Myrmarachne aff. tristis ( Simon, 1882 )

Benjamin, Suresh P., 2015, Model mimics: antlike jumping spiders of the genus Myrmarachne from Sri Lanka, Journal of Natural History 49 (43), pp. 2609-2666 : 2658-2660

publication ID

https://doi.org/ 10.1080/00222933.2015.1034209

publication LSID

lsid:zoobank.org:pub:B723C180-996B-471D-B920-4D08E7A8CD53

DOI

https://doi.org/10.5281/zenodo.4333072

persistent identifier

https://treatment.plazi.org/id/AF67681A-4423-0F62-2196-FD47FDF6859F

treatment provided by

Carolina

scientific name

Myrmarachne aff. tristis ( Simon, 1882 )
status

 

Myrmarachne aff. tristis ( Simon, 1882) View in CoL

( Figure 38A–D View Figure 38 )

Salticus tristis Simon, 1882: 212 .

Remarks

Provisional identification is based on the description of the tristis -group by Wanless (1978).

Diagnosis

Small spiders, separated from all other Sri Lankan species of the genus by the chelicerae: shorter than the prosoma, fangs with a bulbous base ( Figure 38A, B View Figure 38 ). Further, the disk-shaped male palp, with the embolus positioned on the borders of the tegulum ( Figure 38C, D View Figure 38 ) is characteristic.

Male. total length: 5.6; prosoma length: 3.2, width: 1.2. Leg I: femur 1.2, patella 0.4, tibia 1.2, metatarsus 0.6, tarsus 0.4. Prosoma oval, almost as wide as long. The cephalic part of the prosoma is elevated and sides parallel. Posterior half rounded. Prosoma laterally with dark markings ( Figure 38A, B View Figure 38 ). All eyes surrounded by dark rings. Opisthosoma oval, longer than wide, with a clear constriction in the centre of the anterior half ( Figure 38A, B View Figure 38 ). Dorsally, sclerotized, ventrally softer. Chelicerae constricted at the base, thickest at the centre ( Figure 38A, B View Figure 38 ). Male palps disk-shaped, with the embolus positioned on the borders of the tegulum ( Figure 38C, D View Figure 38 ). Chelicerae dentition not examined. Leg formula 4132. Leg spination not examined. Females have not been found from Sri Lanka.

Distribution

Libya to India. New record for Sri Lanka.

Material examined

Sri Lanka: Kimbissa : 1 male, 0.8 km west of Sigiriya Jungle, 28 June–4 July 1978, Coll. K.V. Krombein, P.B. Karunaratne, J. Wijesinghe, V. Kulasekara, USNM .

List of comparative material examined

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Myrmarachne

Loc

Myrmarachne aff. tristis ( Simon, 1882 )

Benjamin, Suresh P. 2015
2015
Loc

Salticus tristis

Simon E 1882: 212
1882
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