Ademosyne kirgizica Ponomarenko, 1969

Yan, Evgeny V., Beutel, Rolf G. & Ponomarenko, Alexander G., 2017, Ademosynidae (Insecta: Coleoptera): A new concept for a coleopteran key taxon and its phylogenetic affinities to the extant suborders, Palaeontologia Electronica 5 (8), pp. 1-22 : 12

Ademosyne kirgizica Ponomarenko, 1969 A. kirgizica : Ponomarenko, 1969, p. 132

Figure 3.2-3.4 , Figure 4.2, 4.3

Material. Holotype: PIN 2096 /1369, beetle without antennae and legs; Eastern Asia , Dzhailyaucho, Lower Triassic . Paratype: PIN 2555 /1696 from the same locality .

Revised description. Gular plate as wide as short submentum; cardo rectangular ( Figure 4.3 , gul, smt, crd). Prosternum in front of procoxae slightly shorter than prosternal intercoxal process. Mesocoxae large, oblique, three times longer from anterolateral to posteromesal edge than space between them. Free mesotrochantin large. Metaventrite with bead at anterior edge; less than three times as long as its basal width; posteriorly 1.5 times wider than anteriorly. Prosternum and meso- and metaventrite covered with large punctures, rest of ventral side of body with small punctures. See measurements in Table 1.

Differs from other Ademosyne species in the strongly concave anterior prosternal margin, the elongate body (2.5 times as long as wide), the mesoventrite without an acute anterior process, a mesosternal longitudinal suture passing through the pit of the mesoventrite ( Figure 4.2 , sl.2), and a mesanepisternum with longitudinal ridges.

Figures

FIGURE 3. Genera of Ademosynidae family, habitual photos. 1, Gnathosyne akkolkensis Ponomarenko, 1969, holotype, PIN 2496/7 counterpart. 2, Ademosyne kirgizica Ponomarenko, 1969, holotype PIN 2096/1369. 3, 4, A. kirgizica Ponomarenko, 1969 paratype PIN 2555/1696 print and counterprint. 5, A. bacca Ponomarenko, 1969, holotype PIN 2240/310. 6, A. bacca Ponomarenko, 1969, paratype PIN 2240/294. 7, A. ellyptica Ponomarenko, 1969, holotype PIN 2240/224. 8, Cephalosyne capitata Ponomarenko, 1969 holotype PIN 2240/302. Scale bars equal 1 mm.

FIGURE 4. Genera of Ademosynidae family, line drawings. 1, Gnathosyne akkolkensis Ponomarenko, 1969, holotype, PIN 2496/7 counterpart. 2, Ademosyne kirgizica Ponomarenko, 1969, holotype PIN 2096/1369. 3 A. kirgizica Ponomarenko, 1969, paratype PIN 2555/1696 print and counterprint. 4, A. bacca Ponomarenko, 1969 holotype PIN 2240/310. 5, A. bacca Ponomarenko, 1969, paratype PIN 2240/294. 6, A. ellyptica Ponomarenko, 1969, holotype PIN 2240/224. 7, Cephalosyne capitata Ponomarenko, 1969, holotype PIN 2240/302. Scale bars: 1 mm. Label abbreviations: c.e – compound eye; crd – cardo; cx.r – coxal rests; cx1, 2 – pro- and mesocoxae; ep – epipleura; epm2 – mesepimeron; fm1 – profemur; gul – gular plate (gula); i.p1 – prosternal intercoxal process; l.d – pronotal longitudinal depression; l.i – lateral incixions of submentum; l.r – longitudinal ridge; md – mandibles; msc – mesoscutum; mt – mentum; ms.p – mesosternal pit; o.f – occipital foramen; par – parietal; pd – pedicellus; pl1 – propleurite; p.mt – prementum; p.t.p. – posterior tentorial pit; sc – scapus; scl – scutellum; sct – mesoscutum; s.g – gular suture; s.l2 – longitudinal suture of mesoventrite; s.l3 – longitudinal suture of metaventrite; smt – submentum; s.pc – paracoxal suture.