Dermestocyphon Pic 1918
Creators: name: Ruta, Rafał
name: Yoshitomi, Hiroyuki
name: Klausnitzer, Bernhard
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scirtidae
Dermestocyphon

description: Dermestocyphon Pic, 1918
Dermestocyphon Pic, 1918: 18 (subgenus of Cyphon Paykull, 1799, type species: Cyphon drianti Pic,1918 (subsequent designation by SASAGAWA (1985)).
Diagnosis. Body oval to oblong (Figs 1–17); coloration yellowish-brown to black, dorsum often with colour pattern, very variable in some species. Head and pronotum covered with subtle, granulate punctures; elytra with normal punctation. Antennomere I cylindrical, antennomere II globular to cylindrical, remaining antennomeres more or less conical; segment III of labial palpi arising from the lateral (Fig. 20) or terminal (Figs 23, 26) part of segment II; mandibles (Figs 18, 21, 24) symmetrical, simply pointed at apices. Hind wing (Figs 27–29) with long MP 4 connected with CuA + AA 1+ 2 in median portion (form 2 sensu YOSHITOMI 2005). Mesoventral process long and narrow, subparallel-sided, bilobed at apex in Himacyphon subgen. nov. and Oreocyphon. Apodemes of male tergite VII small, not protruding; apodemes of male tergite VIII connected with a transverse rod-like structure in basal portion of plate (e.g., Fig. 60); tegmen small, U-shaped, with long lateral rod-like projections (e.g., Fig. 61); penis elongate, with well developed trigonium and elongate, sometimes apically widening parameroids (e.g., Fig. 62). Female: excitators on the elytra (Figs 10, 13, 15–17, 44–51, 111–115) either only in apical portion or both in apical and humeral portions of elytra (excitators at outer margin of humeral region of elytra are found among Scirtidae only in Dermestocyphon); ovipositor in some species with a relatively well sclerotized proctiger, which is composed of paired thumb-like projections; baculus simple, long, without branchlet (Figs 52, 54, 56); in Himacyphon subgen. nov. and Oreocyphon sternite VII with a membranous flap (Figs 32–33, 35–36) having species-specific morphology; bursella with proximal (Himacyphon subgen. nov.), distal (Oreocyphon) or both proximal and distal sclerites (Dermestocyphon s. str.).
Remarks. The synapomorphies of Dermestocyphon are as follows: 1) hind wing morphology (MP 4 connected with median portion of CuA + AA 1+2 at right angle; radial cell subtriangular, proximal portion of RA3+4 joining RA1+2 at right angle); 2) bauplan of male genitalia (small tegmen with elongate lateral rods, penis with elongate trigonium and well developed parameroids).
Dermestocyphon has a relatively uniform morphology of the male genitalia, but several other features vary remarkably, allowing a distinction of three subgenera:
1. Segment III of labial palpi arising from the side of segment II (Fig. 20); body elongate (TL/EW 1.9–2.2), sides subtly curved to subparallel (Figs 1–6); mesoventral process narrow, tempered at apex; elytra of females with humeral excitators, rarely also with apical excitator (Figs 44–51); bursella with tricornate proximal sclerite and two small oval distal sclerites (Figs 53, 55, 57). .......................................................... Dermestocyphon s. str.
– Segment III of labial palpi arising from the apex of segment II (Figs 23, 26); body oval to oblong oval; elytra of females with adscutellar or apical excitators (present in all species with known females); bursella either with tricornate proximal sclerite or with 4 distal sclerites. .......................................................................................................................... 2
2. Body oval (TL/EW 1.3–1.5, Figs 7–9, 11–13); mesoventral process moderately narrow, distinctly bilobed at apex; elytra of females with apical excitators (Figs 10, 13; uncertain if in all species); bursella with 4 sclerites in distal portion (Fig. 85). ............................... .......................................................................................... Oreocyphon Klausnitzer, 2009
– Body oblong oval (TL/EW 1.6–1.8, Figs 14–16); mesoventral process narrow, subtly bilobed at apex; elytra of females with fungiform adscutellar excitators (Figs 15, 16) and microreticulated areas in basal portion of elytra (Figs 17, 111, 115; in some species also in lateral and apical portions of elytra); bursella with tricornate proximal sclerite (Figs 110, 118). .............................................................................. Himacyphon subgen. nov.
description: Published as part of Ruta, Rafał, Yoshitomi, Hiroyuki & Klausnitzer, Bernhard, 2013, Review of the genus Dermestocyphon (Coleoptera: Scirtidae: Scirtinae), pp. 253-285 in Acta Entomologica Musei Nationalis Pragae 53 (1) on pages 255-256, DOI: 10.5281/zenodo.5740395