Cebrenninus phaedrae, Suresh P. Benjamin, 2016

Suresh P. Benjamin, 2016, Revision of Cebrenninus Simon, 1887 with description of one new genus and six new species (Araneae: Thomisidae), Revue suisse de Zoologie 123 (1), pp. 179-200 : 189

Cebrenninus phaedrae sp. nov.

Figs 46-47, 50 , 52-56

Holotype: RMNH.ARA.159411; male; Indonesia, Borneo, Central Kalimantan, 40 km N of Palang Karaya, 2°12′36″S 113°55′2″E, secondary forest, litter; 0 9.1985, leg. Suharto Djojosudharmo.

Other material examined: RMNH.ARA.15942; 4 males, 10 females; Indonesia, Central Kalimantan, Kaharian, 20°2′S, 113°40′E; coll. Deeleman, no more label data. – RMNH.ARA.17170; 5 males, 4 females, 6 juveniles; Indonesia, West Sumatra, Rimba Panti Nature Reserve, lowland primary rainforest, leaf litter on mineral soil; 3.08.1982, leg. C. L. and P. R. Deeleman. – RMNH.ARA.17171; 1 male, 2 females; Indonesia, Central Kalimantan, Kaharian, 20°2′ S, 113°40′ E, swampy primary forest, leaf litter; 2.- 16.09.1985, leg. Suharto Djojosudharmo. – RMNH.ARA.17172; 1 female; Indonesia, Borneo, West Sarawak, Semergoh Arboretum, litter; 1984, leg. C. L. and P. R. Deeleman. – RMNH.ARA.15935; 2 males, 3 females; same locality; 23.03.1985, leg. C. L. and P. R. Deeleman. – RMNH. ARA.17173; 3 males, 7 females, 3 juveniles; Indonesia, North Sumatra, Gunung Leuser, Ketambe, lowland leaf litter trail 1.1; 7.07.1985, leg. Suharto Djojosudharmo. – RMNH.ARA.17174; 4 males, 17 females; same data as above, tr.8.4; 0 2.08.1985. – RMNH.ARA.17175; 20 males, 31 females, 10 juveniles; same data as above; 1.05.- 9.08.1985, lowland leaf litter; in addition to the above listed specimens, this sample contained several specimens of C. berau sp. nov. – RMNH.ARA.17176; 26 males, 38 females; same data as above; 24.03.1986; in addition to the above listed specimens, this sample contained several specimens of C. berau sp. nov. – RMNH.ARA.17177; 1 male; same locality, trail 2.4, leaf litter; 4.05.1986, leg. Suharto Djojosudharmo. – RMNH.ARA.15936; 2 males, 1 female; Peninsular Malaysia, Klang Valley, Selangor, Templer’s Park, 03°17.60’N 101°39.25’E, litter; 19.03.1985, leg. C. L. and P. R. Deeleman. – RMNH.ARA.17178; 2 females; Peninsular Malaysia, Klang Valley, Selangor, Templer’s Park, 03°17.60’N 101°39.25’E, leaf litter; 29.07.1980, leg. C. L. and P. R. Deeleman.

Diagnosis: Similar to C. berau sp. nov., distinguished from this and other known congeners by distinctive shape of E (posterior half bottle-shaped, anterior half filiform, tip pointed; Figs 52-53 ), C (straight prolateral margin, broadest at midpoint, hooked tip; Figs 52-53 ) and RTA (tapering, pointed tip; Figs 52-54 ). Females can be distinguished by the round spermathecae, and by short CD not being longer than the width of the wall of S ( Figs 55-56 ). Specimens of both sexes are smaller and lighter in color than specimens of C. berau sp. nov.

Etymology: Named after the ancient Greek mythological figure Phaidra.

Description: Male: Total length: 2.5; prosoma length: 1.4, width: 1.1. Leg I: femur 1.2, patella 0.3, tibia 1.0, metatarsus 0.7, tarsus 0.5. Prosoma red-brown, rounded, six eyes, PME absent, LE on light brown-colored mounds, mounds distinct but not touching ( Fig. 46 ). Opisthosoma dorsally with irregular black diffused spots, two pairs of brown circular spots towards center, laterally black spots connected to form bands ( Fig. 46 ). Legs uniformly yellow-brown. Leg formula 1243, ALE> PLE> PME. AER and PER recurved. Palps as in Figs 52-54 . Cymbium without trichobothria.

Female: Total length: 2.3; prosoma length: 1.2, width: 1.1. Leg I: femur 1.0, patella 0.3, tibia 1.0, metatarsus 0.7, tarsus 0.5. In general similar to male. Epigynum and vulva as in Figs 55-56 . Spermathecae rounded, CD short.

Distribution: Known from localities Sumatra and Peninsular Malaysia.

on

Borneo,

Figures

Figs 46 - 51. (46 - 47, 50) Photographs of Cebrenninus phaedrae sp. nov. (48 - 49, 51) Photographs of C. schawalleri sp. nov. (46, 48, 51) Male. (47, 49 - 50) Female. (46 - 49) Dorsal view. (50) Ventral view. (51) Retrolateral view. Scale lines = 0.2 mm (50 - 51), 0.5 mm (46 - 47), 1.0 mm (48 - 49).

Figs 52 - 56. Cebrenninus phaedrae sp. nov. (52, 54) Male from Malaysia (RMNH. ARA. 15936). (53) Male from Indonesia (RMNH. ARA. 15941). (55 - 56) Female from Indonesia (RMNH. ARA. 15942). (52 - 54) Male palp (52 ventral, 53 - 54 retrolateral view). (55) Epigynum, ventral view. (56) Vulva, ventral view. Scale lines = 0.1 mm (55 - 56), 0.2 mm (52 - 54).