39–0.47 in) in length and 0.36 mm (0.01 in) in width. Males have a copulatory bursa , which consists of spine-like spicules positioned on three muscular...

females are often longer and stouter. Males also have a prominent copulatory bursa posteriorly. N. americanus is generally smaller than A. duodenale,...

containing broad-headed land planarians with simple copulatory organs, without accessory ducts or copulatory bursa, and with a fold of tissue separating the male...

in the depths of the buccal capsule. Males are 8–11 mm long with a copulatory bursa at the posterior end. Females are 10–13 mm long, with the vulva located...

Tail of adult male of A. cantonensis, showing copulatory bursa and long spicules (arrows), scale bar is 85 μm...

(3⁄8–13⁄16 in) long, and displays the distinct feature of a well-developed copulatory bursa, containing an asymmetrical dorsal lobe and a Y-shaped dorsal ray....

characterized by a reduced buccal capsule and square head, and well-developed copulatory bursa in the male. The genital cone ventrally bears two small slender papillae...

leading to a fully developed gastrointestinal tract. Males have a small copulatory bursa at the posterior. Females have a "barber pole" shape down the middle...

distinguished from females based on the presence of a prominent posterior copulatory bursa. N. americanus is very similar in morphology to A. duodenale. N. americanus...

two broad lateral lobes and a smaller dorsal lobe with rays on the copulatory bursa. These bursal rays' aids in distinguishing the different species of...

to the bursa copulatrix. During copulation, the copulatory piece and the vaginal appendix are the structures that are actually coupled. The bursa copulatrix...

posterior end, while males have a feathery posterior end owing to their copulatory bursa. Hookworm species are not easily distinguished from the gross appearance...

cell. All freshwater planarians have an accessory organ called copulatory bursa or bursa copulatrix, which is connected to the genital atrium by a canal...

short penis papilla, short genito-intestinal duct, and a lack of a copulatory bursa. M. robusta can reach up to 50 mm long and is around 2–3 mm wide. The...

range of 6–16.6 mm. Males can be distinguished by their bell-like copulatory bursa, located in the tail, and their paired rodlike spicules. Eggs are ovular...

an extremely thick muscle coat surrounding the genital atrium. The copulatory bursa it relatively small when compared to other genera of freshwater planarians...

euphallics = male copulatory organs have developed as usual hemiphallics = male copulatory organs are reduced aphallics = no male copulatory organs develop...

planarians, which usually have them close to the brain. The copulatory apparatus has a copulatory bursa in most species, although in some it is absent and is...

with the tegumen is a unique diagnostic character. In the female, the copulatory bursa is adorned with two sclerotized elements (the signa bursae) – one of...

the copulatory apparatus. The male copulatory apparatus has a large seminal vesicle and a penis papilla, while the female organ has a seminal bursa (or...

are longer, ranging from lengths of 10 to 30 cm. Males also have copulatory bursas, used to hold on to the female during copulation and cement glands...

the copulatory apparatus having a large seminal bursa (or bursa copulatrix) connected to the vagina by a canal, called Beauchamp's canal. This bursa also...

have testes that are between 2.20 and 3.00 mm by 0.50 to 0.80 mm, copulatory bursas used to hold on to the female during copulation, and eight cement...

male sample had two spherical testes, 216 × 272 µm in diameter. The copulatory bursa was 80 by 140 µm. The cement glands were indistinct. The eggs measured...

forming a ring zone. The copulatory apparatus has a well-developed conical penis papilla and the female atrium lacks a seminal bursa, having only the female...

musculature and strong parenchymal musculature forming a ring zone. The copulatory apparatus has a well-developed conical penis papilla and two female ducts...

0.CO;2. S2CID 5717257. Arnqvist, G.; I. Danielsson (1999). "Copulatory Behavior, Genital Morphology, and Male Fertilization Success in Water...

back of the ears project beyond the tip as a definite tuft. The anterior bursa flap of the ears is more widely and less deeply emarginate. The tail is...

male copulatory apparatus is often complicated and has a well-developed penis. The female apparatus is very variable, with or without a seminal bursa and...

recipient's reproductive system: the bursa copulatrix (sperm digestion organ) becomes closed off, and the copulatory canal (leading to the sperm storage)...