Draculoides mckechnieorum Abrams and Harvey, 2020

Abrams, Kym M., Huey, Joel A., Hillyer, Mia J., Didham, Raphael K. & Harvey, Mark S., 2020, A systematic revision of Draculoides (Schizomida: Hubbardiidae) of the Pilbara, Western Australia, Part I: the Western Pilbara, Zootaxa 4864 (1), pp. 1-75 : 54-59

publication ID

https://doi.org/10.11646/zootaxa.4864.1.1

publication LSID

lsid:zoobank.org:pub:A5F51A7F-83DA-4C77-A85C-0FCF8A400CF2

DOI

http://doi.org/10.5281/zenodo.4428365

persistent identifier

https://treatment.plazi.org/id/5DF89D2B-D0B0-4348-B574-2A26E2082B78

taxon LSID

lsid:zoobank.org:act:5DF89D2B-D0B0-4348-B574-2A26E2082B78

treatment provided by

Plazi

scientific name

Draculoides mckechnieorum Abrams and Harvey
status

n. sp.

Draculoides mckechnieorum Abrams and Harvey   , n. sp.

( Figs. 1–8 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 , 29–31 View FIGURE 29 View FIGURE 30 View FIGURE 31 )

Zoobank Code: http://zoobank.org/NomenclaturalActs/ 5DF89D2B-D0B0-4348-B574-2A26E2082B78

Paradraculoides SCH   050: Abrams et al. 2019 MPE 106532: 8, fig. 2.

Material examined. Holotype male. AUSTRALIA: Western Australia: Western Australia: Mesa L, Robe Valley , ca. 5 km SSW. of Pannawonica, 21°41’7.5”S, 116°18’27.18”E, 6 August –1 October 2015, troglofauna trap, J. Al- GoogleMaps  

exander (Biota Environmental Sciences, MELUNK09-20151001 -TI-01) ( WAM T138561 ) (DNA: COI, ITS 2, 18S, 12S, 28S). GoogleMaps  

Paratypes. AUSTRALIA: Western Australia: 1 ♀, Mesa L, Robe Valley, ca. 6 km SSW. of Pannawonica , 21°41’14.04”S, 116°18’25.23”E, 6 August-1 October 2015, troglofauna trap, J. Alexander (Biota Environmental Sciences, MELUNK06-20151001 - T2-01 ) ( WAM T138558 ) (DNA: COI, ITS 2, 18S, 12S, 28S) GoogleMaps   ; 1 ♀, Mesa L, Robe Valley, ca. 6 km SSW. of Pannawonica , 21°41’09.26”S, 116°18’21.88”E, 6 June–10 August 2015, troglofauna trap, J. Alexander (Biota Environmental Sciences, MELUnk11-20150808- T1-01 ) ( WAM T139917 ) GoogleMaps   .

Other material. AUSTRALIA: Western Australia: 1 juvenile Mesa M, Robe Valley , ca. 4 km S Pannawonica, 21°40’29.9”S, 116°19’11.45”E, 06 June–08 August 2015 GoogleMaps   , troglofauna trap, J. Alexander ( Biota Environmental Sciences , DD14MEM0001-20150808- T2-03 ) ( WAM T138482 )   ; 1 juvenile, Mesa M, Robe Valley , ca. 4 km S Pannawonica, 21°40’29.9”S, 116°19’11.45”E, 06 June–08 August 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, DD14MEM0001-20150808- T2-03 ) ( WAM T138483 ) (DNA: COI, ITS 2, 18S)   ; 1 juvenile, Mesa N, Robe Valley ca. 4 km S. Pannawonica , 21°40’29.4”S, 116°19’30.59”E, 06 June–08 August 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, RC13MEN0005-20150808- T1-01 ) ( WAM T138515 ) (DNA: COI, ITS 2, 18S)   ; 1 juvenile, Mesa N, Robe Valley ca. 6 km SSW Pannawonica, 21°41’14.04”S, 116°18’25.23”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, MELUNK06-20151001 - T2- 01 ) ( WAM T138559 ) (DNA: COI, ITS 2, 18S, 12S, 28S)   ; 1 juvenile, Mesa L, Robe Valley ca. 5 km SSW Pannawonica, 21°41’7.5”S, 116°18’27.18”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, MELUNK09-20151001 -TI-01) ( WAM T138562 ) (DNA: COI, ITS 2, 18S, 28S)   ; 1 juvenile, Mesa L, Robe Valley ca. 7 km SSW Pannawonica, 21°41’47.25”S, 116°17’20.18”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, DD14 MEL0001-20151001 View Materials - T2-01 ) ( WAM T138555 ) (DNA: COI, ITS 2, 18S, 12S, 28S)   ; 1 juvenile, Mesa L, Robe Valley ca. 6 km SSW Pannawonica, 21°41’30.13”S, 116°17’52.16”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, MELUNK02-20151001 - T2- 01 ) ( WAM T138556 ) (DNA: COI, ITS 2, 18S, 12S, 28S)   ; 1 juvenile, Mesa L, Robe Valley ca. 5 km SSW Pannawonica, 21°40’59.51”S, 116°18’35.86”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, MELUNK07-20151001 - T2-01 ) ( WAM T138560 ) (DNA: COI, ITS 2, 18S, 12S, 28S)   ; 1 juvenile, Mesa L, Robe Valley ca. 5 km SSW Pannawonica, 21°40’51.35”S, 116°18’42.86”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, MELUNK10-20151001 - T1-01 ) ( WAM T138563 ) (DNA: COI, ITS 2, 18S, 12S, 28S)   ; 1 juvenile, Mesa L, Robe Valley ca. 5 km SSW Pannawonica, 21°40’51.35”S, 116°18’42.86”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexander (Biota Environmental Sciences, ME- LUNK10-20151001 - T2-01 ) ( WAM T138564 ) (DNA: COI, ITS 2, 18S, 12S, 28S)   ; 1 juvenile, Mesa L, Robe Valley ca. 6 km SSW Pannawonica, 21°41’9.26”S, 116°18’21.88”E, 08 June–1 October 2015 GoogleMaps   , troglofauna trap, J. Alexan- der (Biota Environmental Sciences, MELUNK11-20151001 - T1-01 ) ( WAM T138568 ) (DNA: COI, ITS 2, 18S, 12S, 28S)   ; 1 juvenile, Mesa N, Robe Valley ca. 4 km S. of Pannawonica , 21°40’29.40”S, 116°19’30.59”E, 06 June–08 August 2015 GoogleMaps   , troglofauna trap, J. Alexander ( Biota Environmental Sciences , RC13MEN0005-20150808- T1-01 B)   ( WAM T 139920).

Diagnosis. The shape of the male flagellum of Draculoides mckechnieorum   most closely resembles D. affinis   , D. bythius   , D. cochranus   , D. eremius   , D. kryptus   and D. warramboo   especially in the presence of a broad base. It differs from D. affinis   in the tapering of the distal end of the flagellum (blunt and rounded in D. affinis   ) and the position of vl2 which is close to the distal margin of the flagellum in D. mckechnieorum   and sub-distal in D. affinis   . It differs from D. cochranus   by the posterior position of dm4 (sub-distal in P. cochranus   ), from D. bythius   and D. kryptus   in the close proximity of vl1 and dl1 such that dl1 is anterior to vm5 (dl1 is posterior to vm 5 in D. bythius   and D. kryptus   ), from D. eremius   by the raised antero-dorsal region of the flagellum, which is flat in D. eremius   and from D. warramboo   in the elongated end of the flagellum, which is shorter and broader in D. warramboo   . Females differ from all other species of Draculoides   by the comparatively densely plicate lower half of the spermathecae of the genitalia. Draculoides mckechnieorum   can be diagnosed from all other Draculoides   species that were sequenced at COI and 12S by the 50bp mini-barcodes shown in Figures 3 View FIGURE 3 and 5 View FIGURE 5 . Draculoides mckechnieorum   can be diagnosed from all other Draculoides   species that were sequenced at ITS2 ( Fig. 7 View FIGURE 7 ) except for D. anachoretus   , D. bythius   , D. eremius   , D. gnophicola   , D. kryptus   , D. warramboo   , D. immortalis   , D. belalugosii   , D. christopherleei   , D. piscivultus   and D. akashae   , which are not distinguishable using the ITS2 mini-barcode.

Description (adults). Colour. Yellow-brown; propeltidium somewhat darker.

Cephalothorax. Propeltidium with 2+1 apical setae in a triangular formation on anterior process and 2 + 2 + 2 setae; eye spots absent. Mesopeltidia separated. Metapeltidium divided. Anterior sternum with 15 (♂), 12 (♀) setae (including 2 sternapophysial setae); posterior sternum triangular with 6 setae.

Chelicera. Fixed finger with 2 large teeth plus 5 (♂), (♀) smaller teeth between these; membranous area be- tween fixed and movable fingers with 3 large, lanceolate, terminally pilose setae (G1); G2 composed of 11 (♂), 6 (♀) setae; G3 composed of 4 (♂), 6 (♀) setae; internal face of chelicera with 5 (♂), 4 (♀) short whip-like setae (G4); brush at base of fixed finger composed of 8 (♂), 6 (♀) setae (G5A), each densely pilose in distal half and G5B composed of 7 (♂), 10 (♀) setae; G6 with one seta; G7 composed of 3 (♂), 5 (♀) setae. Movable finger ser- rula composed of 18 (♂), 19 (♀) long lamellae, blunt guard tooth present subdistally; 1 accessory tooth present at two-thirds from base of serrula.

Pedipalp. Without apophyses; trochanter with sharply produced ventro-distal extension, ventral margin with ca. 8 stout setae, without mesal spur; tarsus and tibia without spines; tarsal spur present; claw 0.39 (♂), 0.4 (♀) × length of tarsus.

Legs. Tarsus I with 6 segments; baso-dorsal margin of femur IV produced at about a 90° angle.

Abdomen. Chaetotaxy of tergite I: 2 macrosetae + 4 microsetae (microsetae diagonal), tergite II: 3 macrosetae + 6 microsetae (microsetae in column), tergites III–IX: 2: 2: 2: 2: 2: 2: 3; segment XII with small dorsal process (♂ only).

Female genitalia. Two pairs of spermathecae with equal-sized lobes, with numerous folds in lower third of stalk, each pair connected basally before connection with bursa ( Fig. 31G View FIGURE 31 ), distally round; sparsely covered with small pores; gonopod short, roughly triangular, distally slightly bifurcate.

Flagellum. Male: Dorsoventrally compressed ( Figs. 29 View FIGURE 29 D–F, 31A–C); 2.1 × longer than broad; seta dm1 situated dorso-medially, slightly closer to anterior margin; seta dm4 situated close to posterior margin; dl1 between dl3 and vl1; dl3 on posterior margin; vm2 situated slightly below vm1; vm5 situated on approximately same level as dl1, closer to vl2 than to vm3; 1 pair of microsetae near anterior end, and three pairs between vl1 and dl3. Female: 4.5 × longer than broad ( Figs. 30 View FIGURE 30 D–F, 31D–F); seta dm1 situated towards posterior end of second flagellomere, slightly more posterior than vm2; setae dl1 tiny, situated posterior to vl1, dm4 situated subdistally, equidistant between dl1 and dl3 (absent in WAMT138558); dl3 situated almost at posterior margin marginally more posterior than vl2, vm1 situated slightly more posterior than vm2, vm3 situated closer to vm1 than to vm5, vm5 halfway between vm3 and vl2, vl1 situated posterior to vm3 and anterior to dl1; 1 pair of microsetae baso-laterally on flagellomere III, ca. 2 pairs of microsetae anterior to dl3.

Dimensions (mm). Holotype male (WAM T138561): Body length 3.94. Propeltidium 1.15/0.67. Chelicera 0.83. Flagellum 0.4/0.19. Pedipalp: trochanter 0.56, femur 0.54, patella 0.63, tibia 0.56, tarsus 0.31, claw 0.12, total excluding claw 2.60.

Paratype female (WAM T138558): Body length 4.23. Propeltidium 1.12/0.65. Chelicera 0.81. Flagellum 0.35/0.08. Pedipalp: trochanter 0.37, femur 0.48, patella 0.58, tibia 0.52, tarsus 0.19, claw 0.08, total excluding claw 2.13.

Variation. Body length (females): 3.99–4.23 (n = 2).

Remarks. Draculoides mckechnieorum   is restricted to three closely situated, consecutive mesas, L, M and N, which were likely connected in the past. The mesas are situated east of Pannawonica in the Pilbara region of Western Australia ( Fig. 1B View FIGURE 1 ). The juvenile specimens listed above are associated with this species by locality and, in many cases, by sequence data ( Fig. 1B View FIGURE 1 ).

Other names. WAM SCH050 ( Abrams et al., 2019).

Etymology. The specific epithet is named in honour of the McKechnie family, in recognition of their generous support for the Foundation for the Western Australian Museum.

WAM

Western Australian Museum

COI

University of Coimbra Botany Department

T

Tavera, Department of Geology and Geophysics