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(Resolved) What Morphological Characteristics Does The Human Flea Have?

A nidicolous, or ectoparasite of the nidicolous species P. Irritans can be found eating on hosts when it is hungry. The hosts of this species are typically mammals. They are mostly larger carnivores than humans. P. Irritans may be found within human houses or nests of other host animals when they are not eating. The distribution of this species is diverse, and it can be found in many different places depending on where they are located. If the host is not nearby, eggs, larvae, and pupae can be found within the habitat. Eggs almost always fall off the host, so pupae are also found in the host’s habitat. (Buckland, Sadler, 1989; Roberts, Janovy and Theobald 2009; Theobald in 1892) [1]
Ctenocephalides felis, like all fleas is laterally compacted and wingless. The length of cat fleas is approximately 2 mm and they are reddish-brown or black in colourr However, the males have slightly longer legs and are slightly larger than the females. Apart from the small differences in colorand size, males have complex and snail-shaped reproductive organs. Ctenocephalides felis stands out from other fleas because of its distinctive ctenidia (combs). It has a pronotal, and a more complex genal Ctenidium. Ctenocephalides mayis is the same morphology as that of dogs fleas. However, cats fleas exhibit a distinctively sloping forehead. Aside from its lack of an outer, apical tooth, the hind-tibia fleas are also unique. The members of Siphonaptera all have strong muscles that contain resilin in their legs. This allows them to jump up to 33 cm. Emily Brown, Surat Thani (Thailand) on February 14, 2020. [2]
Numerous flea species can feed on human beings. Pulex irritans is a less common flea that can be found in urban areas. While this isn’t a vector of disease, the species can act as an intermediate host for Hymenolepis pana and Dipylidium caninum. Ctenocephalides felis, a cat- and dog flea that feeds on humans (Ctenocephalides Canis and C. Felis), may also be present. C. Felis is a host for Cestodes and can also be a vector for Bartonella felis (cat scratch disease) or Rickettsia felis (“feline rickettsiae”). The primary vector of Yersinia Pestis (plague) is the Oriental rat flea, Xenopsylla cheopis. Sticktight fleas (Echidnophaga gallinacea) may feed on people who have close contact with birds. This article focuses on the chigo flea, Tunga penetrans. [3]
Link.springer.com Soulsby 1982 further states that the flea is dark in colorand wingsless. It also has a slightly compressed, chitineous abdomen. Its glossy body makes it easy to move through feathers and hair (Urquhart and al. 1987). Although compound eyes are not common, some species do have simple or large eyes. Soulsby 1982 states that legs can be used for jumping because they are strong and long. You can see this in particular the longer third leg (Urquhart, et. Al. 1987) is muscular. In some species there are a number of large spines on the head and the thorax known as ‘combs’ or ctenidia. A genal and pronotal (or cheek) combs may exist (Soulsby, 1982). These combs (or ctenidia) belong to the’s having chateotaxy set of characteristics that morphological taxonomy uses for identification of fleas. Structures of the male segment IX (the thoracic and leg structures) female sternite VII and the sperm holding organ (spermatheca) are the other two characterizing sets (Ménier and Beaucournu 1998). (Edited by Naveed Barosa, October 21, 2020). [4]
Mdedge.com also mentions how the adult human flea is a small, reddish brown, laterally compressed, wingless insect that is approximately 2- to 3.5-mm long (females, 2.5–3.5 mm; males, 2–2.5 mm) and enclosed by a tough cuticle. P. Irritans is smaller than the Ctenocephalides felis and dog fleas (Ctenocephalides canis). Fleas possess powerful hind legs that enable them to jump vertically and horizontally at 200 feet (compared to Ctenocephalides felis, the dog flea), or to climb up to 600 feet from the ground. The flea’s mouthparts are highly specialized for piercing the skin and sucking its blood meal via direct capillary cannulation. This was last updated 16 days earlier by Edvardo Heck, Longhai China. [5]

Refer to the Article

  1. https://animaldiversity.org/accounts/Pulex_irritans/
  2. https://animaldiversity.org/accounts/Ctenocephalides_felis/
  3. https://www.cdc.gov/dpdx/fleas/index.html
  4. https://link.springer.com/content/pdf/10.1007/978-3-642-56609-7_2.pdf
  5. https://www.mdedge.com/dermatology/article/231222/infectious-diseases/whats-eating-you-human-flea-pulex-irritans
Mehreen Alberts

Written by Mehreen Alberts

I'm a creative writer who has found the love of writing once more. I've been writing since I was five years old and it's what I want to do for the rest of my life. From topics that are close to my heart to everything else imaginable!

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