Petalomera Stimpson 1858

Key to species of Petalomera (modified from McLay & Ng 2007) 1. Carapace margin behind lateral rostral teeth distinctly eave-like, merus of P3 petaloid............................... 2 - Carapace margin behind lateral rostral teeth not eave-like, merus of P3 flattened but not petaloid...................... 3 2. Carapace surface sparsely granulate; eave-like carapace margin behind lateral rostral teeth distinctly not granulate; lateral rostral teeth separated by a V-shaped sinus; three distinct anterolateral teeth; length to width of ratio of propodus of P3 and P4 less than 1.0, dactyli strongly hooked but not opposable to the small propodal spine........ Petalomera pulchra Miers, 1884 - Carapace covered in small rounded granules; carapace margin behind rostral teeth weakly eave-like granulate; lateral rostral teeth separated by a U-shaped sinus; three broad, granulated anterolateral teeth (less clear because of granules); length to width of ratio of propodus of P3 and P4 more than 1.0, dactyli curved and opposable to large propodal spin............................................................................................... Petalomera longipes Ihle, 1913 3. Carapace highly domed, surface covered with large blunt granules (may be areolate) especially on anterior half; carapace regions not marked by deep grooves; lateral rostral teeth separated by a V-shaped sinus; no distinct anterolateral teeth; dactyli of P4 and P5 opposable to small propodal spines.............................. Petalomera granulata Stimpson, 1858 - Carapace not highly domed, surface covered with unevenly distributed vesiculous granules; carapace regions marked by deep grooves; the lateral rostral teeth separated by a U-shaped sinus; variable number of small granular anterolateral teeth; dactyli of P4 and P5 opposable to large propodal spines...................................... Petalomera indica Alcock, 1900