Geraesta octolobata ( Simon, 1886 ) Benjamin, 2015

Benjamin, Suresh P., 2015, On the African crab spider genus Geraesta Simon, 1889 (Araneae: Thomisidae), African Invertebrates 56 (2), pp. 309-309 : 315

publication ID

https://doi.org/ 10.5733/afin.056.0205

DOI

https://doi.org/10.5281/zenodo.7914107

persistent identifier

https://treatment.plazi.org/id/D746F916-FFEC-FFD4-5621-FDF1FC8DFA69

treatment provided by

Felipe

scientific name

Geraesta octolobata ( Simon, 1886 )
status

comb. nov.

Geraesta octolobata ( Simon, 1886) View in CoL , comb. n.

Figs 17–26 View Figs 17–23 View Figs 24–26

Stephanopis octolobata Simon, 1886: 170 View in CoL (♀ syntype from MADAGASCAR, deposited in MNHN, bUt not found; species catalogue card found, but no vial in jar # 1547 mentioned therein).

Diagnosis: Males and females of G. octolobata can be distinguished from congeners by the eight dorsal lobes of the opisthosoma, which is reflected in the species name. FUrther, males can be distinguished by the combined presence of the following characters: C with a short filiform tip, concave MA with a stoUt stalK and a groove in the apical half, and filiform E slightly longer than the length of the tegUlUm.

Description:

Male.

Measurements: total length: 5.0; prosoma length: 2.7, width: 2.3. Leg I: femur 3.3, patella 0.9, tibia 3.2, metatarsus 2.6, tarsus 1.2.

Prosoma brownish with a prominent triangular-shaped white patch and random dark green/black patches ( Figs 17, 18 View Figs 17–23 ). Opisthosoma with eight whitish dorsal lobes in two rows of four each, blackish with green/black patches medially and laterally. Leg formula 1243, ALE> PLE> PME> AME. AER, PER recurved, eyes on light-brown protuberances, but not touching. Palps as in Figs 20–26 View Figs 17–23 View Figs 24–26 : single tibial apophysis with serrated tip, cymbiUm with two dorsal Tr; C broadest at centre, with a short filiform tip; MA concave with stout stalk and groove in apical half; E longer than the length of the tegulum. Female.

The female is only known from the original description.

Material examined: MADAGASCAR: Antsiranana: R.S. Manongarvio, 17.3 km 218° SW Antanambao, 14°01.35'S 48°28.09'E, 1600 m, 27.X–7.Xi.1998, leg. B.L. Fisher, 1♂ (CAS, CASENT 9057555, #1971 MT); Antananarivo: Station Forestière Angavakely, 22 km E Antananarivo, 18°55.06'S, 47°45'E, 1300 m, 8.ix.2001, leg. D. Andriamalala, T. Andriambinintsoa, J.J. Rafanomezantsoa & D. Ubick, low canopy remnant forest, general collecting, 1imm.♀ (CAS, CASENT 9001385) GoogleMaps .

RemarKs: The eXamined specimens fit the description of Simon (1886).

Distribution: Endemic to highland forests of Madagascar.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Thomisidae

Genus

Geraesta

Loc

Geraesta octolobata ( Simon, 1886 )

Benjamin, Suresh P. 2015
2015
Loc

Stephanopis octolobata

SIMON, E. 1886: 170
1886
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