Insect and Spider Identification: CLOSED: Seattle, Washington insect ID needed, 2 by gongura

gongura wrote:
A couple people have said this might be a flight-stage aphid. I am fairly certain it is a sap-sucking insect, given the mouthpiece (clearly seen by zooming in on the picture), but my main interest is because it attacks me. I am reacting strongly to the "bites", with extensive redness/heat and extreme itching. The reaction sets in about 24 hours after a "bite" and lasts 2-3 days.

Insect length is a little over 3mm, not including antennae or wings. I can't say for certain what plants the insect prefers, because I usually don't know I was bitten until the next day. Pure luck that I captured this beast as it was attacking me. The antennae and mouthpiece don't look like other images of flight-stage aphids I've seen, but there are so many species. Thank you for ID help!