Polycricus sp.

Riquelme, Francisco & Hernández-Patricio, Miguel, 2018, The millipedes and centipedes of Chiapas amber, Check List 14 (4), pp. 637-646 : 644

Polycricus sp. indet.

Referred material. 2 specimens: MACH.4: adult of undetermined sex, incomplete specimen; MALM.314: adult of undetermined sex, incomplete specimen ( Fig. 4A–D).

Locality. MACH.4: Mexico, Chiapas: Huitiupán, 17°10ʹ 13ʺ N, 092°41ʹ24ʺ W. MALM.314: Mexico, Chiapas: Simojovel: La Pimienta site, 17°08ʹ29ʺ N, 092°45ʹ46ʺ W.

Identification. MACH.4 body with 30 pairs of legs and MALM.314 with 31, both without distal segment, head moderately elongated, antennae slender with 14 segments, forcipular segment elongated and broad; the 2 specimens match the genus Polycricus . A published study of molecular taphonomy, which includes the MACH.4 sample, shows an infrared micrograph of the specimen ( Riquelme et al. 2014b:10, fig. 7). This represents the first record of the family Geophilidae in Chiapas amber.

Remarks. Extant members of the family Geophilidae are recorded in northern and central Mexico, including the states of Baja California Sur, Guerrero, Hidalgo, Mexico City, Michoacán, Morelos, Nuevo León, Oaxaca, Puebla, Querétaro, San Luis Potosí, Sinaloa, State of Mexico, Tamaulipas and Veracruz ( Cupul-Magaña 2013, Flores- Guerrero et al. 2015).

Order Scolopendromorpha Pocock, 1895

Family Scolopocryptopidae Pocock, 1896