Anthalona verrucosa pectinata ( Elías-Gutiérrez & Suárez-Morales, 1999 ), DAMME, KAY VAN, SINEV, ARTEM YU & DUMONT, HENRI J., 2011

DAMME, KAY VAN, SINEV, ARTEM YU & DUMONT, HENRI J., 2011, Separation of Anthalona gen. n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines, Zootaxa 2875 (1), pp. 1-64: 48

publication ID

http://doi.org/ 10.11646/zootaxa.2875.1.1

persistent identifier

http://treatment.plazi.org/id/0390471D-FFD4-1800-FF22-D40D691ECAAF

treatment provided by

Felipe

scientific name

Anthalona verrucosa pectinata ( Elías-Gutiérrez & Suárez-Morales, 1999 )
status

comb.nov.

Anthalona verrucosa pectinata ( Elías-Gutiérrez & Suárez-Morales, 1999)   comb.nov.

( Fig. 24)

Alona pectinata Elías-Gutiérrez & Suárez-Morales, 1999   .

Material examined. Five parthenogenetic females from Mahajual, Yucatan Peninsula, Mexico, Leg. A.A. Kotov, 2003. Three specimens deposited under RBIN IG 31782 INV 96757 View Materials   -96758.

Description. Parthenogenetic females. Described by Elías-Gutiérrez & Suárez-Morales (1999). Only some notes accompanying Figure 24 are presented here, to compare with A. verrucosa verrucosa ( Sars, 1901)   : Habitus variable according to original description and average of 0.29mm, dimensions length/height about 1.6 ( Figs 24A– B). No strong expanded posterior portion, no strong differentiation in marginal setae ( Fig. 24A) and no ornamentation on carapace ( Fig. 24B).

Main head pores at some distance from lateral pores ( Fig. 24D), up to two IP lengths.

Second antennae as for genus but with thickened spinules and long terminal spines, exopod spine 1.8 times terminal segment ( Fig. 24D).

Postabdomen ( Fig. 24E) short, but with relatively long marginal teeth ( Fig. 24F). Distal spine in (distal) lateral fascicles reaching beyond marginal denticles, by maximally a third of the spine length ( Fig. 24H). Basal spine of postabdomen just longer than basal claw width ( Fig. 24G).

Five limb pairs, as for genus, all without long projections on epipodites (e.g., Fig. 24O).

First limb typical, but with few (about six) teeth in the long setae of second endite ( Fig. 24I). ODL seta as long as longest IDL seta ( Fig. 24J). IDL setae with modified armature, basal spines shorter than distal part of the seta (beyond the basal spine) ( Fig. 24K).

Second limb ( Fig. 24N) with eight scrapers of which third and sixth modified, the latter with eight to nine stronger teeth ( Fig. 24M). Third limb with six setae on exopodite, of which the first markedly longer than second, fourth and fifth setae similar in length (fifth just longer).

Fourth limb ( Fig. 24O) with first three exopodite setae of similar lengths, and final three shorter; seta four as long as sixth, and fifth sticking out in between as the longer one ( Fig. 24O).

Fifth limb in Elías-Gutiérrez & Suárez-Morales (1999).

Differential diagnosis. A. verrucosa pectinata   is relatively small (0.29mm); the posterior group of setae on the carapace is not as marked as in A. verrucosa verrucosa   . It differs mainly in IDL morphology, with less pronounced armature, and lacks long projections on the limb epipodites. The terminal spine on second antenna (exopod) is relatively longer in ssp. pectinata   .

Distribution and ecology. Yucatan Peninsula, Mexico; originally from permanent waters; a scraper associated with periphyton ( Elías-Gutiérrez & Suárez-Morales 1999).

Kingdom

Animalia

Phylum

Arthropoda

Class

Branchiopoda

Order

Diplostraca

Family

Chydoridae

Genus

Anthalona

Loc

Anthalona verrucosa pectinata ( Elías-Gutiérrez & Suárez-Morales, 1999 )

DAMME, KAY VAN, SINEV, ARTEM YU & DUMONT, HENRI J. 2011
2011
Loc

Alona pectinata Elías-Gutiérrez & Suárez-Morales, 1999

Elias-Gutierrez & Suarez-Morales 1999
1999