Reddyanus Vachon, 1972

(Figures 1–51, Table 1)

http://zoobank.org/urn:lsid:zoobank.org:act:02B94E0F- 4071-4447-A8E3-04647C934E39

Isometrus (Reddyanus) Vachon, 1972: 176–177, figs. 14, 16, 18, 20; Vachon, 1982: 90–101, 108–110, figs. 47–67, 88–91; Fet & Lowe, 2000: 150–154; KovařÍk, 2003: 5–14, figs. 1–8; KovařÍk & Ojanguren, 2013: 184–193, 347–354, 357–360, figs. 1265–1367, 1384–1409.

Isometrus (Raddyanus [sic]): Tikader & Bastawade, 1983: 254–311 (in part), figs. 727–770, 841–895.

Reddyanus KovařÍk et al., 2016: 53–88, figs. 14, 199, 201– 220, 225–236, 245–250, 254–402, 409–420, 551–554, 561–570, tables 3–5; KovařÍk & ŠťÁhlavský, 2019: 1–45, figs. 1–226, tables 1–4.

TYPE SPECIES. Isometrus acanthurus Pocock, 1899

DIAGNOSIS. Medium sized buthids, adults 19–75 mm. Carapace anteriorly emarginate, surface granulose, carinae obsolete eXcept for anterior medians in some species. Three to five pairs of lateral eyes. Cheliceral fiXed finger with a single ventral denticle. Sternum type 1, triangular in shape. Pectines with fulcra. Tergites with one median carina. Telson with subaculear tooth pointed or rounded. Pedipalps orthobothriotaXic, type Aβ. Trichobothrium d 2 of femur located internally, d

3 of patella located between dorsomedian and dorsoeXternal carina, db of chela located between et and est. Pedipalp movable finger with siX rows of granules, several accessory granules and eXternal and internal accessory granules. Pedipalp fiXed finger with seven rows of granules and siX eXternal and seven internal accessory granules. Legs III–IV without tibial spurs. Tibia and tarsomeres of legs I–III with setae not arranged into bristle combs on dorsal surfaces. Tarsomere II of leg IV with two sparse rows of <20 spiniform setae on ventral surface. Males of most species with more elongate metasomal segments, and often also a wider pedipalp chela manus than females.

SUBORDINATE TAXA. Currently includes 33 species (see KovařÍk & ŠťÁhlavský, 2019: 3).

DISTRIBUTION. From India and China (Tibet) in the west to Melanesia in the east. For distribution in Southeast Asia see Fig. 51.