Dolichosyne confragosa 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 : 6-9

Dolichosyne confragosa Ponomarenko, 1969 D. confragosa : Ponomarenko, 1969, p. 127

Figure 1.1-1.3 , Figure 2.1-2.3

Material. Holotype: PIN 2069 /1336, strongly damaged. Middle Asia , Dzhailyaucho, Lower Triassic . Paratypes: PIN 1725 /925, 2069/1340, 2070/1551 from the same locality .

Revised description. Mandibles 0.6 as long as head, distal third roundly curved and acute. Eyes large ( Figure 2.2 , c.e), as long as parietals ( Figure 2.2 , par), inner margins rounded, close to mandibular bases. Gular plate parallel-sided, narrow ( Figure 2.2 , gul), about 0.3 as wide as maximum width of submentum ( Figure 2.2 , smt). Submentum subtrapezoidal, as long as eye, with small lateral incisions on anterior angles for cardines ( Figure 2.2 , cd). Posterior angles of pronotum not protruding posterolaterally. Protrochanters 0.3 of profemoral length ( Figure 2.2 , tr1). Prosternal intercoxal process parallel-sided ( Figure 2.2 , i.p 1 ), with apex abruptly widening apically and forming distinct lateral projections. Scutellar shield 0.6 as long as prosternal process ( Figure 2.2 , scl). Elytra with 11 striae, 2 nd and 3 rd striae (counting from sutural margin) shortened, half as long as elytra, 6 th and 8 th merging near elytral apex enclosing 7 th, not reaching elytral apex. See measurements in Table 1.

In contrast to other species of Dolichosyne gular plate only one third as wide as submentum; eyes large, longer than half of mandible.

Remarks. Due to strong damage the holotype it is not shown in Figures 1-2 . The paratype 1725/925 is lost.

Figures

FIGURE 1. Dolichosyne Ponomarenko, 1969 habitus photos. 1, D. confragosa PIN 2785-2675 new material. 2, 3, D. confragosa paratype PIN 2070-1551 part and counterpart. 4, D. rostrata holotype PIN 2555/1735. 5, D. sulcata holotype PIN 2240-274 part. 6, D. sulcata paratype PIN 2240-234 part. 7, D. sulcata paratype PIN 2240-305 part. 8, D. sulcata PIN 2785-2659. Scale bars equal 1 mm.

FIGURE 2. Dolichosyne Ponomarenko, 1969 line drawings. 1, D. confragosa PIN 2785-2675. 2, 3, D. confragosa paratype PIN 2070-1551 part and counterpart. 4, D. rostrata holotype PIN 2555/1735. 5, D. sulcata holotype PIN 2240-274 part. 6, D. sulcata paratype PIN 2240-234 part. 7, D. sulcata paratype PIN 2240-305 part. 8, D. sulcata PIN 2785-2659. Scale bars equal 1 mm. Label abbreviations: c.e – compound eye; cx1, 2 – pro- and mesocoxae; eps3 – metepisternum; gul – gular plate (gula); i.p1 – prosternal intercoxal process; l.d – pronotal longitudinal depression; l.i – lateral incisions of submentum; l.r – longitudinal ridge; msc – mesoscutum; mt – mentum; par – parietal; pl1 – propleurit; p.mt – prementum; p.t.p. – posterior tentorial pit; scl – scutellum; sct – mesoscutum; smt – submentum; s.scl – subocular suture; tr1 – protrochanter; tr3 - metatrochanter.