Zigrasimecia ufv-06, 2023

Abstract, Júlio Cezar Mário Chaul, 2023, A revision of the Cretaceous ant genus Zigrasimecia Barden & Grimaldi, 2013 (Hymenoptera: Formicidae: † Zigrasimeciinae), Zootaxa 5325 (3), pp. 301-341 : 327-328

Zigrasimecia ufv-06

( Fig. 16 )

The specimen is covered by hundreds of bubbles in the amber matrix, which makes it difficult to achieve satisfactory characterization. This morphospecies is overall very similar to Zigrasimecia ufv-04, sharing with it the abovementioned traits, except for being larger (HW 0.8, ML 0.72) and with the compound eye formed by more ommatidia, at least 90. It has approximately 34 clypeal chaetae. See above a discussion on the possible relatedness of the two morphospecies to Z. hoelldobleri . This morphospecies was excluded from all identification keys due to insufficient characters to differentiate it from Z. hoelldobleri ; in the dichotomous key it would easily key out as the latter.

Examined material. Worker (ANTWEB1032645). Hukawng Valley, Kachin Province, Myanmar; Lower Cenomanian (ca.98.79 ± 0.62 Ma) [ JCMCC] .

Figures

FIGURE 16. Morphospecies Zigrasimecia ufv-06 (specimen ANTWEB1032645). A, profile of right side of body; B, left side of petiole in dorsolateral view; C, meso- and metatibiae (upper and lower portions of image, respectively), evincing thickened, truncate pilosity. Scale bars are 0.2 mm.