A review of Dendrocephalus (Dendrocephalinus) (Crustacea: Anostraca) with the first records of male-male anostracan aggressive competition Author Rogers, D. Christopher Author Dunn, Ann Author Price, W. Wayne text European Journal of Taxonomy 2019 2019-03-26 509 1 14 journal article 27817 10.5852/ejt.2019.509 094c42ec-da3a-45cf-a48d-079d7b86c5b6 2612812 EA21763A-C185-4650-A075-5B9750640F50 Subgenus Dendrocephalinus Rogers, 2006 Dendrocephalinus Rogers, 2006 : 7 , 12, fig. 1D. Chirocephalus – Creaser 1940 : 435 , figs 1–6. Branchinella – Dexter 1953 : 756 , 761, figs 24–28. — Moore 1967 : 219 , figs 1–3. — Belk & Sissom 1992 : 312 , figs 1–3. — Belk & Brtek 1995 : 323 , 325. — Brendonck 1997 : 451 –454. — Brtek & Mura 2000 : 1077 , figs12–17. — Brtek 1997: 21–22. — Brtek 2002 : 54 . Type species Chirocephalus lithacus Creaser, 1940 ( by designation herein ) Diagnosis (Updated from Rogers 2006 ) Fully extended gonopods extending to third or base of fourth abdominal segment. Gonopod basal portion chitinised, rigid, subcylindrical, bearing a single ventromedial tubercle. Gonopod distal eversible portion soft, distal third expanded, comb plate lacking, distal half with four longitudinal rows of short spines, each row evenly spaced around gonopod. Brood pouch expanded proximally, distal portion either narrowing abruptly to posteriorly directed subcylindrical tube, extending to base of fourth to eighth abdominal segment, or absent. Male abdomen first two or three segments with ventrolateral spiniform projections. Male first thoracopods unmodified. Nearctic ( USA , Mexico (?)). All species occur within the Coastal Plain anostracan biogeographic region ( Rogers, 2014a ). Remarks We suspect that this taxon may actually represent an independent genus, however molecular analyses will be required to demonstrate this. At this time we choose to conservatively maintain the taxon as a subgenus.