Molecular Phylogeny and Systematics of Native North American Lumbricid Earthworms (Clitellata: Megadrili)

<p><i>B</i>. <i>palustris</i>, A = ventrolateral view of the clitellar region, Spt = spermatophore, Mp = male pore. B = Enlarged view of the male pore with falciform spermathophores.</p

<i>B</i>. <i>schwerti</i> sp. nov. (Jug Bay paratype).

<p>Ventral view of the clitellar region with a flat spermatophore above the male pore.</p

Longitudinal musculature of <i>B</i>. <i>palustris</i> (cross section).

<p>Longitudinal musculature of <i>B</i>. <i>palustris</i> (cross section).</p

Setal ratios in the genus <i>Bimastos</i>.

<p>Letters ab, bc, cd refers to setal intervals.</p

Calciferoous glands in the genera <i>Bimastos</i> and <i>Healyella</i> (longitudinal sections).

<p>A = <i>Bimastos schwerti</i> sp. nov., B = <i>Healyella syriaca</i> (Rosa, 1893), C = <i>Bimastos eiseni</i> (Levinsen, 1884), C = <i>Bimastos rubidus</i> (Savign, 1826). Numbers 10 and 11 refer to segments. Arrows point to diverticula.</p

Longitudinal musculature of <i>B</i>. <i>eiseni</i> (cross section).

<p>Longitudinal musculature of <i>B</i>. <i>eiseni</i> (cross section).</p

A live specimen of <i>B</i>. <i>schwerti</i> sp. nov. collected from Siddonsburg, dorsal view.

<p>A live specimen of <i>B</i>. <i>schwerti</i> sp. nov. collected from Siddonsburg, dorsal view.</p

Morphological comparison among the genera <i>Bimastos</i>, <i>Spermophorodrilus</i> and <i>Healyella</i>.

<p>Characters distinguishing one genus from the other two are in boldface.</p

<i>B</i>. <i>longicinctus</i>, ventral view of the clitellar region.

<p>mp = male pore, numbers refer to segment numbers, arrow point to a spermatophore.</p