Evarcha flavocincta

A comparison of 4 female species from same sub-families in the same main-families of Salticidae

Subfamily: Plexippinae Evarcha flavocincta	Subfamily: Plexippinae Hyllus diardi	Subfamily: Plexippinae Hyllus semicupreus	Subfamily: Plexippinae Plexippus petersi
EDA 29-10-2014 8.5mm	INDAH 7-6-2014 11mm	SG TAWAU 21-9-2014 10mm	7-7-2014

Family: Salticidae
Subfamily: Plexippinae
Genus: Evarcha
Species : Evarcha flavocincta

♀ 8.5mm

EDA 29-10-2014 WED 9:30AM

The measurements indicated in the text are in millimetres (mm) using graft paper from bookstore.
The spider was return to the very same plant on the same day after images taken.

Medium-size salticids.

Cephalothorax light yellow to brown, swollen but weakly wider, with horn like tuft of long, stiff, slightly curved bristles on the lateral sides of anterolateral eyes.

Ocular quad broader than long, usually darker.

Clypeus vertical and narrow, often covered with white scales.

Chelicerae with 1 promarginal and 2 retromarginal teeth.

Epigyne with a transverse chitinous plate and 2 pockets in front of it, receptacles strongly sclerotised, multi-chambered.

Embolus usually short, sometimes with compound terminal apophysis.

Maxilla (Paired)
Paired maxillae cut food and manipulate it during mastication. Maxillae can have hairs and "teeth" along their inner margins. At the outer margin, the galea is a cupped or scoop-like structure, which sits over the outer edge of the labium. They also have palps, which are used to sense the characteristics of potential foods. Maxillae is brown, longer than wide, anteriorly bulged, pale yellowish, scopulate with dark brown hairs, both outer and inner margins concave.

Labium
The labium is a single structure, although it is formed from two fused secondary maxillae. It can be described as the floor of the mouth. With the maxillae, it assists manipulation of food during mastication. Labium is brown, longer than wide, constricted sub-basally, apically truncate and scopulate.

Sternum
Yellow brown, rebordered, longer than wide, clothed with long, sub marginal and fine, brown hairs, outer margins dark, slightly indented at each coxae, apical margins nearly straight, tip rounded.

Chelicerae moderately long, brown, more or less parallel, promargin with 2 and retromargin with 1 teeth, fang dark brown, curved, sharp, stout and stumpy.

Chelicerae = The mouthparts of the of a spider. Chelicerae in spiders are hollow and contain venom glands, and are used to inject venom into prey.

Chelicerae (Cheliceral base and Fang) and Pedipalps

Eight Eyes, homogenous, transparent, basally ringed with black, arranged in 3 transverse rows, anterior row recurved as viewed dorsally, ocular quad trapezoid, a little wider behind, formed by posteromedian (PME) and posterolateral (PLE) eyes, anteromedians (AME) largest, anterolaterals (ALE) nearly 1/3rd of AME,

2nd row of eyes or PME smallest, both PME and PLE set on the slope of a single tubercle, PME slightly inward to the lateral margin of ocular quad, situated almost at the centre of ALE and PLE.

Clypeus narrow, margined with white, long hairs.

Cephalothorax brown, longer than wide, elongate oval, clothed with brown hairs, cephalic region somewhat flat, transversely rectangular with ocular area brown black, sides vertical, thoracic region posteriorly depressed with distinct, medium, brown longitudinal fovea, radii faintly marked.

Cephalothorax or prosoma = A fused head and thorax.