Female Mosquito Mouthparts Under the Microscope
Female Mosquito Mouthparts (Whole Mount), Culex
This slide shows the head and mouthparts of a female mosquito, mounted whole. Female mosquitoes have mouthparts built to pierce skin and drink blood, so this slide connects insect anatomy to disease spread.
This whole mount preparation exhibits the specialized piercing-sucking mouthparts of a female mosquito (family Culicidae). Key anatomical structures extending from the head capsule include the elongated labium, which acts as a protective sheath housing six delicate stylets: the labrum, hypopharynx, paired mandibles, and paired maxillae. Flanking the proboscis are slender, sparsely hair-bearing antennae characteristic of female mosquitoes (pilose antenna morphology, lacking the bushy plumose whorls of males) alongside segmented maxillary palps. Under brightfield illumination, the chitinous cuticular features, sensilla, and specialized structural adaptations required for hematophagy and skin penetration are clearly delineated.
What to look for
- Proboscis: A long, thin tube extending from the head.
- Labium: The outer sheath of the proboscis that holds the needle-like stylets inside.
- Stylets: Fine piercing parts inside the labium, which may show where the sheath is split or bent.
- Antennae: Thin antennae with short, sparse hairs, unlike the bushy antennae of males.
- Maxillary palps: Segmented feelers beside the proboscis.
At each magnification
Low power (about 4x)
The head with the long proboscis and antennae extending forward.
Medium power (about 10x)
The segments of the antennae and palps, and the sheath of the proboscis.
High power (about 40x)
Sensory hairs on the antennae and the fine stylets.
Questions and answers
How do you tell male and female mosquitoes apart under a microscope?
Look at the antennae. Female mosquitoes have thin antennae with sparse, short hairs, while males have bushy, feathery antennae. Only females have mouthparts that can pierce skin to feed on blood.
How does a mosquito bite work?
The labium folds back while needle-like stylets pierce the skin. Some stylets cut, one injects saliva that keeps blood from clotting, and another acts as a straw to suck blood.
Why do only female mosquitoes bite?
Female mosquitoes need protein from blood to make eggs. Males feed only on nectar and plant juices.
- Category
- Invertebrates
- Scan magnification
- 20x
- Tags
- female mosquito mouthparts, Culex, mosquito proboscis, piercing sucking mouthparts, insect mouthparts, Culicidae
Viewing this slide in class
This is a scan of a real prepared slide, not a simulation or a drawing. On StudyScope you can pan from the whole slide down to individual structures, always in focus, and measure them in real micrometers with the calibrated ruler. Present it live and every student screen follows your view and annotations. Students join with a room code on Chromebooks, iPads, or any browser, with no accounts.