Sympotthastia

{{Short description|Genus of flies}}

{{Italic title}}

{{Taxobox

| name = Sympotthastia

| regnum = Animalia

| phylum = Arthropoda

| classis = Insecta

| ordo = Diptera

| subordo = Nematocera

| infraordo = Culicomorpha

| superfamilia = Chironomoidea

| familia = Chironomidae

| subfamilia= Diamesinae

| tribus = Diamesini

| genus = Sympotthastia

| genus_authority = Pagast, 1947

| subdivision_ranks = Species

| subdivision = See text

}}

Sympotthastia is a genus of non-biting midges in the subfamily Diamesinae of the bloodworm family Chironomidae.