Habrocestum hantaneensis, Nilani Kanesharatnam & Suresh p. Benjamin, 2016

Nilani Kanesharatnam & Suresh p. Benjamin, 2016, Three new generic records and descriptions of four new species of jumping spiders (Araneae, Salticidae) from Sri Lanka, European Journal of Taxonomy 228, pp. 1-23 : 10-13

Habrocestum hantaneensis sp. nov.

urn:lsid:zoobank.org:act:2804E80C-D3AC-4C5B-8620-E7D9EBAF5B6A

Figs 1, 5–6

Diagnosis

This species can be distinguished from its congeners by the cone-shaped and comparatively short embolus ( Figs 5 C, 6 A), long tibial apophyses with serrated tip, elongated tegulum with a large proximal lobe ( Fig. 6 A–B), epigyne with a wide vaginal roof, and characteristic shape of receptacles and accessory glands ( Fig. 6 C–D). This species is close to the female of H. laurae Peckham & Peckham, 1903 , but differs in the shape of the spermathecae and presence of accessory glands.

Etymology

The speciFc epithet refers to the type locality.

Material examined

Holotype

SRI LANKA: Ƌ, Central Province, Kandy District, Hantane (L43) , 07°14′57″ N, 80°36′50″ E, 585 m, litter, 19 Nov. 2013, leg. M.K. Rathnayake & I. Sandunika ( IFS _ SAL 350 ) .

Paratype

SRI LANKA: 1 ♀, same data as holotype ( IFS _ SAL 456 ) .

Other material

SRI LANKA: 1 Ƌ, Central Province, Kandy District, Udawattakelle (L27) , 07°17′54.71″ N, 80°38′37.42″ E, 580 m, litter, 21 Aug. 2012, leg. S.P. Benjamin ( IFS _ SAL 266 ) ; 1 Ƌ, same locality and collection data, beating, 8 Jun. 2015, leg. U.G.S.L. Ranasinghe & N. Kanesharatnam ( IFS _ SAL 484 ) ; 1 ♀, Gomaraya (L64), Road B205 , nr. 26 km post , ca 07°28′17″ N, 80°22′30″ E, 600 m, hand collection, 2 Feb. 2010, leg. S. Batuwita, P.M.H. Sandamali et al. ( IFS _ SAL 514 ) ; 1 ♀, North Western Province, Kurunagala District, Ethagala (L10) , 07°29′11.23″ N, 80°22′21.64″ E, 190 m, litter, 8 Apr. 2015, leg. S.P. Benjamin et al. ( IFS _ SAL 174 ) ; 1 ♀, Western Province, Kalutara District, Agalawatta- Kalutara Forest Reserve (L41) , 06°26′35″ N, 80°14′52″ E, 40 m, 29 Jul. 2011, leg. S. Batuwita & P.M.H. Sandamali et al. ( IFS _ SAL 298 ) .

Description

Male

MEASUREMENTS. BL 3.60, CL 2.04, PW 1.60, AL 1.04, AW 1.20. Diameter of AME 0.46, PLE 0.19, ALE 0.34, PME 0.06, PME-PME 1.33, PLE-PLE 1.12, ALE-PME 0.37, ALE-PLE 0.68. Leg I: Tr 0.24, Fm 1.10, Pt 0.40, Tb 0.80, Mt 0.48, Ta 0.36; Leg II: Tr 0.20, Fm 0.84, Pt 0.20, Tb 0.60, Mt 0.52, Ta 0.36; Leg III: Tr 0.24, Fm1.28, Pt 0.28, Tb 0.80, Mt 0.72, Ta 0.40; Leg IV: Tr 0.24, Fm 1.04, Pt 0.24, Tb 0.72, Mt 0.68, Ta 0.40.

COLOR AND BODY. Carapace blackish brown. Chelicerae dark brown with two promarginal teeth and single bicuspid retromarginal tooth. Labium yellowish brown with black margin. Sternum oval with black colored spots in middle, edges reddish brown. Vicinity of eyes blackish brown and slightly elevated. Front eyes covered with long dark brown bristles. First eye row slightly curved upward. Eye Feld comparatively longer than in congeners, occupying about half the length of prosoma ( Fig. 5 A). Median ocular quadrangle much broader than long. White hairs interspersed on lateral sides of prosoma. Prosoma high, longer than wide. Narrow fovea in midline of prosoma behind PLEs. Lateral and posterior sides of prosoma almost vertical and posterior margin slightly truncated. Abdomen: Rounded, smaller and narrower than prosoma. Dorsum with yellowish brown small dots on anterior portion, comparably large pair of yellowish brown spots at midpoint, transverse pale yellow stripes extending laterally as dashed line at posterior half ( Fig. 5 A). Venter with longitudinal pale yellow dashed-line pattern from spinnerets to epigastric furrow. Spinnerets dirty yellow.

LEGS. All legs yellow with black lateral bands. Tibia I with 3 spines on prolateral and 3 spines on retrolateral sides.

PALP. Yellowish brown palp with black hairs. Palpal tibia short. Retrolateral tibial apophyses with minute tooth-like structures at tip (serrated), strongly curved retrolaterally ( Figs 5 C–D, 6 A–B). Long cymbium narrowing toward tip. Bulbus elongated. Tegulum long with a large and broad proximal lobe extending posteriorly up to half of the palpal tibia. Embolus cone-shaped with slightly curved blunt tip, originating from under tegular ledge ( Figs 5 C, 6 A). Part of the spermophor clearly visible at shoulder of tegulum.

Female

MEASUREMENTS. BL 4.13, CL 2.11, PW 1.58, AL 1.76, AW 1.54. Diameter of AME 0.56, PLE 0.31, ALE 0.37, PME 0.06, PME-PME 1.61, PLE-PLE 1.40, ALE-PME 0.28, ALE-PLE 0.65. Leg I: Tr 0.22, Fm 1.05, Pt 0.35, Tb 0.88, Mt 0.53, Ta 0.39; Leg II: Tr 0.13, Fm 0.97, Pt 0.49, Tb 0.84, Mt 0.44, Ta 0.30; Leg III: Tr 0.18, Fm 0.97, Pt 0.48, Tb 0.84, Mt 0.48, Ta 0.26; Leg IV: Tr 0.26, Fm 1.58, Pt 0.66, Tb 0.70, Mt 0.92, Ta 0.22.

COLOR AND BODY. All characters are as in males except all legs dark brown without the distinguishable bands found in males, sternum light brown in middle with dark brown edge.

EPIGYNUM. Wide sclerotized pocket-like vaginal roof with shallow notch at posterior edge near epigastric furrow. Large copulatory openings like windows situated posterolaterally ( Figs 5 E–F, 6 C–D). Curved accessory glands with pin-like structures at the tip ( Fig. 6 D). Copulatory ducts short. Peculiarly shaped, heavily sclerotized spermathecae with thick walls. Fertilization ducts narrow arising from anterodorsal side of receptacles ( Fig. 6 D).

Figures

Fig. 5. Habrocestum hantaneensis sp. nov. A, C – D. Ƌ (IFS _ SAL 350). B, E – F. ♀ (IFS _ SAL 456). A. – B. Habitus, dorsal view. C. Palp, ventral view. D. Palp, retrolateral view. E. Epigynum, ventral view. F. Vulva, ventral view. Abbreviations: AG = accessory gland; E = embolus; EB = embolic base; FD = fertilization duct; MW = membranous window; PLT = proximal lobe of tegulum; RTA = retrolateral tibial apophysis; S = spermathecae; SD = sperm duct; VR = vaginal roof. Scale bars: A – B = 1 mm; C – F = 0.2 mm.