Cretopachyderes burmitinus, Kundrata & Prosvirov & Long & Packova, 2021

Kundrata, Robin, Prosvirov, Alexander S., Long, Roger & Packova, Gabriela, 2021, Cretopachyderes gen. nov., a new remarkable click beetle (Coleoptera: Elateridae: Agrypninae) from the mid-Cretaceous Burmese amber, Fossil Record 24 (2), pp. 347-355 : 348-349

publication ID

https://doi.org/ 10.5194/fr-24-347-2021

publication LSID

lsid:zoobank.org:pub:1894924B-A1FE-43AF-A97F-50DAE387E9C0

persistent identifier

https://treatment.plazi.org/id/428E20BE-1DC2-482F-B81C-A8BC1439A027

taxon LSID

lsid:zoobank.org:act:428E20BE-1DC2-482F-B81C-A8BC1439A027

treatment provided by

Felipe

scientific name

Cretopachyderes burmitinus
status

sp. nov.

Cretopachyderes burmitinus sp. nov., here designated.

Etymology

Derived from the words “Creto” (referring to the Cretaceous Period) and “ Pachyderes ” (a genus name in Elateridae ) ( Fig. 5 View Figure 5 ). Gender: masculine.

Diagnosis

Cretopachyderes gen. nov. can be readily recognized among other Mesozoic click-beetle genera by the distinctly pronounced posterior angles of pronotum ( Figs. 1–3 View Figure 1 View Figure 2 View Figure 3 ). Additionally, it can be recognized by the following combination of characters: body oval-elongate, rather flattened, antenna serrate, relatively short, almost reaching posterior angles of pronotum, pronotal sublateral carina distinct, coming from subapical inner part of posterior angle and running medially across whole length of posterior angle, hypomeron with posterior margin subapically subrectangularly emarginate, pronotosternal sutures anteriorly open, prosternal process very slightly gradually narrowed toward apex, subapically abruptly narrowed, tibia shorter than femur and also shorter than tarsus, without paired spurs, tarsomeres simple ( Figs. 1–4 View Figure 1 View Figure 2 View Figure 3 View Figure 4 ).

Description

Adult. Body ( Fig. 1 View Figure 1 ) oval-elongate, rather flattened. Head ( Figs. 1–3 View Figure 1 View Figure 2 View Figure 3 ) retracted to prothorax, less than half as wide as pronotum. Eyes moderately large, with their major part hidden in prothorax. Antenna ( Figs. 2b View Figure 2 ; 3c–e View Figure 3 ) serrate from antennomere 4, relatively short, almost reaching posterior angles of pronotum; antennomere 3 short, slightly longer than wide, distinctly shorter than antennomere 4, antennomeres 4–10 elongate, with short serrations; terminal antennomere simple, elongate, apically narrowed and narrowly rounded. Terminal maxillary palpomere securiform. Pronotum ( Figs. 1–3 View Figure 1 View Figure 2 View Figure 3 ) widest at one-third (without posterior angles), otherwise widest at posterior angles when posterior angles included, distinctly wider than long if measured along midline (without posterior angles), otherwise slightly longer than wide when posterior angles included. Anterior angles very short; lateral sides rounded anteriorly, then subparallel; posterior angles very long, surpassing humeral part of elytra, sharp, oriented posteriorly, with inner margin with distinct tooth and outer margin slightly concave. Lateral carina distinct, complete. Sublateral carina distinct, coming from subapical inner part of posterior angle and running medially across whole length of posterior angle. Hypomeron with posterior margin subapically subrectangularly emarginate. Pronotosternal sutures almost straight, anteriorly open. Prosternum ( Figs. 2b View Figure 2 ; 3c View Figure 3 ) elongate; prosternal lobe short, rounded; prosternal process robust, very slightly gradually narrowed toward apex, subapically abruptly narrowed. Scutellar shield ( Figs. 1b View Figure 1 ; 2a View Figure 2 ; 3a View Figure 3 ; 4a View Figure 4 ) longer than wide, narrowly rounded posteriorly. Elytra ( Figs. 1a, c View Figure 1 ; 2a, b View Figure 2 ; 3a, c View Figure 3 ; 4a, b View Figure 4 ) together about twice as long as wide, widest at basal third, with striae formed by lines of fine punctures; interstriae smooth, slightly convex. Metaventrite wider than long. Metacoxal plate ( Fig. 2b View Figure 2 ) with basal portion wide, posteriorly widely roundly emarginate, then obliquely abruptly narrowed towards body edge. Leg ( Figs. 1a–c View Figure 1 ; 2a–b View Figure 2 ; 4d– h View Figure 4 ) slender, femur robust, elongate; tibia shorter than femur, densely covered with thick long sharp setae, without distinct spurs; tarsus slender, elongate, distinctly longer than tibia; tarsomeres simple; claws simple. Abdomen ( Figs. 2b View Figure 2 ; 4c View Figure 4 ) with ventrites 1–4 subequal in length; ventrite 5 longer, narrowly rounded to subacute apically.

R. Kundrata et al.: Cretopachyderes gen. nov., a new remarkable click beetle 349

Composition and distribution

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