Dendrocephalus Daday 1908

Rogers, D. Christopher, 2006, A genus level revision of the Thamnocephalidae (Crustacea: Branchiopoda: Anostraca), Zootaxa 1260, pp. 1-25 : 11

Genus Dendrocephalus Daday 1908

Dendrocephalus Daday 1908 ; Pereira 1983; Pereira & Ruiz 1995; Rabet &Thiéry 1996.

Diagnosis ( Figure 1 C, D). Everted penes long, extending to abdominal segment two or three. Rigid basal portions short, each with a single sub­conical medial projection. Rigid basal portion of penes without a distomedial patch of spines. Everted penes with a single longitudinal, basomedial row of large papilliform spines, and four or six distal longitudinal rows of smaller spines. Brood pouch pyriform. Male bearing an “antenna­like” appendage near base of first antennae. Male with frontal appendage. Male second antennae attached anterioventrally to head, slightly coalesced at base, otherwise free. Second antennal distal segment arcuate. Female second antennae lamellar, apices truncate or slightly acute. Resting eggs angular, with few shallow, subcircular impressions separated by large angular ridges.

Two subgenera are recognized.

Figures

FIGURE 1. Representative left penes of thamnocephalid genera and subgenera: A) Thamnocephalus platyurus, ventral view; B) Carinophallus ornata upper image (with penes retracted) left ventrolateral view of genital segments; lower image ventral view of everted pene; C) Dendrocephalus c ervicornis, ventral view; D) Dendrocephalus (Dendrocephalinus) acacioidea, ventral view; E) Phallocryptus sublettei, ventral view; F) Gurneya mirus, ventral view; G) Branchinella wellardi, ventral view; H) Branchinella budjiti, ventral view; I) Branchinella (Branchinellites) ondonoguae.