identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
280171E79A81545CBA8B16045E220FDB.text	280171E79A81545CBA8B16045E220FDB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myrmecarchaea sp.	<div><p>Myrmecarchaea sp.</p><p>Material examined.</p><p>single specimen, voucher number BSIP41985 (collection details above), deposited in Birbal Sahni Institute for Palaeosciences in Lucknow, India.</p><p>Description.</p><p>Body length from endites to abdomen: 2.4 mm, but abdominal portion of exuvium is partially deformed (Fig. 1C). Carapace missing. Chelicerae texture with scales and also tubercles present at setal bases (Fig. 1E). Sternum and chelicerae setae white and thickly plumose. Posterior sternum tubercle absent (Fig. 1F). Sternum not fused to intercoxal sclerites, with thin suture separating the two. Intercoxal sclerites large, filling up the intercoxal space. Sternum length 0.52 mm and width 0.21 mm, narrow throughout (longer than wide) and not shield shaped (Fig. 1D). Pedicel 0.21 mm long and 0.18 mm wide. Spur on each lateral side of pedicel (Fig. 1F). Posterior of cephalothorax elongated with a large space (0.084 mm) between coxae III and IV compared to spaces between other coxae (e.g., 0.048 mm between coxae II and III), roughly twice the length (Fig. 1F). Labium with narrow, v-shaped notch at tip, not fused to sternum. Endite shape slightly convergent, following line of the labium, then converging at distal end around labium (Fig. 1D). Endites elongated to at least half the length of the cephalothorax, pointing downward around 45°, extending beyond the coxae. Patella IV with retrolateral bulge, unclear if present on other patella. Large tubercles absent on legs, leg texture with scales. Femur IV with distinct bend. Dorsal surface of femora with bump. Leg IV patella/tibia juncture straight, not hyperextended. Femur I base the same thickness as other femora (Fig. 1D). Femur I longest (2.05 mm), followed by femur II (1.60 mm), femur IV (1.37 mm), then femur III (1.05 mm). Trochanters entire. Leg spines absent. Chelicerae 0.80 mm long and 0.17 mm wide (at midpoint), anterior surface smooth, i.e., lacking spine, protuberance, or cluster of setae. Basal edge of chelicerae splayed out rather than with parallel edges. Slight constriction at basal edge just distal to splayed edge. 8-9 visible peg teeth present only on cheliceral promargin, peg teeth uneven lengths, not showing a pattern (e.g., short, long, short, long), with blunt tips rather than tapering (Fig. 1E). Longer peg teeth present, close to gland mound, and at least one peg tooth present that is anterior to main promargin row. Four teeth on cheliceral retromargin. Cheliceral stridulatory striae present, occurring in the basal 1/3 of chelicera, with a regular edge forming an oval patch. Stridulatory cusps present on pedipalpal femora, two visible on basal right femur and one on basal left, with distal remainder of femora obscured. Distal portion of chelicerae curved laterad, with distal tip tapering, rather than blunt (Fig. 1E). Cheliceral gland mound present, a pointed bulge on retromargin close to where closed fang tip would meet cuticle (Fig. 1E). Fangs evenly rounded, lacking increased curvature at tip. Abdomen 1.35 mm long, exuvium shape suggests abdomen was smoothly rounded, elongate, and lacks dorsal tubercles. Abdomen hairs thick, plumose, with tips blunt and club-like (Fig. 1C). Anterior lateral, posterior lateral, and posterior median spinnerets developed (Fig. 1C). Large sclerotized pits on abdomen absent. Dorsal and ventral sclerotization on abdomen anterior, forming a sclerotized circle around pedicel, with dorsal sclerite folded back due to molting process (Fig. 1C). Pedipalpal tarsus lacking prolateral and retrolateral brush of setae, and spines.</p></div>	https://treatment.plazi.org/id/280171E79A81545CBA8B16045E220FDB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Wood, Hannah M.;Singh, Hukam;Grimaldi, David A.	Wood, Hannah M., Singh, Hukam, Grimaldi, David A. (2021): Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae). ZooKeys 1071: 49-61, DOI: http://dx.doi.org/10.3897/zookeys.1071.72515, URL: http://dx.doi.org/10.3897/zookeys.1071.72515
2FD08425FCDE56039E1FA94E63D9C21F.text	2FD08425FCDE56039E1FA94E63D9C21F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myrmecarchaea Wunderlich 2004	<div><p>Genus Myrmecarchaea Wunderlich, 2004</p><p>Remarks.</p><p>The presence of a cheliceral gland mound, peg teeth running along the inner cheliceral margin, cuticle texture with scales and/or tubercles (in this case, having both), and the lack of leg spines indicate Palpimanoidea . The following characters indicate Archaeidae: setal bases on tubercles on the sternum, the shape of the sternum (narrow throughout, not shield shaped), the elongated chelicerae, the shape of the gland mound (pointed, positioned close to fang tip), the blunt setae on the abdomen (rather than tapering), the presence of a bump on the dorsal, basal surface of the femora, and the presence of a curve in femur IV. The specimen is referred to as Myrmecarchaea based on having a slightly elongated pedicel and greatly elongated legs (Wunderlich 2004). Specifically, elongated legs are defined here as femur I being at least four times as long as the carapace length. Another diagnostic character for the genus may be the presence of a spur on each lateral side of the pedicel, adjacent to the anterior of the abdomen (Fig. 1F). The presence of lateral spurs is also observed in M. petiolus Wunderlich, 2004, and M. pediculus Wunderlich, 2004 (Fig. 2; pedicel is obscured in the single known specimen of M. antecessor Carbuccia et al., 2020). There are other palpimanoid genera with elongated legs, including both extinct (e.g., Planarchaea Wunderlich, 2015) and extant members (e.g., Eriauchenius workmani Pickard-Cambridge, 1881, although with only leg I elongated). However, these other taxa do not also have an elongated pedicel, nor a pedicel with lateral spurs.</p><p>Myrmecarchaea is comprised of three species: M. petiolus, M. pediculus, and M. antecessor . The exuvium shows similarities to M. antecessor in having a diastema between coxae III and IV (compare Fig. 1D, F with fig. 2 from Carbuccia et al. 2020). The pedicel seems slightly longer than in non- Myrmecarchaea archaeids, but not as extreme as the pedicel of M. petiolus and M. pediculus . The ratio of cephalothorax length to pedicel length can be used to compare these shape differences: M. pediculus = 1.2; M. petiolus = 1.4; M. antecessor = 2.3 (estimated from figures in Carbuccia et al. 2020); E. workmani = 4.3. This ratio should be treated with caution because measurements were taken from different views for the different species out of necessity due to inconsistencies in fossil preservation. The exuvium from Cambay amber has a ratio of 4.0, and does not present a remarkably long pedicel. The adult ratio may be closer to that of M. antecessor, but because this exuvium is from a juvenile, it cannot be determined whether this is M. antecessor or a new species.</p></div>	https://treatment.plazi.org/id/2FD08425FCDE56039E1FA94E63D9C21F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Wood, Hannah M.;Singh, Hukam;Grimaldi, David A.	Wood, Hannah M., Singh, Hukam, Grimaldi, David A. (2021): Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae). ZooKeys 1071: 49-61, DOI: http://dx.doi.org/10.3897/zookeys.1071.72515, URL: http://dx.doi.org/10.3897/zookeys.1071.72515
