Module 10 Ants, Bees, and Wasps Flashcards
ants, bees, and wasps taxonomy
order Hymenoptera
suborder Apocrita
family Apidae
honey bee and bumble bee
family Vespidae
wasps, hornets, and yellow jackets
family Formicidae
ants
hymenoptera anatomy
small to large
wings: hamuli - modified second pair of wings; hooks that connects other two wings together
abdomen: propodeum (fused with thorax), petiole (narrowed waist), faster (enlarged terminal segment)
ants social castes
queens: winged but lose wings after mating
males: winged, die after mating
workers: all female
hymenoptera development
holometabolous facultative arrhenotoky (Queen's choice): males develop from unfertilized eggs, females from fertilized number of queens vary: polygyny (multiple) and monogyny (single)
venom apparatus
venom gland: venom production
venom sac: venom storage
stinger/ovipositor: venom distribution (only in females)
types of hymenoptera venom
- small, nonproteinaceous molecules (
ant venom
function: defense, prey capture, aggregation, trail marking
components: mainly proteinaceous (except for fire ants), alkaloid component (solenopsin) causes blistering after sting
vespid (wasps) venom
function: cause pain, alarm pheromones
components: serotonin and kinins (cause pain), mastoparans (mast-cell degranulating peptides), and neurotoxins
honey bee venom
sting autonomy: “self severing,” fatal, recurved barbs leave female genitalia behind
components: phospholipase, hyaluronidase, melittin (ruptures RBC)
red imported fire ant
native species
Solenopsis geminata (Texas), S. xyloni, S. aurea
red imported fire ant
imported species
Solenopsis invicta (RIFA), S. richteri (BIFA)
importance of RIFA
highly invasive
community disruption
extreme damage to agriculture
millions of dollars spent annually in damage, treatment, and control