. The tip of the bone is stout.

3. Needle squid, body smaller squealer thin, back-end tapering, generally about 90mm, about 2 times the width, fin narrow, head length of about 12mm. Obvious male-female shape, male sacral elongated conical shape, wrist sequence of 2> 4> 1> 3, of which the second pair of wrist is about 2 times the length of other wrists, and extremely thick, round top, purple outside Ring pattern, 2/3 below the wrist sucker is 4 rows, the remainder is 2 rows; female cyst fat is short, wrist sequence is 2> 1> 4> 3, 2nd and 3rd wrist similar, the following 3/ The suction cups in the 5 places are 4 lines and the remainder is 2 lines. The first pair and the third pair of wrist suction cups were 4 rows, the top suction cup was 2 rows; the 4 pairs of wrist suckers of both sexes were 4 rows, the outer edge of the bisexual sucker keratinous ring, basically no teeth, but the small tip suction cup was slightly With small square teeth. The left wrist of the male is 4th and the top sucker is extremely small. Slender wrists, more than long, short-spike ear, about 1 / 10 of the length of the whole wrist, suction cups 7-8 lines, large and small, the central line 4 largest. There is a very fine yellow spot on the back of your life. The length of the male inner shell is 6 times the width; the length of the female inner shell is 4 times the width, the keratinous edge is very narrow, the back of the protrusion is very small, the middle has a longitudinal rib, and the end bone needle is sharp.

4. White-spotted squid, larger in size, zygomatic oval, generally about 300mm, about 1.8 times the width, the maximum width of the meat fin is less than 1/4 of the width of the palate, located on both sides, the entire edge, the end is separated, the wrist Sequence is 4> 3> 2> 1, sucker 4 lines, the base part of sucker horny ring outer edge with dense healing of blunt dentures; top part of the suction cup with separate small teeth. Her back is yellowish-brown with white spots. The inner shell is thick, long and oval, about 2.5 times longer than the width, the back of the particle is thick, the abdomen convex before the concave, a shallow groove in the middle of the transverse striation, the end of bone stout.

5. Tabby squid, larger in size, similar to white-spotted squid, the main difference is that the outer edge of sucker keratinous ring of this kind of wrist is smooth without teeth, but with many fine lines; the top suction cup has dense blunt small teeth. In life, the body is brownish brown, with brownish wavy markings on its back, and it looks like a tiger spot. At the junction of the inner fins and the back, a circle of sky blue borders surrounds it.

6. It is proposed that the squid has a larger body size and is similar to the white-spotted squid, and the difference is that the wrist sequence is 4>1>3>2. In life, the back is yellow-brown and has obvious white spots. The wrist is longer than the sum of the head length and length. The inner shell has a shorter cross-section.

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