Antichiropus cirratus Car, 2019

Car, Catherine A., Harvey, Mark S., Hillyer, Mia J. & Huey, Joel A., 2019, The millipede genus Antichiropus (Diplopoda: Polydesmida: Paradoxosomatidae), part 3: species of the Pilbara bioregion of Western Australia, Zootaxa 4617 (1), pp. 1-71 : 17-19

Antichiropus cirratus Car , n. sp.

( Figs 7 A–F, 11)

ZooBank LSID: urn:lsid:zoobank.org:act:F258BBD0-4F4F-4775-8F00-EA53A4F4A39D

Type material examined. Australia: Western Australia: holotype male, Area C, 87.2 km NW. of Newman , 22°59’21”S, 118°58’56”E, 1 May 2010, wet pitfall trap, S. Ford and G. O’Connel ( WAM T144537 ) . Paratypes: 1 female, collected with holotype ( WAM T105993 , GenBank accession number 12S, MK 735753 ; 28S, MK 735814 ; COIII, MK 735935 ; CytB, MK 735988 ); 1 female, collected with holotype ( WAM T105994 , GenBank accession number 12S, MK 735754 ; COI, MK 735863 ; COIII, MK 735936 ; CytB, MK 735989 ) .

Other material examined. Australia: Western Australia: 1 female (damaged), Area C, 101 km NW. of Newman , 23°00’20”S, 118°49’39”E, 1 May 2010, wet pitfall trap, S. Ford and G. O’Connel ( WAM T105988 , Gen- Bank accession number 12S, MK 735750 ) ; 1 female (damaged), Area C, 89.6 km NW. of Newman , 23°00’04”S, 118°56’52”E, 1 May 2010, wet pitfall trap, S. Ford and G. O’Connel ( WAM T105991 , GenBank accession number 12S, MK 735751 ; COI, MK 735862 ; COIII, MK 735933 ; CytB, MK 735986 ) ; 1 juvenile, Area C, 86.2 km NW. of Newman , 23°00’05”S, 118°58’54”E, 1 May 2010, wet pitfall trap, S. Ford and G. O’Connel ( WAM T105992 , GenBank accession number 12S, MK 735752 ; COIII, MK 735934 ; CytB, MK 735987 ) ; 1 female (damaged), Area C, 85.2 km NW. of Newman , 23°00’13”S, 118°59’39”E, 1 May 2010, wet pitfall trap, S. Ford and G. O’Connel ( WAM T105995 ) ; 1 male, Area C, 81.8 km NW. of Newman , 23°00’18”S, 119°01’59”E, 1 May 2010, wet pitfall trap, S. Ford and G. O’Connel ( WAM T106004 , GenBank accession number 12S, MK 735755 ; 28S, MK 735815 ; COIII, MK 735937 ) ; 1 male, Area C, 85.2km NW. of Newman , 23°00’13”S, 118°59’39”E, 1 May 2010, wet pitfall trap, S. Ford and G. O’Connel ( WAM T106134 , GenBank accession number COI, MK 735864 ) ; 1 juvenile, Hope Downs , 81.4 km NW of Newman, 22°56’31”S, 119°05’02”E, 26 June 2010, leaf litter, G. Humphreys and P. Runham ( WAM T107388 ; GenBank accession number 12S, MK 735756 ; 28S, MK 735816 ; COI, MK 735865 ; COIII, MK 735938 ; CytB, MK 735990 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 22°57’13.9”S, 118°53’20.3”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140187, Genbank accession number 12S, MK 735772 ; COI, MK 735894 ; COIII, MK 735951 ; CytB, MK 735999 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 23°00’19.5”S, 119°01’57.2”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140188, Genbank accession number 12S, MK 735773 ; COI, MK 735895 ; COIII, MK 735952 ; CytB, MK 736000 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 23°00’19.5”S, 119°01’57.2”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140189, Genbank accession number 12S, MK 735774 ; COI, MK 735896 ; COIII, MK 735953 ; CytB, MK 736001 ) ; 1 female, South Flank , ca. 95 km NW of Newman, 23°00’19.5”S, 118°59’44.2”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140190, Genbank accession number 12S, MK 735775 ; COI, MK 735897 ; COIII, MK 735954 ; CytB, MK 736002 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 22°58’06.8”S, 118°56’57.3”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140191, Genbank accession number 12S, MK 735776 ; COI, MK 735898 ; COIII, MK 735955 ; CytB, MK 736003 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 22°58’09.8”S, 118°56’57.8”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140192, Genbank accession number 12S, MK 735777 ; COI, MK 735899 ; COIII, MK 735956 ; CytB, MK 736004 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 22°58’10.6”S, 118°56’45.7”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140193, Genbank accession number 12S, MK 735778 ; COI, MK 735900 ; COIII, MK 735957 ; CytB, MK 736005 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 22°58’10.6”S, 118°56’45.7”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140194, Genbank accession number 12S, MK 735779 ; COI, MK 735901 ; COIII, MK 735958 ; CytB, MK 736006 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 22°58’10.6”S, 118°56’45.7”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140195, Genbank accession number 12S, MK 735780 ; COI, MK 735902 ; COIII, MK 735959 ; CytB, MK 736007 ) ; 1 juvenile, South Flank , ca. 95 km NW of Newman, 22°57’29.6”S, 118°57’16.4”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140196, Genbank accession number 12S, MK 735781 ; COI, MK 735903 ; COIII, MK 735960 ; CytB, MK 736008 ) ; 1 female, South Flank , ca. 95 km NW of Newman, 22°59’15.4”S, 118°59’51.3”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140197, Genbank accession number 12S, MK 735782 ; COI, MK 735904 ; COIII, MK 735961 ; CytB, MK 736009 ) ; 1 female, South Flank , ca. 95 km NW of Newman, 22°59’15.4”S, 118°59’51.3”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140198, Genbank accession number 12S, MK 735783 ; COI, MK 735905 ; COIII, MK 735962 ; CytB, MK 736010 ) ; 1 female, South Flank , ca. 95 km NW of Newman, 22°59’15.4”S, 118°59’51.3”E, 23 March 2016, sifting leaf/soil, B. Durrant ( WAM T 140199, Genbank accession number 12S, MK 735784 ; COI, MK 735906 ; COIII, MK 735963 ; CytB, MK 736011 ) .

Diagnosis. Gonopod: Antichiropus cirratus Car , n. sp. is most similar to A. pendiculus Car , n. sp. ( Fig 27 ), each carrying a solenomere that is very long, slender and curled. Antichiropus cirratus has, however, a straight daggerlike main femoral process, while that of A. pendiculus is slender, curved and finger-like. The femur of A. cirratus broadens suddenly at its anterior end, while that of A. pendiculus widens gradually.

Description. Male holotype: Body ca. 15 mm long; midbody ring ca. 2 mm wide, with distinct, smooth waist, prozonite and metazonite of similar widths.

Colour (in alcohol) deep brown overall ( Fig 7A ); leg colour slightly lighter. No paranota ( Fig 7B ).

Sternites without obvious processes/tubercles, sternal lamella small, narrow, rounded.

Leg coxal processes absent. Anterior spiracles at midbody very small, flat.

Head smooth, with no sculpturing; frons smooth, with very few setae; face very narrow, maximum width ca. 4x distance between antennal sockets; sockets separated by ca. 2 x socket width.

Antennae slender, uniform, of moderate length, reaching to ring 2.

Collum ca. 1x length of head (in lateral view) ( Fig 7A ).

Gonopod of medium length, reaching ring 5; coxa (C) ca. 1/2 length of femorite and broader than proximal end of femorite (not shown in Fig 7 ); prefemur (PF) considerably shorter than femorite with pronounced lip; femorite (F) relatively slender for half length, becoming thicker with distinct protuberance near apex; main femoral process (MFP) relatively short compared with solenomere, straight pointed, dagger-like; second femoral process (fp1) broad, pointed, curved, claw-like; prolongation of femorite apex (prof) absent; solenomere (S) very long, slender, curled, looping back on itself; solenomere tip slender, smooth, pointed; solenomere process (sp1) a minute process near the soltip (not shown in Fig 8). (Figs 7C–F). Female: Very similar to male but broader (2.5 mm) when viewed dorsally, stouter when viewed laterally, with shorter, more slender legs (WAM T105993).

Distribution. Found only in the mining area known as Area C in the Pilbara (Fig 11).

Etymology. The species epithet refers to the shape of the solenomere (Latin, adjective, cirratus, curly). Remarks. The females and juveniles are assumed to be the same species, as they were collected either from the same small area or at the same time as the male.

Figures

FIGURE 7. Antichiropus cirratus Car, n. sp., holotype male (WAM T144537): A–B, habitus: A, lateral view; B, dorsal view; C–F, left gonopod: C, posterior view; D, anterior view; E, medial view; F, lateral view. Abbreviations: F, femorite; fp1, second femoral process; MFP, main femoral process; PF, prefemur; S, solenomere; stip, solenomere tip. Scale bars: A = 2 mm; B = 1 mm; C–F = 0.5 mm.

FIGURE 27. Antichiropus pendiculus Car, n. sp.: holotype male (WAM T91862): A–B, habitus: A, lateral view; B, dorsal view; C–F, left gonopod: C, posterior view; D, anterior view; E, medial view; F, lateral view. Abbreviations: F, femorite; fp1, femoral process two; MFP, main femoral process; PF, prefemur; S, solenomere. Scale bars: A = 2 mm; B = 1 mm; C–F = 0.2 mm.