Mimetus parvulus Sankaran, Sudhin & Sen, 2024
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publication ID |
https://doi.org/ 10.11646/zootaxa.5496.4.5 |
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publication LSID |
lsid:zoobank.org:pub:285BF97A-40EA-4AA6-89A0-7F7F9FC258E2 |
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DOI |
https://doi.org/10.5281/zenodo.13617700 |
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persistent identifier |
https://treatment.plazi.org/id/03CA87CB-FF81-577D-13E0-FBCD86164F90 |
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treatment provided by |
Plazi |
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scientific name |
Mimetus parvulus Sankaran, Sudhin & Sen, 2024 |
| status |
sp. nov. |
Mimetus parvulus Sankaran, Sudhin & Sen, 2024 n. sp.
Figs 1–2 View FIGURE 1 View FIGURE 2
Etymology. The species epithet is an adjective, derived from the Latin word for small ( parvulus ) and refers to the short copulatory ducts of the new species ( Fig. 2B View FIGURE 2 ).
Type material. Holotype ♀ (ZSI/ WGRC /IR.-INV.26948), INDIA: Kerala: Ernakulam, Illithodu (10°11’55.94’’N, 76°33’00.57’’E; 24 m), 25 February 2014, leg. M.S. Pradeep, from plant twig, by hand. GoogleMaps
Diagnosis. Females of M. parvulus n. sp. are similar to the females of M. echinatus Wang, 1990 from China as both share epigyne with large scape and large posterior plate, in addition to long fertilization ducts, but can be separated from the latter species by not very elongated prosoma (vs. elongated in M. echinatus ), triangular opisthosoma (vs. subcircular in M. echinatus ), dorsum of opisthosoma with conspicuous tubercles (vs. less evident in M. echinatus ), large median plate of epigyne (vs. small in M. echinatus ), triangular scape (vs. lingulate in M. echinatus ), round spermathecae (vs. oval in M. echinatus ), and straight and parallel fertilization ducts (vs. divergent and curved in M. echinatus ) (e.g., Figs 1A–B, H View FIGURE 1 , 2A–B View FIGURE 2 ; Zeng et al. 2016: figs 3, 4B–C). Females of M. parvulus n. sp. can be readily distinguished from the females of M. indicus by arch-shaped anterior epigynal margin (vs. Mshaped in M. indicus ), and epigyne with scape (vs. absent in M. indicus ) (e.g., Figs 1H View FIGURE 1 , 2A View FIGURE 2 ; Brignoli 1972: figs 25, 27).
Description. Female in alcohol (holotype; Figs 1A–G View FIGURE 1 ): carapace pale creamy rose, with dense gray-black mottling medially ( Figs 1A–B View FIGURE 1 ); eye field, clypeus, endites, labium, sternum, leg and palp segments pale yellow-brown; black mottling on clypeus, endites, labium and sternum; dark brown annulations, patches and spots on leg and palp segments; chelicerae brown; opisthosoma dull gray-white, with broad pale gray patch bordered on both sides by chalk-white spots dorsomedially ( Figs 1A–B View FIGURE 1 ); spinnerets gray. Carapace glossy; cephalic region with three longitudinal rows of erect spine-like setae ( Figs 1A–B View FIGURE 1 ). Lateral and anterior median eyes on raised humps; lateral eyes contiguous ( Fig. 1D View FIGURE 1 ). Chelicerae elongate, distally with two macrosetae cross forming an ‘X’ ( Figs 1C, E View FIGURE 1 ; arrow 1); promargin with single row of 10 peg teeth, retromargin with single, tiny true tooth ( Figs 1E–F View FIGURE 1 ; arrow 2). Sternum longer than wide, distally narrow, extending up to coxae IV, fused with labium, covered with scattered black erect setae ( Fig. 1G View FIGURE 1 ). Opisthosoma roughly triangular ( Fig. 1A View FIGURE 1 ); dorsum and sides with numerous tubercles; posteromedian tubercles on dorsal opisthosoma large, bearing a single erect seta ( Figs 1A–B View FIGURE 1 ). Prolateral side of tibiae and metatarsi I–II with raptorial spines/modified setae in between normal spines: tibia I with 25, II with 20, metatarsus I with 42, II with 30. Body length 4.21. Carapace 1.94 long, 1.77 wide. Opisthosoma 2.27 long, 2.04 wide. Eye sizes and interdistances: ALE 0.12, AME 0.14, PLE 0.10, PME 0.10; AME–ALE 0.13, AME–AME 0.11, AME–PME 0.20, PME–PLE 0.20, PME–PME 0.08. Clypeus height at AMEs 0.15, at ALEs 0.20. Chelicerae 1.11 long. Length of palp and legs: palp 2.55 [0.71, 0.38, 0.57, 0.89], I 12.54 [3.66, 1.04, 3.41, 3.18, 1.25], II 9.75 [3.05, 0.86, 2.40, 2.38, 1.06], III 5.46 [1.79, 0.63, 1.15, 1.12, 0.77], IV 7.07 [2.39, 0.67, 1.73, 1.48, 0.80]. Leg formula: 1243. Spination of palp: femur do 2 rlv 1, patella do 2, tibia pl 1 do 1 rl 1, tarsus pl 2 pld 1 plv 1 do 1 rl 1 rlv 3 v 1; legs: femur I pld 1 do 9 rld 2, II pld 1 do 9 rld 1, III pld 1 do 6 rld 1, IV pld 1 do 5 rld 1; patellae I–IV do 2; tibia I pl 11 do 7 rl 6, II pl 6 do 4 rl 2, III–IV pl 1 plv 2 do 1 rl 1 rld 1; metatarsus I pl 6 do 4 rl 5, II pl 4 do 1 rl 4, III pl 1 pld 2 do 1 rld 1, IV pl 1 pld 2 do 1 rld 2; tarsi I–IV spineless. Genitalia ( Figs 1H View FIGURE 1 , 2A–B View FIGURE 2 ): epigyne slightly longer than wide, with arched anterior margin, without atrium, with broad median and posterior plates of different shapes and a median broad triangular scape ( Figs 1H View FIGURE 1 , 2A View FIGURE 2 ). Copulatory openings indistinct, being covered by the median epigynal plate. Copulatory ducts short, wide, sclerotized ( Fig. 2B View FIGURE 2 ). Spermathecae roundish, medially fused ( Fig. 2B View FIGURE 2 ). Fertilization ducts long, parallel, and straight ( Fig. 2B View FIGURE 2 ).
Male. Unknown.
Distribution. Known only from the type locality ( Fig. 8 View FIGURE 8 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.