Skip to main content

#60: Cockroaches

Litinsects #60: Cockroaches

Cockroaches belong to the order BLATTODEA, which is derived from the Greek word “blatta” meaning cockroach. Did you know that the Blattodea contains cockroaches AND termites? That’s right; termites are actually considered a specialized group of cockroaches! They used to be classified in an entirely different order of insects but recent genetic studies found a closer relation to cockroaches than previously thought.


-Roaches are characterized by their broad, flat bodies. They have long antennae and generalized chewing mouthparts. In contrast to many other insects, which have 3, cockroaches have only 2 ocelli (or simple eyes)

-Most people consider roaches to be disgusting, disease-spreading pests. But of 4,500 species, only 30 live in human habitats and are considered pests

-The common name is derived from the Spanish word for the insect, “cucaracha”

-Cockroaches can be found in a wide variety of habitats around the world. Many live in the tropics but also in temperate and even Arctic regions!

-Some species exhibit parental care, which is only found in 1% in all insect species! Some cockroaches form family groups where parents defend young and feed them regurgitated food, sometimes for years until they reach adulthood!

And now the weirdest fun fact: One species, the pacific beetle cockroach, is VIVIPAROUS (giving birth to live young). Females secrete extremely nutritious “milk” to feed the offspring developing inside them. Believe it or not, this cockroach milk is considered by some to be the next superfood. However, it is extremely labor intensive to obtain and millions of roaches would have to be killed to get enough for commercial use.

What do you think, would you ever try cockroach milk?

Labels:

Comments

Post a Comment

Popular posts from this blog

#4: Simple Eyes

Litinsects #4: Simple Eyes Yesterday I talked about compound eyes, the multi-faceted structures that most insects use to see the world 👀 But insects actually have another visual system as well, composed of simple eyes or OCELLI. Unlike compound eyes, ocelli are composed of only one structure which makes them comparatively “simple” although they are still very important. These are light-detecting organs consisting of a single lens with sensory cells. They can detect movement but don’t form complex images. “Ocellus” comes from the Latin word oculus, meaning eye. So these structures are literally “little eyes” Ocelli are located on the insect’s head, usually between or adjacent to the compound eyes. They are usually dome-shaped, somewhat shiny structures In most flying insects (such as flies, dragonflies, bees, etc.) there tend to be three ocelli in a triangle arrangement (see photo). Some terrestrial insects (like cockroaches) have only two ocelli ...
Post a Comment
Read more

#13: Insect Legs

Litinsects #13: Insect Legs Insect legs can be as diverse as the animals themselves. Some are long and slender like a crane fly’s, some are short and hefty like a mole cricket’s. But what all insects share is the number and layout of those legs. Hexapods have 6 LEGS, a pair each of fore, mid, and hind legs that are made up of the same basic units. Starting closest to the body, they are:  (1) the coxa, which attaches the leg to the thorax  (2) the trochanter (3) the femur, which is oft en the thickest segment  (4) the tibia, often covered in tiny hairs (5) the tarsus, which contains 5 “pseudo-segments”  (6) the pretarsal claws, of which most insects have 2 on each leg The basic units of the leg always occur in this order but may be reduced or highly modified in some species to fit certain tasks such as running, digging, swimming, grasping, or jumping. This photo sums it up perfectly: from < https://wiki.bugwood.org/File:Insect...
Post a Comment
Read more

#51: Mayflies

Litinsects #51: Mayflies Mayflies are aquatic freshwater insects and belong to one of the most primitive winged insect lineages! First off, what’s in a name? Mayflies’ common name comes from the fact that some species start “hatching” from the water in May. But their scientific name is much more interesting and accurate; this order is named EPHEMEROPTERA from the Greek “ephemera” for “lasting one day / temporary” and “pteron” for “wing”. A more fitting name would be dayfly, considering their adult lifespan... Most live less than 24 hours after emerging, the shortest adult lifespan of any insect! -Mayflies have triangular-shaped wings that are held upright over their bodies when at rest (sort of like a butterfly) and have three long tail-like filaments. These characteristics, both of which make them easily recognizable, are probably traits that were present in the most primitive flying insects -They are HEMIMETABOLOUS insects, meaning they go through incomplete metamorphosis, with multi...
Post a Comment
Read more