Diplocentrus keyserlingii, Karsch, 1880

Santibäñez-López, Carlos E., Francke, Oscar F. & Prendini, Lorenzo, 2013, Systematics of the keyserlingii group of Diplocentrus Peters, 1861 (Scorpiones: Diplocentridae), with descriptions of three new species from Oaxaca, Mexico, American Museum Novitates 2013 (3777), pp. 1-48 : 7-8

KEY TO THE SPECIES IN THE KEYSERLINGII GROUP Of GENUS DIPLOCENTRUS

1 Cheliceral movable finger length less than or equal to manus length, fixed finger length less than or equal to manus width; pedipalp femur width greater than height, dorsal surface flat to shallowly convex; pedipalp chela ventrointernal carina strongly developed, infuscated; legs III and IV, basitarsi each with three terminal, one or two subterminal, and one medial spiniform setae on ventral surface (fig. 2A, B)…..…….. mexicanus group

– Cheliceral movable finger length greater than manus length, fixed finger length greater than manus width; pedipalp femur height greater than width, dorsal surface slightly to markedly convex; pedipalp chela ventrointernal carina weakly to moderately developed, not infuscated; legs III and IV, basitarsi each with three terminal and one subterminal spiniform macrosetae on ventral surface (fig. 2C) …………………. 2 ( keyserlingii group)

2 Legs III and IV, telotarsi, counts of spiniform macrosetae in pro- and retroventral rows, 5/5:5/5–6 ........................................................................................................................................ 3

– Legs III and IV, telotarsi, counts of spiniform macrosetae in pro- and retroventral rows, 6–7/6–7:6–7/6–7 ………………………………………………………………………….....4

3 Pedipalp chela manus rounded, dorsal surface strongly reticulate; fingers similar length to manus (fig. 5A) ……………………………………………………………. D. keyserlingii

– Pedipalp chela manus slender, dorsal surface smooth; fingers longer than manus (fig. 5B) ……………………………………………………….................................................... D. mitlae

4 Pedipalp patella, dorsomedian carina granular (♂); pedipalp chela manus, dorsal surface granular (♂, ♀), digital carina granular, weakly developed, dorsal secondary, digital and external secondary carinae similarly developed (fig. 12) …….....………....….. D. formosus

– Pedipalp patella, dorsomedian carina smooth (♂); pedipalp chela manus, dorsal surface smooth to reticulate (♂), digital carina smooth to slightly granular, strongly developed, dorsal secondary and external secondary carinae less developed than digital carina (fig. 6)...........5 5 Pedipalp chela, fixed finger straight or shallowly curved (♂); manus, dorsal surface granular (♀), digital carina moderately developed, granular, dorsal secondary and external secondary carinae weakly developed, granular (♀) ……………………….…………….…6

– Pedipalp chela, fixed finger gently curved (♂); manus, dorsal surface smooth or faintly reticulate (♀), dorsal secondary, digital and external secondary carinae weakly developed to obsolete, smooth (♀) ………………………………………………………………….... 7

6 Carapace coloration (adult), brown to pale brown; pedipalp coloration paler than, and contrasting with carapace coloration; pedipalp patella, dorsoexternal carina weakly developed to obsolete, smooth (♂); pedipalp chela, fixed and movable fingers shallowly curved (♂; fig. 6A) …………....................................................................….….. D. rectimanus

– Carapace coloration (adult), reddish to ferruginous; pedipalp coloration similar to, and not contrasting with carapace coloration; pedipalp patella, dorsoexternal carina moderately developed, weakly granular to crenulate (♂); pedipalp chela, fixed and movable fingers straight (♂; fig. 16A) …………………………………………… D. sagittipalpus , n. sp.

7 Legs III and IV, telotarsi, counts of spiniform macrosetae in pro- and retroventral rows, 7/7:7/7 …………………………………………………………………………...... D. tenango

– Legs III and IV, telotarsi, counts of spiniform macrosetae in pro- and retroventral rows, 6/6:6/6–7 ….................................................................................................................................... 8

8 Pectinal tooth counts, 14–16 (♂), 11–13 (♀) ……………………………......…… D. coylei

– Pectinal tooth counts, 8–12 (♂), 6–10 (♀) ………………………………………………. 9

9 Pedipalp chela manus, dorsal surface weakly reticulate (♀), digital carina smooth (♀) to granular (♂), manus rounded (♂; fig. 4B) ………………………………….. D. hoffmanni

– Pedipalp chela manus, dorsal surface smooth (♀), digital carina smooth to crenulate, manus slender (♂) ………………….....…………………………………………………...10

10. Base coloration (adult), brown to orange-brown; carapace anteromedian notch U-shaped (fig. 7B); pedipalp patella, dorsoexternal carina weakly developed to obsolete, smooth to slightly crenulate (♂); pedipalp chela manus slender, dorsal surface strongly reticulate (♂), dorsal secondary and external secondary carinae weakly developed, smooth (♂), fingers curved ……..............................................................……………… D. kraepelini , n. sp.

– Base coloration (adult), reddish orange; carapace anteromedian notch V-shaped (fig. 7D); pedipalp patella, dorsoexternal carina weakly to moderately developed, crenulate (♂); pedipalp chela manus rounded, dorsal surface granular-reticulate (♂), dorsal secondary and external secondary carinae weakly to moderately developed, crenulate (♂), fingers shallowly curved ……..........................................………….…........... D. sissomi , n. sp.