Research Article |
Corresponding author: Zhanqi Chen ( chenzhanqi@xtbg.ac.cn ) Corresponding author: Jie Liu ( sparassidae@aliyun.com ) Academic editor: Gergin Blagoev
© 2022 Zhongwei Deng, Ingi Agnarsson, Zhanqi Chen, Jie Liu.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Deng Z, Agnarsson I, Chen Z, Liu J (2022) Meotipa species (Araneae, Theridiidae) from China. ZooKeys 1082: 153-178. https://doi.org/10.3897/zookeys.1082.75400
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In an ongoing effort to expand knowledge of the Chinese cobweb spider fauna (Theridiidae), the genus Meotipa Simon, 1894 is reviewed. Two new species are described, Meotipa pseudopicturata sp. nov., Meotipa striata sp. nov., and five known species are redescribed: Meotipa argyrodiformis (Yaginuma, 1952), Meotipa pulcherrima (Mello-Leitão, 1917), Meotipa picturata Simon, 1895, Meotipa spiniventris (O. Pickard-Cambridge, 1869), and Meotipa vesiculosa Simon, 1895.
Cobweb spider, comb-footed spider, flattened black spines, long-legged theridiid spiders, new species, taxonomy
Meotipa Simon, 1895 is an enigmatic and taxonomically poorly understood theridiid genus, in part because it was synonymized with the much larger and more widespread genus Chrysso by
In the past two years, a series of surveys for Chinese theridiid spiders were conducted by the colleagues of Hubei University in China and yielded numerous new species. This is our second paper on Chinese cobweb spiders with the aim to review the Chinese Meotipa spiders and includes two new species, one new record for Hunan, and four known species (
In the field, we collected cobweb spiders by using visual searching and beating vegetation. We attempted to take photographs of every species, alive, in the field, and webs of all species encountered in web were photographed. All specimens were preserved in 99% ethanol and examined with an Olympus SZX16 stereomicroscope; details were further investigated with an Olympus BX51 compound microscope. Male palps and female genitalia were examined and their photographs taken after dissection from the spider bodies. The epigynum was cleared with Proteinase K. Habitus and photographs were obtained using a Leica 205C digital microscope. We added some key marginal lines for genitalia photographs using the Apple pencil (2nd generation) and edited the photographs in Adobe Photoshop 2020. Leg measurements are shown as: total length (femur, patella, tibia, metatarsus, tarsus). The terminology used in text and figure legends, and palpal homologies follow
ALE anterior lateral eyes;
AME anterior median eyes;
C conductor;
CD copulatory duct;
CO copulatory opening;
E embolus;
FD fertilization duct;
MA median apophysis;
PE posterior eyes;
PLE posterior lateral eyes;
PME posterior median eyes;
S spermathecae;
SE stuck emboli.
ST subtegulum;
T tegulum;
Family Theridiidae Sundevall, 1833
Female of Meotipa differs from all other theridiids by the conspicuous flattened black spines on the abdomen and/or legs. Therefore, they are often referred to as spiny theridiids. Meotipa males are significantly smaller than females. The male palp of Meotipa can be distinguished from other theridiids by the spoon-shaped conductor and embolus being thin and short, with the straight base, completely surrounded by the spoon-shaped conductor or the tip of embolus, which is opposite to the conductor (except Meotipa bituberculata, see
Meotipa andamanensis (Tikader, 1977) (♀) | India (Andaman Is.) |
Meotipa argyrodiformis (Yaginuma, 1952) (♂♀) | China, Japan, Philippines, India |
Meotipa bituberculata Deeleman-Reinhold, 2009 (♂♀) | Indonesia |
Meotipa capacifaba Li, Liu, Xu & Yin, 2020 (♂♀) | China |
Meotipa impatiens Deeleman-Reinhold, 2009 (♂♀) | Malaysia, Indonesia |
Meotipa luoqiae Lin & Li, 2021 (♂) | China |
Meotipa makiling (Barrion-Dupo & Barrion, 2015) (♀) | Philippines |
Meotipa menglun Lin & Li, 2021 (♂) | China |
Meotipa multuma Murthappa, Malamel, Prajapati, Sebastian & Venkateshwarlu, 2017 (♂♀) | India |
Meotipa pallida Deeleman-Reinhold, 2009 (♀) | Indonesia |
Meotipa picturata Simon, 1895 (♂♀) | India, Thailand, Laos, Indonesia |
Meotipa pulcherrima (Mello-Leitão, 1917) (♂♀) | tropical Africa, introduced to the Americas, Papua New Guinea, China, Korea, Japan, and Pacific Islands |
Meotipa sahyadri Kulkarni, Vartak, Deshpande & Halali, 2017 (♂♀) | India |
Meotipa spiniventris (O. Pickard-Cambridge, 1869) (♂♀) | Sri Lanka to Taiwan, China, Japan, introduced to the Netherlands |
Meotipa thalerorum Deeleman-Reinhold, 2009 (♂♀) | Malaysia and Indonesia |
Meotipa ultapani Basumatary & Brahma, 2019 (♀) | India |
Meotipa vesiculosa Simon, 1895 (♂♀) | China, Vietnam to Japan, Philippines, Indonesia |
Meotipa zhengguoi Lin & Li, 2021 (♂) | China |
Ariamnes argyrodiformis Yaginuma, 1952: 14, figs 1–6 (description of female).
Topo argyrodiformis Yaginuma, 1955: 16 (transferred from Ariamnes, at the time in synonymy with Argyrodes).
Chrysso argyrodiformis
Yaginuma, 1965: 35 (transferred from Topo, at the time in synonymy with Thwaitesia); Yaginuma 1986: 45, fig. 24.3 (female, description of male); Chikuni 1989: 32, fig. 14 (male and female); Chen and Gao 1990: 93, fig. 116 (female);
Meotipa argyrodiformis Yoshida, 2009: 378, figs 208–210 (transferred from Chrysso).
Hunan Province: 9♀, Changsha City, Yuelu Mountain Scenic Area (28.19°N, 112.94°E, 210 m), 12 August 2018, Z.C. Li & Z.W. Deng leg. (
Meotipa argyrodiformis is similar to M. pulcherrima (Fig.
Meotipa argyrodiformis (Yaginuma, 1952) A–C female habitus (some flattened black spines on the abdomen and legs were broken off during photography) (A dorsal B prolateral C ventral). D–H epigynum (D ventral, on the body E, F in alcohol E ventral F dorsal G, H in gum arabic G ventral H dorsal). Scale bars: 1 mm (A–C); 0.1 mm (D–H). Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecae.
Female. Total length 5.20; Prosoma length 1.20, width (at middle) 0.81, height (at middle) 0.88; Opisthosoma length 4.05, width (at middle) 1.97, height (at middle) 2.46; Eye diameters: ALE 0.07, AME 0.07, PLE 0.07, PME 0.07; Eye interdistances: AME–AME 0.05, ALE–ALE 0.15, PLE–ALE contiguous, PLE–PLE 0.22, PME–PME 0.07, PME–PLE 0.07, AME–ALE 0.05; Clypeus height (at middle) 0.38, width (at middle) 0.16; Measurements of legs: Leg I (right) 11.18 [4.93, 0.84, 2.36, 2.34, 0.71], II (right) 6.72 [1.85, 0.49, 1.50, 2.17, 0.71], III (right) 4.61 [1.44, 0.38, 0.85, 1.42, 0.52], IV (right) 9.27 [2.80, 0.59, 2.69, 2.43, 0.76]. Carapace rather ovate with V-shaped longitudinal fovea, cephalic area short and narrow, thoracic area widest between coxae II and III (Fig.
Male. Not collected.
China (Anhui, Fujian, Hunan, Liaoning, Shaanxi, Sichuan, Taiwan, Zhejiang), Japan, Philippines, India.
Argyrodes pulcherrimus Mello-Leitão, 1917: 86, figs 7, 8 (description of female).
Meotipa clementinae Petrunkevitch, 1930: 212, figs 61, 62 (description of female); Schmidt 1956a: 30, fig. 6 (description of male); Schmidt, 1956b: 240, fig. 1 (female).
Argyrodes elevatus Exline and Levi, 1962: 135 (synonymy, rejected by Levi 1967a).
Chrysso clementinae Levi, 1962: 231, figs 71–75 (male and female); Müller 1992: 99, figs 5, 6 (female).
Chrysso pulcherrima
Levi, 1967a: 26 (removed female from synonymy of Argyrodes elevatus, synonymy of male); Levi 1967b: 182, figs 28–31 (male and female);
Chrysso mussau Chrysanthus, 1975: 48, figs 174–177 (descriptions of male and female).
Meotipa pulcherrima Yoshida, 2009: 378, figs 211–213 (transferred from Chrysso).
The taxonomy of M. pulcherrima, presumed to be widely introduced, including to its type locality in Brazil, requires further scrutiny. Our specimens are not identical to the given type illustrations, and further variation appears globally evident. However, solving the global taxonomy of M. pulcherrima is outside the scope of this manuscript and required dedicated research.
Hunan Province: 7♀, Zhangjiajie City, Sangzhi County, Quanyushan Leisure Park (29.48°N, 110.16°E, 370 m), 5 May 2018, F.X. Liu & Z.C. Li leg. (
Meotipa pulcherrima is similar to M. capacifaba Li, Liu, Xu & Yin, 2020 (see
Meotipa pulcherrima (Mello-Leitão, 1917) A–C female habitus (flattened black spines on the abdomen and legs were broken off during photography) (A dorsal B prolateral C ventral). D–H epigynum (D ventral, on the body, and the arrow points to tongue-shaped apophysis E, F in alcohol E ventral F dorsal G, H in gum arabic G ventral H dorsal). Scale bars: 1 mm (A–C); 0.1 mm (D–H). Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecae.
Female. Total length 3.03; Prosoma length 0.96, width (at middle) 0.90, height (at middle) 0.61; Opisthosoma length 2.07, width (at middle) 1.27, height (at middle) 1.89; Eye diameters: ALE 0.07, AME 0.09, PLE 0.08, PME 0.09; Eye interdistances: AME–AME 0.09, ALE–ALE 0.55, PLE–ALE contiguous, PLE–PLE 0.30, PME–PME 0.08, PME–PLE 0.11, AME–ALE 0.02; Clypeus height (at middle) 0.21, width (at middle) 0.60; Measurements of legs: Leg I (right) 8.3 [2.59, 0.42, 2.34, 2.16, 0.79], II (right) 5.42 [2.03, 0.40, 1.04, 1.43, 0.52], III (right) 3.73 [1.49, 0.24, 0.85, 0.73, 0.42], IV (right) 6.33 [2.40, 0.39, 0.90, 2.00, 0.64]. Carapace with a central reddish brown longitudinal band; cephalic area relatively long and narrow; clypeus bulged outward (Fig.
Male. Not collected.
China (Fujian; Guangxi; Hainan; Hunan, newly recorded; Taiwan; Zhejiang), Japan, Korea, Pacific Is., Papua New Guinea; also tropical Africa and widespread across the Americas (after
Although we did not examine the female holotype of M. pulcherrima, the triangular abdomen with caudal region extending upwardly beyond spinnerets, the short and swollen copulatory ducts, and the sphere-shaped spermathecae all indicate our specimens belong to M. pulcherrima according to the original, albeit simple illustrations by
Meotipa picturata Simon, 1895 A–C female habitus (A dorsal B prolateral C ventral). D–H epigynum (D ventral, on the body E, F in the alcohol E ventral F dorsal G, H in gum arabic G ventral H dorsal). Scale bars: 1 mm (A–C); 0.1 mm (D–H). Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecae.
Meotipa picturata
Simon, 1894: 519 (nomen nudum); Simon, 1895: 133 (description of female); Levi and
Yunnan Province: 1♀, Mengla County, Menlun Town, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences (21.92°N, 101.26°E, 550 m), 22 November 2019, J. Chen, J. Liu, Z.C. Li & B. Liang leg. (
Meotipa picturata is similar to M. sahyadri (
Female. Total length 3.78; Prosoma length 1.31, width (at middle) 0.94, height (at middle) 0.47; Opisthosoma length 2.48, width (at middle) 1.17, height (at middle) 1.94; Eye diameters: ALE 0.08, AME 0.08, PLE 0.08, PME 0.08; Eye interdistances: AME–AME 0.06, ALE–ALE 0.15, PLE–ALE contiguous, PLE–PLE 0.19, PME–PME 0.09, PME–PLE 0.05, AME–ALE 0.04; Clypeus height (at middle) 0.31, width (at middle) 0.20; Measurements of legs: Leg I (right) 13.96 [4.74, 0.49, 3.02, 4.71, 1.00], II (right) 8.88 [3.02, 0.51, 1.69, 2.86, 0.80], III (right) 7.87 [2.28, 0.26, 0.94, 1.53, 2.86], IV (right) 12.19 [4.14, 0.32, 2.96, 3.96, 0.81]. Prosoma glabrous; clypeus narrow. Carapace with a central arrowed-shaped marking forward; fovea broad, smooth with distinct depression (Fig.
Male. Not collected.
China (Yunnan). New country and province record (Fig.
Theridion spiniventre O. Pickard-Cambridge, 1869: 384, pl. 12, figs 52–56 (description of male); Hammen 1949: 76, figs 1–3 (male and female); Yoshida 1977: 9, figs 1–4 (male and female); Song 1987: 128, fig. 89 (male and female).
Theridion buitenzorgi Strand, 1907: 412 (female).
Chrysso spiniventre
Yaginuma, 1986: 46, fig. 24–5 (transferred from Theridion);
Meotipa spiniventris Yoshida, 2009: 378, figs 214–216 (transferred from Chrysso).
Yunnan Province: 1♀, Mengla County, Menlun Town, Xishuangbanna Botanical Garden, Chinese Academy of Sciences (21.93°N, 101.25°E, 570 m), 22 March 2018, F.X. Liu & Z.C. Li leg. (
Meotipa spiniventris is similar to M. multuma
Meotipa spiniventris (O. Pickard-Cambridge, 1869) A–C female habitus (flattened black spines on the abdomen and legs were broken off during taking photographs) (A dorsal B Prolateral C ventral). D–H epigynum (D ventral, on the body E, F in the alcohol E ventral F dorsal G, H in gum arabic G ventral H dorsal). Scale bars: 1 mm (A–C); 0.1 mm (D–H). Abbreviations: CO = copulatory opening, CD = copulatory duct, FD = fertilization duct, S = spermathecae.
Meotipa spiniventris (O. Pickard-Cambridge, 1869) A–B male habitus (flattened black spines on the abdomen were absolutly absent) (A dorsal B prolateral). C–H pedipalp (C–E in the alcohol C prolateral D ventral E retrolateral F–H in gum arabic F prolateral G ventral H retrolateral). Scale bars: 1 mm (A–C); 0.1 mm (D–I). Abbreviations: E = embolus, MA = median apophysis, ST = subtegulum, T = tegulum.
Female. Total length 2.23; Prosoma length 1.03, width (at middle) 0.71, height (at middle) 0.51; Opisthosoma length 1.20, width (at middle) 0.81, height (at middle) 1.05; Eye diameters: ALE 0.06, AME 0.07, PLE 0.06, PME 0.07; Eye interdistances: AME–AME 0.06, ALE–ALE 0.11, PLE–ALE contiguous, PLE–PLE 0.17, PME–PME 0.07, PME–PLE 0.05, AME–ALE 0.02; Clypeus height (at middle) 0.15, width (at middle) 0.13; Measurements of legs: Leg I (right) 9.19 [2.95, 0.47, 2.09, 2.93, 0.75], II (right) 4.83 [1.77, 0.36, 1.09, 1.16, 0.45], III (right) 2.98 [1.20, 0.22, 0.50, 0.72, 0.34], IV (right) 6.57 [2.21, 0.37, 1.21, 1.29, 1.49]. Carapace rhomboid with narrow and bar-shaped longitudinal fovea, glabrous; cephalic area relatively long and broad; clypeus slightly elevated. Eye field raised, all eyes in two rows and nearly uniform in size (Fig.
Male. Total length 1.82; Prosoma length 0.80, width (at middle) 0.70, height (at middle) 0.54; Opisthosoma length 1.02, width (at middle) 0.93, height (at middle) 0.83; Eye diameters: ALE 0.06, AME 0.08, PLE 0.07, PME 0.07; Eye interdistances: AME–AME 0.08, ALE–ALE 0.15, PLE–ALE contiguous, PLE–PLE 0.19, PME–PME 0.07, PME–PLE 0.06, AME–ALE 0.04; Clypeus height (at middle) 0.19, width (at middle) 0.15; Measurements of legs: Leg I (right) 11.08 [3.36, 0.44, 2.83, 3.52, 0.93], II (right) 6.1 [1.62, 0.36, 1.54, 1.87, 0.71], III (right) 3.55 [1.24, 0.21, 0.74, 0.97, 0.39], IV (right) 7.87 [2.92, 0.38, 2.08, 1.88, 0.61]. Like the female, except by the following. Dwarf in size compared to female (4/5 size of female), without characteristic lanceolate spines. Prosoma with distinct black streaks medially, and a wide red streak in the front of the black streaks; clypeus slightly bulged; eye field wide, elevated, with two long hairs in the middle of AME, white appearance except bulged out black anterior medians (Fig.
China (Jiangxi; Hainan, newly recorded; Hubei, newly recorded; Sichuan, newly recorded; Yunnan, newly recorded; Taiwan), Japan, Netherlands, Sri Lanka.
Meotipa vesiculosa
Simon, 1894: 514, figs 522, 527 (nomen nudum); Simon 1895: 134 (description of female);
Chrysso vesiculosa
Levi, 1962: 232, figs 80, 81 (female); Yaginuma 1986: 45, fig. 24–1 (female); Chikuni 1989: 32, fig. 15 (female);
Chrysso jianglensis
Zhu & Song, in Song et al. 1993: 857, fig. 9A–C (description of male);
Yunnan Province: 4♀, Mengla County, Menlun Town, Xishuangbanna Botanical Garden, Chinese Academy of Sciences (21.93°N, 101.25°E, 570 m), 22 March 2018, F.X. Liu & Z.C. Li leg. (
This species can be distinguished from other Meotipa species by the combination of following characters: (1) atrium large, with shallow heart-shaped depression (Fig.
Female. Cephalothorax pale yellow with a red-brown central stripe; cephalic area relatively long and broad; clypeus narrow, bulged out. Eyes in two rows and nearly uniform in size, strongly recurved; AME separation is greater than AME-ALE, and PE are arranged at almost equal distances; AME black, PME eyes pearly white (Fig.
Meotipa vesiculosa Simon, 1895 A–C female habitus (A dorsal B prolateral C ventral). D–H epigynum (D ventral, on the body E, F in the alcohol E ventral F dorsal G, H in gum arabic G ventral H dorsal). Scale bars: 1 mm (A–C); 0.1 mm (D–H). Abbreviations: CO = copulatory opening, CD = copulatory duct, FD = fertilization duct, S = spermathecae.
Male. Not collected.
China (Fujian; Guangxi; Hunan; Taiwan; Yunnan, newly recorded), Vietnam to Japan, Philippines, Indonesia.
Holotype
female (
The species epithet refers to its similarity to Meotipa picturata Simon, 1895.
Meotipa pseudopicturata sp. nov. is similar to M. picturata (see
Meotipa pseudopicturata sp. nov. A–C female habitus (flattened black spines on the abdomen and legs were broken off during taking photographs) (A dorsal B prolateral C ventral). D–H epigynum (D ventral, on the body E, F in the alcohol E ventral F dorsal G, H in gum arabic G ventral H dorsal). Scale bars: 1 mm (A–C); 0.1 mm (D–H). Abbreviations: CO = copulatory opening, CD = copulatory duct, FD = fertilization duct, S = spermathecae.
Female (holotype). Total length 3.31; Prosoma length 1.08, width (at middle) 1.11, height (at middle) 0.69; Opisthosoma length 2.26, width (at middle) 0.91, height (at middle) 1.83; Eye diameters: ALE 0.07, AME 0.08, PLE 0.08, PME 0.07; Eye interdistances: AME–AME 0.05, ALE–ALE 0.10, PLE–ALE contiguous, PLE–PLE 0.26, PME–PME 0.10, PME–PLE 0.08, AME–ALE 0.03; Clypeus height (at middle) 0.43, width (at middle) 0.15; Measurements of legs: Leg I (right) 12.44 [4.23, 0.54, 2.58, 4.20, 0,89], II (right) 8.11 [2.73, 0.44, 1.65, 2.55, 0.74], III (right) 4.7 [1.68, 0.31, 0.99, 1.28, 0.44], IV (right) 10.91 [4.06, 0.38, 2.42, 3.44, 0.61]. Prosoma anteriorly and posteriorly truncated, medially flat, glabrous; cephalic area elevated. Carapace with black stripes, medially radiating streaks; fovea broad, smooth with distinct depression and irregular ridges (Fig.
Male. Unknown.
China (Yunnan) (Fig.
Holotype
female (
The species epithet refers to the black and yellow stripes on the abdomen of the specimen.
The new species is similar to M. spiniventris (Figs
Female (holotype). Total length 2.41; Prosoma length 0.96, width (at middle) 0.83, height (at middle) 0.61; Opisthosoma length 1.4, width (at middle) 1.10, height (at middle) 1.50; Eye diameters: ALE 0.07, AME 0.08, PLE 0.08, PME 0.08; Eye interdistances: AME–AME 0.03, ALE–ALE 0.23, PLE–ALE contiguous, PLE–PLE 0.28, PME–PME 0.08, PME–PLE 0.06, AME–ALE 0.03; Clypeus height (at middle) 0.26, width (at middle) 0,14; Measurements of legs: Leg I (right) 9.30 [2.80, 0.45, 2.12, 3.01, 0.92], II (right) 5.85 [1.96, 0.36, 1.21, 1.51, 0.81], III (right) 4.85 [1.40, 0.22, 0.80, 1.39, 0.50], IV (right) 6.86 [2.50, 0.40, 1.42, 1.87, 0.67]. Carapace rather ovate with bar-shaped longitudinal narrow fovea; cephalic area relatively short and narrow. All eyes uniform in size, strongly recurved; dark AME surrounded by red-brown rings; PME pearly white surrounded by black rings (Fig.
Meotipa striata sp. nov. A–C female habitus (some flattened black spines on the abdomen and legs were broken off during taking photographs) (A dorsal B prolateral C ventral). D–H epigynum (D ventral, on the body E, F in the alcohol E ventral F dorsal G, H in gum arabic G ventral H dorsal). Scale bars: 1 mm (A–C); 0.1 mm (D–H). Abbreviations: CO = copulatory opening, CD = copulatory duct, FD = fertilization duct, S = spermathecae, SE = stuck emboli.
Male. Unknown.
Meotipa Simon, 1895 is a relatively small genus of the family Theridiidae, totaling 20 species globally including two new species reported here. Most species are distributed in East Asia (eleven species in China, three species in Japan and Korea), Southeast Asia (eight species in Brunei, Indonesia, Laos, Malaysia, Myanmar, Thailand, and Vietnam), and South Asia (five species in India). Only M. pulcherrima is found outside Asia: it is widely distributed in tropical Africa and is presumed to have been introduced to Papua New Guinea, China, Korea, Japan, and the Pacific islands, and the Americas, including its type locality in Brazil (see Note under M. pulcherrima). Meotipa spiders prefer to inhabit the underside of leaves typically decorated by lichens and fungi. Against this background, the black, white, and red patterns on the body and the brushes of black scale-like spines on legs and abdomen blur their outline and enhance their disguise (
It is difficult to speculate on Meotipa interrelationships without a phylogeny, but some morphological observation may serve to indicate certain relationships: 1. Abdomen bearing two pairs of humps on dorso-lateral sides is only present in M. impatiens, M. ultapani, and M. vesiculosa; 2. A rod-shaped projection in the epigynum is found in M. picturata M. sahyadri, and M. pseudopicturata sp. nov.; 3. The copulatory ducts are spherical in M. capacifaba and M. pulcherrima, but distinctly curved in M. capacifaba and M. pulcherrima; 4. The conductor is spoon-shaped in M. argyrodiformis, M. menglun, M. picturata, M. sahyadri, and M. vesiculosa. These characters have minimum overlap (M. vesiculosa may belong to two of the groups) and might suggest the following species groups and relationships: (M. impatiens, M. ultapani, and M. vesiculosa),((M. picturata, M. sahyadri, and M. pseudopicturata) M. argyrodiformis)), (M. capacifaba and M. pulcherrima). However, whether these characters actually reflect relationships remains to be seen upon the systematic collection of phylogenetic data. In addition, we must consider that the two new species (only female) covered in the current paper were collected from same region (Mengla County, Xishuangbanna Dai Autonomous Prefecture) with three known species (only males of M. luoqiae, M. menglun, M. zhengguoi) recently reported (
Meotipa clearly belongs to the subfamily Theridiinae based both on molecular phylogenetic data (
The manuscript benefited from comments by Gergin Blagoev (Centre for Biodiversity Genomics, University of Guelph, Canada), Nathalie Yonow (Swansea University, Wales), and two anonymous reviewers. This study was financially supported by CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences (19CAS-TFE-3), the National Natural Sciences Foundation of China (NSFC-31573236/31273268/31772420) and National Science and Technology Fundamental Resources Investigation Program of China (Grant No. 2019FY101800).