Aeger tipularius ( Schlotheim, 1822 )

Odin, Giliane P., Charbonnier, Sylvain, Devillez, Julien & Schweigert, Günter, 2019, On unreported historical specimens of marine arthropods from the Solnhofen and Nusplingen Lithographic Limestones (Late Jurassic, Germany) housed at the Muséum national d’Histoire naturelle, Paris, Geodiversitas 41 (17), pp. 643-662: 645

publication ID

http://doi.org/ 10.5252/geodiversitas2019v41a17

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:541CF827-F02E-4086-8FB0-2C0033DD429A

DOI

http://doi.org/10.5281/zenodo.3703588

persistent identifier

http://treatment.plazi.org/id/03C23C58-FFE8-FFD4-19AA-87F0FA52FA66

treatment provided by

Valdenar

scientific name

Aeger tipularius ( Schlotheim, 1822 )
status

 

Aeger tipularius ( Schlotheim, 1822)   ( Fig. 1 View FIG A-C)

DIAGNOSIS (from Schweigert et al. 2016). — Very short smooth rostrum; Mxp3 extremely long, with movable spines; chelate P1-P3; P1-P2 bearing long movable spines; P3 with spiny chelae; achelate P4-P5 and spineless; P3 slightly larger than P1-P2; well-developed pleopods; uropodal exopod with rounded diaresis.

STUDIED MATERIAL. — Charbonnier & Garassino (2012) listed seven specimens. Careful examination leads us to re-identify some of them. Three specimens, MNHN.F. A33509 View Materials (Solnhofen), B13443 View Materials (Eichstätt), MNHN.GG.2004/8072 (unknown locality), are maintained as A. tipularius   , while four others are attributed to Aeger spinipes ( Desmarest, 1817)   , A. insignis ( Oppel, 1862)   , and Acanthochirana cordata ( Münster, 1839)   .  

COMMENTS

Our assignation is based on the very short and smooth rostrum. The carapace groove pattern typical of Aeger   – with a cervical groove steeply inclined, not joined to the dorsal margin but joined to the antennal groove; an oblique and sinuous branchiocardiac groove crossing all the carapace from the posterior margin to the hepatic region; and a hepatic groove joined anteriorly to the cervical groove and posteriorly to the branchiocardiac groove (see diagnosis in Charbonnier et al. 2017: 36) – is particularly visible on specimen A33509 View Materials ( Fig. 1A, B View FIG ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Aegeridae

Genus

Aeger