S. mesaki Sphecomyrma

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closeup view of s. mesaki


s. mesaki found in small piece of amber barely larger ant itself. incomplete specimen numbered amnh nj-1023 preserved @ american museum of natural history in new york city. appendages breach surface of amber while petiole , gaster absent. engel , grimaldi coined specific epithet after bob mesak, original collector donated specimen museum. species discernible other species portion of clypeus having elongated ventral lobe. broad shallow scrobes of antennae, size of head , oval-shaped eyes can further distinguish s. mesaki other sphecomyrma ants. body parts of ant preserved legs, mesosoma , head. head notably large, shorter mesosoma. head 2.2 mm (0.087 in) long , 1.95 millimetres (0.077 in) wide, eyes alone measuring 0.66 millimetres (0.026 in). vertex covered in sparse pilosity 0.2 millimetres (0.0079 in) setae. ocelli present on top of ants head, precisely located above dorsal tangent. base of antennae emerges scrobes, equally long scape. eyes developed , located above bottom of antennae. clypeus setose, meaning bears bristles or setae, except on middle part. mandibles small , contain 2 teeth. antennae moderately long, scapes short pedicel shorter. mesosoma measures 2.66 millimetres (0.105 in) , setose. several setae seen around metanotum (the dorsal sclerite) , propodeum. coxae, proximal segment , functional base of leg, setose (bearing bristle or setae), inflated , large. metapleural gland opening small , noticeable, located away propodeum , above metacoxa (the hind of coxa). legs moderately long. forelegs first tarsomere (subsegments of tarsus) longer combined length of other tarsomeres more distant first subsegment. number of stiff setae varies on each tarsomere: example, first tarsomere has 7 pairs while fourth tarsomere has 2 pairs. pretarsal claw has single subapical tooth , metasoma absent.








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