Promolotra lushui Tong & Zhang, 2023

Li, Shuhui, Bian, Dongju, Tong, Yanfeng & Zhang, Zhisheng, 2023, Two new oonopid spider species from Yunnan, China (Araneae, Oonopidae), ZooKeys 1181, pp. 155-165 : 155

Promolotra lushui Tong & Zhang sp. nov.

Figs 4 , 5 , 6 , 7

Type material.

Holotype ♂ (SYNU-647), China: Yunnan Prov., Lushui City, Pianma Town, 3.03.2011, Z. Li & L. Wang leg.; Paratypes: 2 ♀ (SYNU-648-649), 3 ♂ (SYNU-650-652), same data as for the holotype.

Diagnosis.

The new species can be distinguished from congeners by the blunt end of the cymbiobulb (arrow in Fig. 5F ) vs. lacking a blunt end (see Tong and Li 2020: figs 2A, 6A), triangular extension of the dorsal lobe of the embolar region ( ‘te’ in Fig. 5F ) vs. lacking a triangular extension (see Tong and Li 2020: figs 2E, 6H), and absence of a posterior receptacle (Fig. 6H ) vs. with a narrow posterior receptacle (see Tong and Li 2020: fig. 4G).

Description.

Male (holotype). Habitus as in Fig. 4A, B, C . Body length 2.31; carapace 1.09 long, 0.81 wide; abdomen 1.11 long, 0.87 wide. Body yellow-brown, legs yellow. Carapace (Fig. 4D, F ): oval in dorsal view, without any pattern; pars cephalica slightly elevated in lateral view, surface of pars cephalica smooth; lateral margin straight, rebordered, with small blunt denticles. Eyes (Fig. 4D, F ): ALE largest, PME, PLE subequal; ALE separated by nearly more than their radius, ALE-PLE separated by less than ALE radius, PME touching each other; posterior row recurved from above, procurved from front. Clypeus (Fig. 4F ): ALE separated from edge of carapace by 2 diameters. Mouthparts (Fig. 4E-H ): chelicerae straight, anterior face strongly swollen, with cone-shaped protuberance in lateral view; labium rectangular, anterior margin deeply incised; endites with distal excavation. Sternum (Fig. 4E ): with radial furrows between coxae, surface smooth, covered with large, round pits; setae sparse, dark, needlelike, evenly scattered. Abdomen (Fig. 4A-C ): booklung covers brown; sperm pore small, oval, rebordered, situated between anterior and posterior spiracles; dorsal scutum strongly sclerotized, covering whole abdomen; postgastric scutum strongly sclerotized, covering nearly full length of abdomen, with posteriorly-directed lateral apodemes. Palp (Figs 4I-K , 5A-G ): pale orange; femur 0.26 long, patella 0.16 long, tibia 0.13 long, cymbiobulb 0.41 long, 0.22 wide, length/maximal width = 1.86; embolar region with flat dorsal lobe (dl), small posterior one (pl), and narrow, leaf-like, wrinkled ventral one (vl), with brush-like structures (bls) in retrolateral view.

Female. As in male except as noted. Habitus as in Fig. 6A, B . Body length 2.51; carapace 1.16 long, 0.92 wide; abdomen 1.38 long, 1.12 wide. Epigastric area (Fig. 6F, G ): ‘atrium’ relatively wide, broadly oval. Endogyne (Fig. 6H ): with a T-shaped sclerite (tsc) anteriorly, very thin, long and tube-like structure (tls) can be seen inside T-shaped sclerite; with horseshoe-shaped sclerite (hss) medially; apodemes (ap) well developed.

Etymology.

The specific name is a noun in apposition taken from the type locality.

Distribution.

Known only from the type locality.

Figures

Figure 4. Promolotra lushui sp. nov., holotype male A-C habitus (dorsal, ventral and lateral views) D-F prosoma (dorsal, ventral and anterior views) G, H left chelicera (anterior and lateral views) I-K left palp (prolateral, dorsal and retrolateral views). Scale bars: 0.40 (A-F); 0.20 (I-K); 0.10 (G, H).

Figure 5. Promolotra lushui sp. nov., holotype male, SEM A-B left palp (prolateral and retrolateral views) C-D palpal bulb (dorsal and prolateral views) E-G distal part of palpal bulb (retrolateral, prolateral and dorsal views). Abbreviations: bls = brush-like structures; dl = dorsal lobe; pl = posterior lobe; te = triangle extension; vl = ventral lobe. Scale bars: 0.10 (A-D); 0.05 (E-G).

Figure 6. Promolotra lushui sp. nov., paratype female A, B habitus (dorsal and ventral views) C-E prosoma (dorsal, ventral and anterior views) F copulatory organ, ventral view G, H copulatory organ (cleared in lactic acid, ventral and dorsal views). Abbreviations: ap = apodeme; hss = horseshoe-shaped sclerite; tls = tube-like structure; tsc = T-shaped sclerite. Scale bars: 0.40 (A-E); 0.10 (G, H).

Figure 7. Distribution records of the species of Kachinia and Promolotra from Yunnan, China and Myanmar. 1. K. longling sp. nov.; 2. P. lushui sp. nov; 3. P. hponkanrazi Tong & Li, 2020; 4. K. putao Tong & Li, 2018; 5. P. shankhaung Tong & Li, 2020; 6. K. mahmolae Tong & Li, 2018.