Platnickina fritilla Gao & Li, 2014

Dhiya’ulhaq, Naufal Urfi, Buchori, Damayanti, Hidayat, Purnama, Scheu, Stefan & Drescher, Jochen, 2025, Two new species and three new records of the cobweb spider Platnickina (Araneae, Theridiidae) from Sumatra, Evolutionary Systematics 9 (2), pp. 203-220 : 203-220

Platnickina fritilla Gao & Li, 2014

Figs 7 , 8

Platnickina fritilla : Gao & Li, 2014: figs 77, figs 61–64.

Material examined.

INDONESIA – Jambi Province • 1 ♂; Batang Hari, Hutan Harapan Conservation Area ; 02°10'42.4"S, 103°19'58.2"E; elev. 54 m; 3 Aug. 2013; J. Drescher leg.; canopy fogging in rainforest; GOET 2013_HF 3.2_AraTrid 180 N_001 (to be transferred to MZB) . • 1 ♂; Batang Hari, Hutan Harapan Conservation Area ; 02°09'48.9"S, 103°20'04.4"E; elev. 73 m; 18 Jul. 2013; J. Drescher leg.; canopy fogging in rainforest; GOET 2013_HF 2.1_AraTrid 180 N_001 (to be transferred to ZMH) . • 1 ♂; Sarolangun, Air Hitam, Desa Baru ; 02°00'56.8"S, 102°45'12.6"E; elev. 64 m; 14 Jul. 2013; J. Drescher leg.; canopy fogging in jungle rubber plantation; GOET 2013_BJ 4.1_AraTrid 180 N_001 (to be transferred to SMF) .

Diagnosis.

Males are distinguished from all other congeners by the TTA having a denticulate tip with acute protrusion (Figs 7 D, E , 8 B ; Gao and Li 2014, figs 62 A, B, 64 A, B). Females are distinguished from all other congeners by the short copulatory ducts (half the length of spermathecae) and small, square-shaped atrium ( Gao and Li 2014: figs 61 C, D, 63 A, B).

Description.

Male ( 2013_HF 3.2_AraTrid 180 N_001 ; Figs 7 , 8 ). Total length 1.60. Prosoma length 0.73; width 0.62. Opisthosoma length 0.87; width 0.58. Diameter of eyes: AME 0.10; ALE 0.07; PLE 0.08; PME 0.09. Interdistances between eyes: AME – AME 0.05; AME – ALE 0.02; ALE – ALE 0.23; PME – PME 0.07; PME – PLE 0.06; ALE – PLE 0.00; AME – PME 0.08; PLE – PLE 0.30. Leg measurements: leg I 6.32 (2.20, 0.24, 2.11, 1.34, 0.43); leg II 4.13 (1.45, 0.21, 1.26, 0.85, 0.36); leg III 2.27 (0.80, 0.13, 0.52, 0.52, 0.30); leg IV 2.96 (0.99, 0.19, 0.74, 0.70, 0.34). Prosoma pear-shaped, brown; dorsally with an elongated black mark (Fig. 7 A ). Eyes ringed in red; AME larger than the other eyes; AER strongly recurved; PER straight (Fig. 7 A ). Chelicerae brown. Maxillae brown (Fig. 7 B ). Labium fused with sternum, brown (Fig. 7 B ). Sternum triangular, dark brown (Fig. 7 B ). Opisthosoma oval, conspicuously tuberculate, pinkish yellow with mottled black and white (guanine) spots; dorsally with two longitudinal rows of large black patches (Fig. 7 A ). Legs light-brown, with numerous faint black patches (Fig. 7 A ). Spinnerets brown, encircled by a black ring (Fig. 7 B ).

Palp (Figs 7 C – E , 8 ): Cymbium oval, brown; distally with one thick spine. Conductor membranous, finger-shaped, constricted in the middle, curved. TTA finger-shaped; tip denticled, additionally with an acute protrusion. Embolus membranous, curved, claw-shaped, approximately half the length of bulb.

Distribution.

China; Indonesia ( Sumatra: Jambi [new record, Fig. 15 ]).

Figures

Figure 7. Platnickina fritilla Gao & Li, 2014, male (2013 _ HF 3.2 _ AraTrid 180 N _ 001). A, B. Habitus; A. Dorsal view; B. Ventral view; C – E. Left palp; C. Prolateral view; D. Ventral view; E. Retrolateral view. Scale bars: 0.5 mm (A, B); 0.1 mm (C – E).

Figure 8. Platnickina fritilla Gao & Li, 2014, male (2013 _ HF 3.2 _ AraTrid 180 N _ 001), left palp. A. Prolateral view; B. Ventral view. Abbreviations: c = conductor; e = embolus; ma = median apophysis; tta = theridiid tegular apophysis. Scale bars: 0.1 mm.

Figure 15. Distribution of five species of Platnickina Koçak & Kemal, 2008 in Jambi Province, Sumatra, Indonesia. Spiders presented in this study were collected by canopy fogging in 32 permanent research plots of the EFForTS project (Drescher et al. 2016). Green areas on the globe belong to Indonesia, and Jambi Province in Sumatra, respectively.