Table 1 Collection locality, museum location of voucher specimen, museum catalog number, SRA project number, number of Illumina reads, number of Trinity contigs and number of HaMSTr ortholog groups represented for each of the thirty-seven transcriptomes generated in this study

Acanthodrilidae sp.

Argentina, Tierra del Fuego, Ushuaia (coll. E. Lapied)

NCSM 27264

181228

1140

Alma sp.

Almidae

Gabon, edge of Lac Vembo, Gamba complex, (coll. S James 18 May 2008)

NCSM 27265

110015

558

Avelona ligra

Lumbricidae

France, Jargeau, Loiret Department, (coll. M. Koken)

MNHN HEL593

182509

1173

Criodrilus lacuum

Criodrilidae

Hungary (coll. C. Csuzdi)

NCSM 27266

119084

934

Dendrobaena hortensis

Lumbricidae

Sweden, Södermanland, Vingåker, Valltrand, indoor compost, 59.0864 N, 16.0544 E (coll. E. Boräng, 1 Jan 2012)

SMNH 161291

in EtOH CE13942

179981

1180

Dichogaster sp. (green tree worm) Benhamiidae

Brazil, Amazonas, near Manaus, Reserva Campina (coll. S. James, S. Coral, 2 Feb 2012)

NCSM 27267

116065

1140

Dichogaster sp.

Benhamiidae

France, Guadeloupe, Basse Terre (colls. S. James, F. Gamiette Feb 2013)

NCSM 27268

106438

1152

Dichogaster saliens

Benhamiidae

France, Guadeloupe, Chutes Carbet, Basse Terre (colls. S. James, F. Gamiette Feb 2013)

NCSM 00000

98665

999

Drawida sp.

Moniligastridae

USA, Tonganoxie, Kansas (coll. S. James? May 2013)

NCSM 27269

159219

1081

Eisenia andrei

Lumbricidae

Unknown

---

137631

1217

Eisenia andrei

Lumbricidae

Sweden, Södermanland, Vingåker, Valltrand, indoor compost, 59.0864 N, 16.0544 E (coll. E. Boräng, 1 Jan 2012)

SMNH 161292

in EtOH CE13945

168836

1191

Eudrilus eugeniae

Eudrilidae

Brazil, Sao Paulo, bait shop (coll. S. James, 7 Nov 2010)

NCSM 27270

85990

1008

Fimoscolex sp.

Glossoscolecidae

Brazil, Assistencia, São Paulo, Fazenda Sta Rosa (coll. S. James, 9 Nov 2012)

NCSM 27271

95465

705

Gatesona chaetophora

Lumbricidae

France, Aveyron, L'Hospitalet du Larzac (coll. S James, 1 Mar 2011)

NCSM 27272

104334

961

Geogenia benhami

Microchaetidae

South Africa, Western Cape, Stellenbosch (colls S. James, D. Plisko, 27 Aug 2011)

NCSM 27273

84303

932

Glossodrilus sp.

Glossoscolecidae

Brazil, Amazonas, near Manaus, Reserva Ducke (colls. S. James, S. Coral 1 Feb 2012)

NCSM 27274

122993

1053

Glossoscolex sp.

Glossoscolecidae

Brazil, Parana, Campina Grande do Sul, Caratuva peak trail (coll. S. James, M. Bartz, 17 Oct 2010)

NCSM 27275

58411

722

Hemigastrodrilus monicae

Hormogastridae

France, Aveyron, L'Hospitalet du Larzac (coll. S James, 1 Mar 2011)

NCSM 27276

103338

1098

Hormogaster elisae

Hormogastridae

SRA PRJNA196484*,Spain, El Molar, 40°44′22.9″N, 3°33′53.1″W

---

459282

1234

Kerriona sp. Graciosa1

Ocnerodrilidae

Brazil, Parana, Graciosa Road (coll. S. James, 4 Nov 2010)

NCSM 27277

104982

1010

Komarekiona eatoni

Komarekionidae

USA, Sideling Hill Wildlife Mgmt. Area, Washington County, Maryland. (colls. S. James, M. Callaham, May 2013)

NCSM 27278

83743

1151

Kynotus pittarelli

Kynotidae

Madagascar, Antsirabe, 19°46'38.60"S 47°06'41.69"E

NCSM 00000

108836

1073

Lutodrilus multivesiculatus

Lutodrilidae

USA, Louisiana, Washington Parish (coll S. James, M. Callaham, M. Damoff, C. Erseus, 17 Jan 2011)

NCSM 00000

57341

1049

Maoridrilus wilkini

Acanthodrilidae

New Zealand, Kelly’s Creek (coll. T. Buckley)

NCSM 27279

80910

861

Microchaetidae sp.

South Africa, Western Cape, Tokai Swamp (colls. S. James and D. Plisko, 29 Aug 2011)

NCSM 27280

194638

1053

Microchaetus sp.

Microchaetidae

South Africa, Northern Cape, Niewwoudtville (colls. S. James, D. Plisko 5 Sep 2011)

NCSM 27281

125494

1093

Parachilota sp.

Acanthodrilidae

South Africa, Western Cape, Table Mountain (coll. James, Meassey, Plisko, 26 Aug 2011)

NCSM 27282

102971

1074

Place Kabary 2 sp.

Acanthodrilidae

Madagascar, Place Kabary, Antsiranana, 12°16'58.27''S 49°17'25.94''E

NCSM 00000

146018

1157

Pontodrilus litoralis

Megascolecidae

USA, Cedar Point, Alabama (colls. S. James, C. Erséus 17 January 2011)

NCSM 00000

90268

1189

Rhinodrilus priollii

Rhinodrilidae

Brazil, Amazonas, Reserve Ducke (colls. S. James, S. Coral, 3 Feb 2012)

NCSM 00000

87158

1102

Scherotheca savignyi

Lumbricidae

France, Midi-Pyrénées, Ariège, Malegoude (coll. S. James, 2 Mar 2011)

NCSM 27283

113157

1041

Sparganophilus sp.

Sparganophilidae

USA, Iowa, Des Moines River, at Douds (coll. S. James 12 May 2012)

NCSM 27284

123905

1199

Urobenus brasiliensis

Rhinodrilidae

Brazil, Rio Grande do Sul, Santo Cristo (coll. G. Steffen 09 Sep 2009)

NCSM 27285

55709

890

Vignysa popi

Hormogastridae

France, Aveyron, Montpellier (colls. S. James, M. Bouche, 1 Mar 2011)

NCSM 27286

93260

779

Delaya leruthi

Haplotaxidae

France, Midi-Pyrénées, Ariège, Cazavet, L'Estelas Cave, in water, 43.000 N, 1.010 E (coll. M.C. des Chatelliers, P. Martin & N. Giani, 24 May 2011) (topotype)

SMNH 161293

in EtOH CE13924

118020

1067

Pelodrilus sp.

Haplotaxidae

Western Australia, 25.5 km S of Busselton, Rapids Conservation Park, Margaret River (coll. C. Erséus, 16 Sep 2012)

WAM V9004

100864

1129

Haplotaxis gordioides

Haplotaxidae

Sweden, Västergötland, Göteborg, seeping groundwater at Göteborg Botanical Garden (Vitsippsdalen), 57.6813 N, 11.9562 E (C. Erséus & A. Achurra, 29 Mar 2011)

SMNH 161294 in EtOH CE11200

53878

855

?Haplotaxidae sp.

Brazil, Amazonas, Reserva Ducke (colls. S. James, S. Coral, 3 Feb 2012) (topotype)

NCSM 000000 in EtOH CE14372

93548

1053

Lumbriculus variegatus

Lumbriculidae

Sweden, Västergötland, Göteborg, Guldheden, spring S of Dr Fries Torg, 57.6827 N, 11.9707 E (coll. M. Svensson, 8 Nov 2011)

SMNH 161295 slide CE13679

109949

985

Propappus volki Propappidae

Sweden, Blekinge, Ronneby, Väby, Bräkneån River, sand in rapids, 56.1792 N, 15.1052 E (C. Erséus, B. Williams & S. Martinsson, 31 May 2013) (topotype)

SMNH 161296 slide CE18375

131574

1140