Asterocheres quiteriae, Bahiana & Farias & Neves & Johnsson, 2025

Bahiana, Bruna, Farias, Amilcar, Neves, Elizabeth & Johnsson, Rodrigo, 2025, The taxonomic status of Phyllocheres Humes, 1996 and Neoasterocheres Canário et al., 2017, and three new Asterocheres Boeck, 1859 species (Siphonostomatoida, Asterocheridae) from Brazil, Zootaxa 5696 (2), pp. 205-232 : 213-216

publication ID

https://doi.org/10.11646/zootaxa.5696.2.2

publication LSID

lsid:zoobank.org:pub:0326BE2F-C589-4E93-955C-EFD44035CB92

persistent identifier

https://treatment.plazi.org/id/DC438877-FFA2-FF9E-49DB-FD72F5F6F937

treatment provided by

Plazi

scientific name

Asterocheres quiteriae
status

 

Genus Asterocheres Boeck, 1859 View in CoL

Asterocheres quiteriae sp. nov.

urn:lsid:zoobank.org:act:

( Figs. 5–7 View FIGURE 5 View FIGURE 6 View FIGURE 7 )

Diagnosis: Asterocheres . Female antennule 21-segmented. Antenna with endopod 3-segmented, with armature formula: 0,1,2. Mandibular palp 2-segmented. Maxillule with 4 setae on inner lobe, 4 setae on outer lobe. Maxilliped 6-segmented, with armature formula: 0,0,0,0,1,1+claw.

Material examined: Holotype adult female ( UFBA 3988 ) dissected on a permanent slide . Paratype adult female ( UFBA 3989 ) preserved in ethanol. Specimens found associated with sponge Callyspongia sp. Duchassaing & Michelotti 1864, from a private terminal in Salvador City ( 12°58’19.7”S, 38°30’56.9”W), Bahia State, Brazil. Collected by LABIMAR team on September 29, 2019 GoogleMaps .

Description of female: Adult female. Body ( Fig. 5a View FIGURE 5 ) 673 µm long and 439 µm wide, cyclopiform shaped, with prosome longer than wide and urosome cylindrical. Third pedigerous somite longer than others. Prosome 467 µm long and 439 µm wide. Length:width ratio=1:0.9. Urosome ( Fig. 5b View FIGURE 5 ) 4-segmented, fifth pedigerous somite 49 µm long and 100 µm wide. Genital double-somite 96 µm long and maximum width 93 µm, length:width ratio=1:0.9. Two postgenital somites, both wider than long (29×53 and 40×49 µm, respectively). Prosome:urosome ratio=1:0.4. Caudal rami slightly longer than wide, 22×20 µm. Length:width ratio=1:0.9 µm, armed with 6 plumose setae.

Antennule ( Fig. 5c View FIGURE 5 ) 284 µm long (not including setae), 21-segmented. Length of segments in proximal to distal order: 23, 19, 9, 8, 9, 7, 7, 9, 9, 4, 9, 13, 18, 18, 17, 21, 23, 28, 12, 13, and 8 µm long, respectively. Segmental homologies and armature as follows: 1(I)-2, 2(II)-2, 3(III)-1, 4(IV)-2, 5(V)-1, 6(VI)-2, 7(VII)-2, 8(VIII)-2, 9(IX– XII)-5, 10(XIII)-0, 11(XIV)-1+I, 12(XV)-1, 13(XVI)-2, 14(XVII)-1, 15(XVIII)-2, 16(XIX)-2, 17(XX)-0, 18(XXI)- 1+Aesthetasc, 19(XXII-XXIII)-2, 20(XXIV-XXV)-3, 21(XXVI–XXVIII)-7. Aesthetasc 119 μm long.

Antenna ( Fig. 5d View FIGURE 5 ) biramous, 241 µm long, including terminal claw. Small unarmed coxa, 21 µm long; basis 58 µm long, without ornamentation. Exopod 1-segmented, 10 µm long, with a long terminal seta and a small subdistal seta. Endopod 3-segmented; first segment 56 µm long, with outer margin ornamented medially with row of long spinules; second segment 11 µm long, triangular-shaped, armed with distal seta; third segment 20 µm long, armed with 2 naked and slender distal setae, unequally-sized. Terminal claw 75 µm long.

Oral cone ( Fig. 6a View FIGURE 6 ) reaching between insertion of maxilliped and first leg. Mandible ( Fig. 6b View FIGURE 6 ) consisting of stylet 124 µm long, tapering distally. Mandibular palp 2-segmented, measuring 78 and 10 µm long, respectively; first segment elongated, without ornamentation. Second segment short and armed with two setae, a long one, and the other short and slender, measuring half the size of the former.

Maxillule ( Fig. 6c View FIGURE 6 ) bilobed, both lobes laterally naked. Inner lobe wide and stout, 87 µm long, armed with 4 setae, 3 of them long and a short one. Outer lobe 15 µm long, armed with 4 long setae. All setae naked in both lobes. Maxilla ( Fig. 6d View FIGURE 6 ) 226 µm long, 2-segmented. Syncoxa 89 µm long, unarmed and curved claw, without ornamentation, 137 µm long.

Maxilliped ( Fig. 6e View FIGURE 6 ) 6-segmented, 306 µm long. Syncoxa 55 µm long, unarmed; basis 99 µm long, unarmed, ornamented with row of setules on distal inner margin. Endopod 4-segmented, segments measuring 13, 9, 13, and 30 µm long, respectively, with armature formula (0,0,1,1+claw). Distal claw 87 µm long, curved and elongated. All setae naked.

Legs 1–4 ( Figs. 7a–d View FIGURE 7 ) biramous, with 3-segmented rami. Armature formula of legs as follows:

Leg 1 ( Fig. 7a View FIGURE 7 ) basis with row of setules on inner margin, coxa with plumose seta, showing spinules only along the outer margin of the first exopodal segment. All other exopodal and endopodal margins naked. First exopodal segment of leg 1 with large spine, reaching third exopodal segment, and second exopodal segment with very small spine. Legs 2 to 4 ( Figs. 7b–d View FIGURE 7 ) showing spinules on outer margin of all exopodal segments, and also on outer margin of second and third endopodal segments. These legs also showing setules on outer margins of the first endopodal segments.

Leg 5 ( Fig. 7e View FIGURE 7 ) with free segment, elongated, almost 5x longer than wide, with 2 long terminal setae and setules proximally on inner margin. All setae naked.

Adult male: Unknown.

Etymology. The species name “ quiteriae ” is given in honor of Lieutenant Maria Quitéria, known as the first woman to enlist in the Brazilian army, dressed as a man, during the Brazilian Independence War, and has her name included in the book of the Heroes and Heroines of the Country.

Type locality. A private terminal in Salvador City ( 12°58’19.7”S, 38°30’56.9”W), Bahia State, Brazil GoogleMaps .

Remarks: Asterocheres is the largest genus of the Asterocheridae family, containing 104 valid species ( Walter & Boxshall 2025). Due to its many species, it can be divided into two groups: the asterocherids with female antennules containing 21 segments and the asterocherids with the female antennule containing 19 or 20 segments ( Conradi & Bandera 2011).

Asterocheres quiteriae sp. nov. is included in the group of species with 21-segmented female antennules and shares with those species a 2-segmented mandibular palp and 6-segmented maxilliped. Asterocheres quiteriae sp. nov. shares these characteristics with 16 congeners: A. aesthetes Ho, 1984 ; A. culicis Kim & Lee, 2024 ; A. cuspis Kim, 2016 ; A. dokdoicus Kim & Lee, 2024 ; A. fici Kim & Lee, 2024 ; A. flustrae Ivanenko & Smurov, 1997 ; A. geminus Kim & Lee, 2024 ; A. genodon Stock, 1966 ; A. horridus Kim, 2016 ; A. lilljeborgi Boeck, 1859 ; A. nidorelliae Reyes-González & Suárez-Morales, 2021 ; A. nodulosus Kim & Lee, 2024 ; A. peniculatus Kim, 2010 ; A. reginae Boxshall & Huys, 1994 ; A. simulans Scott, 1898 ; A. tubiporae Kim, 2004 .

Asterocheres quiteriae View in CoL sp. nov. can be distinguished from nine of these species based on the length of the siphon; this new species has the oral cone reaching close to the first leg intercoxal plate. This pattern is different from A. aesthetes View in CoL , A. cuspis View in CoL , A. flustrae View in CoL , A. lilljeborgi View in CoL , A. nidorelliae View in CoL , A. nodulosus View in CoL , A. reginae View in CoL , A. simulans View in CoL , and A. tubiporae View in CoL whose siphons do not reach beyond the maxilliped ( Boeck 1859; Boxshall & Huys 1994; Scott 1898; Ivanenko & Smurov 1997; Kim 2004a; Kim 2016; Reyes-González & Suárez-Morales 2021; Kim & Lee 2024).

Asterocheres quiteriae View in CoL sp. nov. exhibits two major apomorphies: the exopodal segment of the antenna with a long terminal seta and a small subdistal seta, and leg 5 armed with two equal setae. In contrast, A. culicis View in CoL , A. dokdoicus , A. fici View in CoL , A. geminus View in CoL , A. genodon View in CoL , A. horridus View in CoL , and A. peniculatus View in CoL have three setae on the exopodal segment of the antenna and leg 5 armed with three setae ( Stock 1966b; Kim 2010; 2016; Kim & Lee 2024).

Kingdom

Animalia

Phylum

Arthropoda

Class

Copepoda

Order

Siphonostomatoida

Family

Asterocheridae

Genus

Asterocheres

Loc

Asterocheres quiteriae

Bahiana, Bruna, Farias, Amilcar, Neves, Elizabeth & Johnsson, Rodrigo 2025
2025
Loc

Asterocheres quiteriae

Bahiana & Farias & Neves & Johnsson 2025
2025
Loc

Asterocheres quiteriae

Bahiana & Farias & Neves & Johnsson 2025
2025
Loc

A. nodulosus

Kim & Lee 2024
2024
Loc

A. culicis

Kim & Lee 2024
2024
Loc

A. dokdoicus

Kim & Lee 2024
2024
Loc

A. fici

Kim & Lee 2024
2024
Loc

A. geminus

Kim & Lee 2024
2024
Loc

A. nidorelliae

Reyes-Gonzalez & Suarez-Morales 2021
2021
Loc

A. cuspis

Kim 2016
2016
Loc

A. horridus

Kim 2016
2016
Loc

A. peniculatus

Kim 2010
2010
Loc

A. tubiporae

Kim 2004
2004
Loc

A. flustrae

Ivanenko & Smurov 1997
1997
Loc

A. reginae

Boxshall & Huys 1994
1994
Loc

A. aesthetes

Ho 1984
1984
Loc

A. genodon

Stock 1966
1966
Loc

A. simulans

Scott 1898
1898
Loc

A. lilljeborgi

Boeck 1859
1859
Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF