on ▁have ▁been ▁observed , ▁respectively . ▁S light ly ▁less ▁common ▁are ▁the ▁gener a ▁E pe orus , ▁H ex at oma , ▁Le uct ra , ▁and ▁Le pid ost oma . ▁Of ▁the ▁ 2 0 0 - ind ividual ▁sample , ▁ 1 5 , ▁ 1 3 , ▁ 1 1 , ▁and ▁ 1 0 ▁individuals ▁of ▁each ▁tax on ▁have ▁been ▁observed , ▁respectively . ▁Still ▁less ▁common ▁are ▁the ▁gener a ▁Ba et is , ▁Par ale pt oph le bia , ▁Ac r one uria , ▁St en on ema , ▁N ig ron ia , ▁Ag ap et us , ▁Do I oph il odes , ▁and ▁Opt ios erv us . ▁In ▁the ▁ 2 0 0 - ind ividual ▁sample , ▁ 8 , ▁ 6 , ▁ 5 , ▁ 4 , ▁ 4 , ▁ 3 , ▁ 2 , ▁and ▁ 2 ▁individuals ▁of ▁each ▁tax on ▁have ▁been ▁observed , ▁respectively . ▁Only ▁one ▁individual ▁each ▁of ▁the ▁gener a ▁I son ych ia , ▁Am ph in em ura , ▁Che um at ops y che , ▁R hy c oph ila , ▁Ne oph y lax , ▁Pse phen us , ▁Bo yer ia , ▁T aban us , ▁and ▁Camb arus ▁were ▁observed . ▁ ▁The ▁wet lands ▁at ▁the ▁head w aters ▁of ▁Spring ▁Brook ▁are ▁home ▁to ▁bore al ▁forest ▁trees . ▁These ▁include ▁black ▁spr uce , ▁paper ▁bir ch