Yueleptoneta Tong, 2022

Yang, Kuiwen, Li, Hanchao, Tong, Yanfeng & Bian, Dongju, 2022, A new genus and species of leptonetid spiders (Araneae, Leptonetidae) from Guangdong Province, China, Biodiversity Data Journal 10, pp. 80219-80219 : 80219

Yueleptoneta Tong gen. n.

Yueleptoneta Yueleptoneta dongxing Yang, Tong & Bian Status: new species described in this paper.

Description

Carapace brown and median groove needle-shaped, distinct. Six-eyed (Fig. 1 D and Fig. 3 A). ALE and PLE contiguous, PME posteriorly displaced. Chelicera with stridulatory file on the lateral margin (Fig. 2 F, I and J). Endite anterior margin with serrula (Fig. 2 D and E). Patellar gland oval (Fig. 2 G, H and K). Opisthosoma with distinct patterns. Palp (Fig. 1 G-I and Fig. 2 A-C): femur and tibia without strong spines; tarsus with a spur at tip. Palpal bulb with a leaf-shaped embolus and a membranous, flattened conductor. Female internal genitalia with a pair of highly coiled spermathecae and sperm ducts (Fig. 3 D and E).

Diagnosis

Male of the genus Yueleptoneta gen. n. is similar to Leptonetela Kratochvíl, 1978 and Longileptoneta Seo, 2015 in having a strong palpal tarsal spur (Fig. 1 G-I, Fig. 2 A and B), but can be distinguished from both genera by the palpal femur, tibia and tarsus lacking strong spines (Fig. 1 D-I) (vs. palpal tibia with a row of spines in Leptonetela ( Wang et al. 2017: figs 4C and D) and palpal femur with strong spines and palpal tarsus with a prolateral distal spur in Longileptoneta ( Seo 2015: figs 1C-G)) and the chelicerae having the stridulatory file on the lateral margin (Fig. 2 F) (vs. lacking stridulatory file in both genera). Male of the new genus is also similar to Leptoneta Simon, 1872 in the palpal femur and tibia lacking strong spines, but can be distinguished by having the palpal tarsal spur (vs. lacking palpal tarsal spur, but having strip-shaped appendices in Leptoneta ( Le Peru 2011: fig. 118)). Female of the new genus is similar to Leptonetela Kratochvíl, 1978 by having strongly coiled spermathecae (Fig. 3 E), but can be distinguished by the chelicerae having the stridulatory file on the lateral margin (Fig. 2 I and J).

Etymology

The generic name is derived from the Pinyin word “Yue”, referring to Guangdong Province (Yue is a short name for Guangdong), where the material has been collected and the genus name Leptoneta Simon. The gender is feminine.

Distribution

China (Guangdong).

Figures

Figure 1. Yueleptoneta dongxing sp. n., holotype male. A habitus, dorsal view; B habitus, ventral view; C habitus, lateral view; D prosoma, dorsal view; E prosoma, ventral view; F prosoma, lateral view; G left palp, retrolateral view; H left palp, ventral view; I left palp, dorsal view. Abbreviation: Ts = tarsal spur. Scale bars: 0.4 mm (A-F) and 0.2 mm (G-I).

Figure 2. Yueleptoneta dongxing sp. n., holotype male (A-H), paratype female (I-K), SEM. A left palp, ventral view; B left palp, retrolateral view; C detail of left palp, retrolateral view; D endite, ventral view; E detail of endite, ventral view; F left chelicera, posterior view; G patella III, dorsal view; H detail of patella III, dorsal view; I left chelicera, posterior view; J left chelicera, lateral view; K detail of patella III, dorsal view. Abbreviations: Co = conductor, Em = embolus, Ser = serrula, Str = stridulatory file, Ts = tarsal spur. Scale bars: 0.1 mm (A-G, I, J) and 0.02 mm (H, K).

Figure 3. Yueleptoneta dongxing sp. n., paratype female. A habitus, dorsal view; B habitus, ventral view; C habitus, lateral view; D genitalia, ventral view; E genitalia, dorsal view; F metatarsus II, lateral view, arrow shows preening comb. Abbreviations: At = atrium, Sd = sperm duct, Sp = spermatheca. Scale bars: 0.4 mm (A-C), 0.2 mm (D-E) and 0.1 mm (F).