Dolichosyne rostrata 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 : 9

publication ID	https://doi.org/ 10.26879/739
persistent identifier	https://treatment.plazi.org/id/038387B1-0057-6B77-FF59-FE6FF1C9FA34
treatment provided by	Felipe
scientific name	Dolichosyne rostrata Ponomarenko, 1969
status

Treatment

Dolichosyne rostrata Ponomarenko, 1969 D. rostrata : Ponomarenko, 1969, p. 129

Figure 1.4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 , Figure 2.4 View FIGURE 2 View FIGURE 3 View FIGURE 4

Material. Holotype: PIN 2555 View Materials /1735, beetle without legs and antennae; Middle Asia , Dzhailyaucho, Lower Triassic.

Revised description. Mandibles longer than half of head, only very slightly curved apically. Eyes relatively small, half as long as parietals, elongate-oval, not protruding laterally. Gular plate half as wide as head, submentum rectangular, same size as gular plate ( Figure 2.4 View FIGURE 2 View FIGURE 3 View FIGURE 4 , gul, smt). Mentum small, transverse, half as long as submentum, anterior margin weakly rounded; prementum as long as mentum, half as wide, with pair of distinct cavities for labial palpi ( Figure 2.4 View FIGURE 2 View FIGURE 3 View FIGURE 4 , mt, pmt). Pronotum with posterior angles distinctly protruding posterolaterally. Propleurites triangular ( Figure 2.4 View FIGURE 2 View FIGURE 3 View FIGURE 4 , pl1). Prosternal intercoxal process distinctly widening posteriorly, with abruptly widened apex forming small lateral projections. Metaventrite with anterior angles strongly protruding anteriad; anterior intercoxal process with wide blunt apex. Elytra with at least eight striae. See measurements in Table 1.

Eyes smaller than in other species, less than half as long as mandibles, separated from mandibular bases at distance equal to their length; posterior pronotal angels distinct, projecting posterolaterally; anterior metaventral process with wide blunt apex.