Argilophilini

Belongs within: Megascolecidae.

The Argilophilini are a North American assemblage of earthworms with a strong gizzard and tubular nephridia. Most genera are holonephric, with a single pair of nephridia per segment, but Driloleirus is meronephric, with multiple pairs of nephridia per segment (Fender & McKey-Fender 1990).

Characters (Fender & McKey-Fender 1990): Circular in cross section. Setae in eight regular rows. Clitellum including at least segments xiv–xviii. Nephropores arrayed in two or more poorly to strictly defined levels, arrangement varying from totally random to very regular or in several regular longitudinal rows. Septa all present from 4/5, strengthened in anterior esophageal region. Gizzard single, strong, in v, v and vi, vi, or vi and vii but derived from segment v. Typhlosole present. Intestine origin behind xv, before xx. Supraintestinal glands absent. Calciferous glands, if present, sessile. Nephridia tubular, unbranched though sometimes fused, holonephric or meronephric throughout, with single pair of stomate nephridia adjacent to nerve cord in all segments behind xv. Funnels functional in rectal region, usually nonfunctional anterior to rectal region. Exonephric or rarely with buccal enteronephry. Seminal vesicles postseptal in xi and xii or xi only. Prostates tubular, one pair in xviii. Vasa deferentia join prostate at juncture of duct and gland. Dorsal vessel single. Ventral vessel unbranched in “heart” segments [x–xii(xiii)]. No subneural or lateral neural vessels, their place taken by lateral parietal connections of trunks. Lateroesophageal “hearts” in x–xii(xiii).

<==ArgilophiliniFM-F90
    |--Kincaidodrilus McKey-Fender 1982FM-F90
    |    `--*K. kincaidii (Altman 1936) [=Plutellus kincaidii]FM-F90
    |--Drilochaera Fender & McKey-Fender 1990FM-F90
    |    `--*D. chenowithensis (McKey-Fender 1970) [=Plutellus chenowithensis]FM-F90
    |--Arctiostrotus McKey-Fender 1982FM-F90
    |    |--*A. perrieri (Benham 1892) [=Plutellus perrieri]FM-F90
    |    `--A. altmani (Gates 1942) [=Plutellus altmani]FM-F90
    |--Macnabodrilus Fender & McKey-Fender 1990FM-F90
    |    |--*M. macnabi (McKey-Fender 1957) [=Plutellus macnabi]FM-F90
    |    `--M. hopsonae (McKey-Fender 1970) [=Plutellus hopsonae]FM-F90
    |--Nephrallaxis Fender & McKey-Fender 1990FM-F90
    |    |--*N. davisi (Macnab & McKey-Fender 1953) [=Plutellus davisi]FM-F90
    |    `--N. blacki (Macnab & McKey-Fender 1953) [=Plutellus blacki]FM-F90
    |--Chetcodrilus Fender & McKey-Fender 1990FM-F90
    |    |--*C. umbellulariae (Macnab & McKey-Fender 1958) [=Plutellus umbellulariae]FM-F90
    |    |--C. exutus (Macnab & McKey-Fender 1958) [=Plutellus exutus]FM-F90
    |    `--C. fenderi (Macnab & McKey-Fender 1958) [=Plutellus fenderi]FM-F90
    |--Driloleirus Fender & McKey-Fender 1990FM-F90
    |    |--*D. americanus (Smith 1897) [=Megascolides americanus]FM-F90
    |    |--D. cascadensis (Smith 1937) [=Megascolides cascadensis]FM-F90
    |    |--D. eiseni (Smith 1937) [=Megascolides eiseni]FM-F90
    |    |--D. macelfreshi (Smith 1937) [=Megascolides macelfreshi]FM-F90
    |    |--D. michaelseni (Smith 1937)FM-F90
    |    `--D. wellsi (Altman 1936) [=Megascolides wellsi]FM-F90
    |--Toutellus Fender & McKey-Fender 1990FM-F90
    |    |--*T. toutellus (Altman 1936) [=Plutellus toutellus]FM-F90
    |    |--T. adecus (Macnab & McKey-Fender 1959) [=Plutellus adecus]FM-F90
    |    |--T. hyoiedes (Macnab & McKey-Fender 1959) [=Plutellus hyoiedes]FM-F90
    |    `--T. oregonensis (Smith 1937) [=Plutellus oregonensis]FM-F90
    |         |--T. o. oregonensisFM-F90
    |         `--T. o. swiftae (Smith 1937) [=Plutellus oregonensis swiftae]FM-F90
    `--Argilophilus Eisen 1893FM-F90
         |--A. marmoratus Eisen 1893FM-F90 [=Plutellus marmoratusM07]
         |    |--A. m. marmoratusB07
         |    `--*A. m. ornatus Eisen 1893B07
         |--A. collinus Eisen 1900FM-F90
         |--A. garloughi (Smith 1937) [=Plutellus garloughi]FM-F90
         |--A. hammondi (McKey-Fender 1970) [=Plutellus hammondi]FM-F90
         |--A. panulirus (Macnab & McKey-Fender 1959) [=Plutellus panulirus]FM-F90
         |--A. papillifer Eisen 1893FM-F90
         `--A. sierrae (Michaelsen 1921) [=Plutellus sierrae]FM-F90

*Type species of generic name indicated

References

[B07] Blakemore, R. J. 2007. Origin and means of dispersal of cosmopolitan Pontodrilus litoralis (Oligochaeta: Megascolecidae). European Journal of Soil Biology 43: S3–S8.

[FM-F90] Fender, W. M., & D. McKey-Fender. 1990. Oligochaeta: Megascolecidae and other earhworms from western North America. In: Dindal, D. L. (ed.) Soil Biology Guide pp. 357–378. John Wiley & Sones: New York.

[M07] Michaelsen, W. 1907. Oligochaeta. Die Fauna Südwest-Australiens 1 (2): 115–232, 2 pls.