Invertebrate PhotosInvertebrate Photos

Acoelomate

Pseudocoelomate

Coelomate

roundworm

flatworm

Leech

Tapeworm Scolex (head) with suckers and hooks

Tapeworm Segments Tapeworm Segments (proglottids)(proglottids)

TapewormTapeworm Uterine Uterine

branches branches in in proglottidproglottid

Tapeworms inside intestinesTapeworms inside intestines

Class Trematoda Class Trematoda - Flukes- Flukes

ClonorchisClonorchis sinensissinensis - liver fluke - liver fluke

Oral suckerOral sucker

PharynxPharynx

Intestines (cecum)Intestines (cecum)

UterusUterus

TestesTestes

ClonorchisClonorchis sinensissinensis -liver fluke -liver fluke

FasciolopsisFasciolopsis buskibuski giant intestinal flukegiant intestinal fluke

Blood FlukeBlood FlukeSchistosomaSchistosoma

Male

Female

Blood Fluke: SchistosomiaisBlood Fluke: Schistosomiais

Blood FlukeBlood FlukeSchistosomaSchistosomaSwimmer’s Swimmer’s

ItchItch

PlanariaPlanaria

Female

Pharynx

Eggs

Mouth

Ascaris lumbricoides - intestinal round worm- (plastimount)

MaleFemale

Necator americanus

Rays

Function is for copulation

This is when a dog or cat hookworm gets into a human by accident. Since we are not the right kind of host, the worm dies under the skin and causes an allergic reaction.

Trichinella spiralis- threadworm encysted in muscle

CystMuscleLarva

Larvae

Cyst

Muscle

Class Arachnia

Dermacentor spp.- tick

Head

Thorax

Abdomen

Legs

Class Arachnia

Sarcoptes scabiei - itch mite

Mouth

Legs

Bristles on rear legs

Bristles on abdomen

Class Arachnia

Dermatophagoides spp.- dust mite

Thorax

Legs

Abdomen

Flea

HeadThoraxAbdomenLegs

CLASS INSECTA

Pediculus humanis corporus - human body louse

AbdomenThoraxHeadAntennae (for feeling)EyesPlates (protection)Legs

CLASS INSECTA

HUMAN BODY LOUSE

CRAB LOUSE