Merizocera betong Li, 2020
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publication ID |
https://dx.doi.org/10.3897/zookeys.961.53058 |
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publication LSID |
lsid:zoobank.org:pub:B5627BFE-56A2-42B3-B3A5-96BAE07724F4 |
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persistent identifier |
https://treatment.plazi.org/id/AC63AF3E-1F1B-4A27-BBE4-0AF87A7D831E |
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taxon LSID |
lsid:zoobank.org:act:AC63AF3E-1F1B-4A27-BBE4-0AF87A7D831E |
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treatment provided by |
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scientific name |
Merizocera betong Li |
| status |
sp. nov. |
Merizocera betong Li sp. nov. Figures 3 View Figure 3 , 4 View Figure 4 , 54 View Figure 54
Type material.
Holotype: male (IZCAS), Ban Bo Nam Ron Village (5°49.96'N, 101°4.08'E, elevation 384 m), Betong District, Yala, Thailand, 24 October 2015, P. Wongprom leg. Paratypes: 1 male and 3 females (IZCAS), same data as holotype.
Etymology.
The specific name refers to the type locality; noun in apposition.
Diagnosis.
Males of M. betong sp. nov. resemble those of M. ranong sp. nov. and M. yuxi sp. nov., but can be distinguished by the smooth distally arising embolus (Fig. 3B View Figure 3 ) (vs. the crinkly distally arising embolus in M. ranong sp. nov. (Fig. 31B View Figure 31 ) and M. yuxi sp. nov. (Fig. 50B View Figure 50 )), slender pyriform bulb (Fig. 3B View Figure 3 ) (vs. swollen pyriform bulb in M. ranong sp. nov. (Fig. 31B View Figure 31 ) and M. yuxi sp. nov. (Fig. 50B View Figure 50 )), pointed embolus tip (Fig. 3B View Figure 3 ) (vs. lamina-like embolus tip in M. ranong sp. nov. (Fig. 31B View Figure 31 ) and flattened tip in M. yuxi sp. nov. (Fig. 50B View Figure 50 )), embolus stalk 1/2 the length of tegular (Fig. 3B View Figure 3 ) (vs. embolus stalk 1/3 length of tegular in M. ranong sp. nov. (Fig. 31B View Figure 31 ), and similar in length in M. yuxi sp. nov. (Fig. 50B View Figure 50 )), cymbial protrusion half the length of tegular in M. betong sp. nov. (Fig. 3D View Figure 3 ) and M. ranong sp. nov. (Fig. 31D View Figure 31 ) (vs. cymbial protrusion similar length with tegular in M. yuxi sp. nov. (Fig. 50D View Figure 50 )). These species appear similar to those in the septentrionalis group of the genus Psiloderces , but can be distinguished by the more distinct cymbial protrusion (longer than the bulb or at least half the bulb’s length) (vs. cymbial protrusion inconspicuous or shorter than half the length of bulb in Psiloderces ). The female can be distinguished by having two pairs of stalked spermathecae each bearing a globose distal part (Fig. 4A View Figure 4 ) (vs. one pair of posteriorly directed tubular spermathecae in M. ranong sp. nov. (Fig. 32A View Figure 32 ) and two pairs of tubular spermathecae in M. yuxi sp. nov. (Fig. 51A View Figure 51 )).
Description.
Male (holotype). Total length 1.33; carapace 0.56 long, 0.51 wide; abdomen 0.71 long, 0.40 wide. Carapace circular, brownish, with dark brown marks laterally and dark brown median stripe (Fig. 4C View Figure 4 ). Fovea shallow. Thoracic region distinctly elevated medially. Clypeus, labium, and sternum dark brown. Abdomen slightly elongated, dark brown (Fig. 4E View Figure 4 ). Legs brown; measurements: I 6.85 (1.84, 0.19, 2.13, 1.86, 0.83), II 5.05 (1.38, 0.19, 1.53, 1.28, 0.67), III 3.79 (1.04, 0.18, 1.11, 0.94, 0.52), IV 5.50 (1.48, 0.18, 1.74, 1.42, 0.68). Palp (Fig. 3A-D View Figure 3 ): femur slender, three times longer than patella; patella not swollen; tibia half as long as femur; cymbium with distal protrusion, half as long as femur, length ratio of dorsal protrusion and cymbium 1.45; bulb pale yellow, pyriform with embolus arising distally; embolus stalk slightly bent with pointed embolus tip, embolus approx. half the length of tegular.
Female (paratype). General features and colouration similar to those of the male (Fig. 4D, E View Figure 4 ). Measurements: total length 1.52; carapace 0.61 long, 0.51 wide; abdomen 0.92 long, 0.48 wide. Leg measurements: I 5.09 (1.33, 0.17, 1.60, 1.28, 0.71), II 4.54 (1.23, 0.18, 1.34, 1.13, 0.66), III 3.46 (0.93, 0.18, 0.98, 0.86, 0.51), IV 5.11 (1.31, 0.19, 1.62, 1.28, 0.71). Epigastric area (Fig. 4B View Figure 4 ) with oval dark brown patch. Endogyne (Fig. 4A View Figure 4 ) with two pairs of stalked spermathecae, globose distally with medially curved receptacle.
Distribution.
Known only from the type locality (Thailand; Fig. 54 View Figure 54 ).
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.