Myrmarachne mixiaoqii, Wang & Li, 2023

Wang, Cheng & Li, Shuqiang, 2023, Notes on twelve species of jumping spiders from Hainan Island, China (Araneae, Salticidae), ZooKeys 1167, pp. 159-197 : 159

Myrmarachne mixiaoqii sp. nov.

Figs 11 , 12

Type material.

Holotype ♂ (IZCAS-Ar44519), China: Hainan: Wuzhishan City, Wuzhishan National Nature Reserve, hillside (18°53.83′N, 109°41.88′E, ca. 1590 m), 9.iv.2009, G. Tang leg. Paratypes 2♀ (IZCAS-Ar44520-44521), same data as holotype; 1♀ (IZCAS-Ar44522), same site as holotype, 8.iv.2009, G. Tang leg.; 1♀ (IZCAS-Ar44523), Lingshui County, Diaoluoshan National Nature Reserve, Power Station (18°39.84′N, 109°55.81′E, ca. 100 m), 20.iv.2009, G. Tang leg.

Etymology.

The specific name is a patronym of Prof. Xiaoqi Mi, who greatly helped us with this research; noun (name) in genitive case.

Diagnosis.

Myrmarachne mixiaoqii sp. nov. can be easily distinguished from other congeners by the presence of a cluster of cymbial macro-setae above the dRTA, and the pair of bag-shaped structures below the epigynal hood, vs. the absence of a cluster of cymbial macro-setae above the dRTA and without similar bag-shaped structures below the epigynal hood in congeners presently known (see Metzner 2023).

Description.

Male (Figs 11 , 12E-G, I ). Total length 5.02. Carapace 2.25 long, 1.34 wide. Abdomen 2.60 long, 1.23 wide. Clypeus 0.09 high. Eye sizes and inter-distances: AME 0.43, ALE 0.22, PLE 0.20, AERW 1.26, PERW 1.30, EFL 0.94. Legs: I 4.47 (1.33, 0.68, 1.30, 0.73, 0.43), II 3.29 (1.00, 0.58, 0.83, 0.55, 0.33), III 3.38 (1.00, 0.50, 0.80, 0.75, 0.33), IV 4.71 (1.40, 0.63, 1.25, 1.08, 0.35). Carapace dark yellow, with elevated cephalic region bearing pair of irregular dark patches behind AMEs, and medially raised thorax. Chelicerae elongated, longer than carapace, each with four promarginal and eight retromarginal teeth. Endites yellow, elongated. Labium slightly darker than endites. Sternum narrow, ~ 3 × longer than wide. Legs yellow to brown, with one ventral spine on patellae I, four and two pairs of ventral spines on tibiae I and metatarsi I, respectively. Abdomen elongated, almost gourd-shaped, constricted at anterior 1/3, dorsum yellow to red-brown, covered wholly by scutum; venter pale to brown. Palp (Fig. 11A-D ). Tibia wider than long in ventral view; dRTA bifurcated, with platelike ventral ramus and short, digitiform dorsal ramus; cymbium almost oval, bearing cluster of medio-retrolateral macro-setae above the dRTA; bulb almost round, flat, embolus long, coiled more than two coils, with pointed tip reaches the cymbial tip.

Female (Fig. 12A-D, H ). Total length 6.00. Carapace 2.46 long, 1.35 wide. Abdomen 3.08 long, 1.58 wide. Clypeus 0.10 high. Eye sizes and inter-distances: AME 0.44, ALE 0.22, PLE 0.20, AERW 1.27, PERW 1.35, EFL 1.01. Legs: I 4.09 (1.25, 0.63, 1.18, 0.60, 0.43), II 3.17 (0.98, 0.53, 0.80, 0.53, 0.33), III 3.47 (1.00, 0.48, 0.83, 0.78, 0.38), IV 4.97 (1.48, 0.63, 1.33, 1.13, 0.40). Habitus (Fig. 12H ) similar to that of male except with much shorter chelicerae each with five promarginal and nine or ten retromarginal teeth, without dorsal scutum on abdomen, and with six pairs of ventral spines on tibiae I. Epigyne (Fig. 12A-D ). Longer than wide, with tube-shaped epigynal hood fused with pair of bag-shaped structures posteriorly; atria paired, with invert L-shaped lateral ridges; copulatory ducts long, forming complex paths with three distal coils; spermathecae almost spherical, anteriorly located, separated from each other slightly less than their diameter.

Distribution.

Only known from the type locality in Hainan Island, China.

Figures

Figure 11. Male palp of Myrmarachne mixiaoqii sp. nov., holotype A, C ventral B retrolateral D dorsal. Scale bars: 0.1 mm.

Figure 12. Myrmarachne mixiaoqii sp. nov., male holotype and female paratype A, C epigyne, ventral B, D vulva, dorsal E holotype habitus, dorsal F ditto, lateral G ditto, ventral H female paratype habitus, dorsal I holotype chelicera, posterior. Scale bars: 0.1 mm (A-D); 0.2 mm (I); 1.0 mm (E-H).