Phenology Table for Family Perlidae (Perlid stoneflies)

Numbers of Specimens Sampled Per Month at Each of Four Elevation Ranges
Meters Elev Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Elev Total
1 to 499m 0 0 0 0 24 30 51 16 44 0 0 4 169
500 to 999m 12 2 2 8 14 201 227 144 112 12 3 18 755
1000 to 1499m 0 0 0 0 0 70 106 31 13 0 4 3 227
1500m or more 0 0 0 0 1 0 0 0 0 0 0 0 1
Totals >>> 13 2 2 8 97 389 408 199 201 18 8 25 1,370

 

 

 

 

* Note: numbers of data records without elevations are included in the totals row.