Cadoderus mysticus (Faust)

Yunakov, Nikolai, 2012, 3535, Zootaxa 3535, pp. 1-104 : 18-19

Cadoderus mysticus (Faust)

(figs 3, 4, 114–128, 365, 368)

Ellimenistes mysticus Faust, 1900: 326 , Lona (1937: 353). Cadoderus mysticus . Marshall (1952: 263).

Diagnosis. Differs from all other species of the genus by antennal scape without scales; tarsi setose, without scales; elytra with pale transverse band on declivity and scattered deep-brown unclear spots on intervals 1, 2, 4, 6; green scales scattered; Ventral side of head and pronotum grey; transverse sulcus of rostrum not concealed by scales; epistome fused with frons in frontoepistome, not delimited by carina, coarsely punctate; tergosternal suture of mesothorax obsolete; elytra cordate; elytral disc weakly convex; apex of median lobe with dorsal tooth-shaped process; coxites heavily sclerotized, not curved dorso-ventrally, without heavily sclerotized dorsal baculi; cornus of spermatheca thick, not extended beyond corpus.

Description.

Measurements. BL f: 3.61–4.11 (3.91) mm, BW f: 1.90–2.22 (2.09) mm, BH f: 1.60–1.74 (1.68) mm.

Vestiture. Body densely covered with serried and feebly overlapping, round scales, setose. Subgenae and genae sparsely squamose. Temples with bare longitudinal field posteriorly of eyes. Setae of head slender forming rows along lateral edges of epifrons (recumbent or subrecumbent) and above the eyes (erect). Subocular row consists of 2–4 setae. Posterior setal fringe consists of round plumose setae, not hidden by posterior edge of pronotum. Elytral intervals 1–7 with distinct row of recumbent or subrecumbent slender setae (half as long as interval width). Ventrites sparsely squamose. Antennal scape and funicle sparsely setose; setae long, slender, acute, and suberect. Funicle setose, without scales. Femora and tibiae external and internal surfaces covered with serried scales and subrecumbent setae; setae on legs slender, acute. Male metatibiae with wide grooming brush; hairs long. Tarsi setose.

Coloration. Background scaling brown; spotted pattern formed by deep-brown, green and cupreous scales. Dark and pale scales both with slightly pronounced pearl shine. Head dorsal surface brown without stripes. Subgenae and genae green. Pronotum with deep-brown background scaling and 3 longitudinal cupreous unclear stripes. Elytra background scaling brown. Interval 1, 9–11 with scattered green scales. Declivity with pale transverse band. Intervals 1, 2, 4, 6 with scattered deep-brown unclear spots, 7–11 green. Ventral side grey. Femora brown, metafemora in distal portion with oblique cupreous band. Tibiae external surface brownish-cupreous.

Head. Rostrum weakly elongate [RL/RW: 1.25–1.31 (1.27)], almost parallel-sided. Pterygia weakly extended beyond contour of rostrum. Lateral carinae weakly convex. Epifrons narrow, parallel-sided, at the level of antennal articulation 1.8 x narrower than vertex, distinctly sloping at sides, with convex median carina. Transverse sulcus deep, not concealed entirely by dense scaling at dorsal surface and at sides. Anterior portion of epifrons not steep, with distinct median sulcus. Epistome fused with frons in fronto-epistome, triangular or U-shaped, strongly convex, bare, coarsely punctate, its posterior margian reaches the antennal articulation level. Eyes large, orbicular, sublateral, moderately convex, highest at the middle [FW/ELD: 0.67–0.87 (0.80)]. Vertex narrow, flat. Frontal fovea deep, furrow-shaped, not concealed by scales.

Antennae. Scape extended behind anterior edge of pronotum, evenly curved and widened distally. Funicular segment 1 as long as 2nd; 3rd–7th oblong

Thorax. Pronotum strongly transverse [PL/PW: 0.71–0.73 (0.72)], evenly slightly convex at sides, constricted at apex, pronotum widest in posterior half. Disc weakly convex longitudinally and transversally, with 2 shallow sublateral depressions. Tergosternal suture obsolete. Metanepisternal suture obsolete.

Elytra. Cordate, anterior declivity arcuate, abrupt, sharpen; anterior portion of disc sharply sloped [EL/EW: 1.00–1.26 (1.15)]; disc slightly convex [EL/BH: 1.50–1.61 (1.56)]. Subscutellar callosity entirely hidden by scales, with 2 tiny tubercles. Elytral intervals flat. Anterior portion of 1st striae with regular row of tiny tubercles.

Legs. Protibiae and mesotibiae straight, not widened at the apex. Interior edge distinctly C-shaped, with small teeth in distal portion. Metatibiae with large teeth on interior edge. Mucro well developed, thorn-shaped, acute. Setal comb of protibiae consists of sparse 12–14 black setae distinctly extending beyond external edge of tibiae. Bevel of metatibiae narrowly enclosed; its surface bare. Tarsi robust; tarsomere 2 elongate, 1.5 x as long as wide; tarsomere 3 with two wide lobes; tarsomere 5 of metatarsus extending beyond apical lobes of 3rd by length of the last one.

Abdomen. Posterior margin of 1st ventrite straight. 2nd ventrite 1.5 x as long as 3rd one, posterior margin of 2nd ventrite straight. 5th ventrite in male flat, in female strongly transversally depressed near the apex; apical edge in male broadly rounded, in female acute.

Male genitalia. Median lobe parallel-sided, tubular, in apical 1/4 sharply narrowed anteriorly; apex attenuate, acute, strongly laterally compressed with distinct dorsal tooth, as long as apodeme. Internal sac without spiculate fields, with large, long aggonoporium consisting of two stick-shaped symmetrical lobes connected proximally by transverse bridge and long proximal-ventral process. Ostium absent. Ligulae membranous heavily sclerotized. Parameres long, fused in base, basal piece of tegmen narrow, tegminal apodeme 0.5 x as long as apodemes of median lobe.

Female genitalia. Coxites heavily sclerotized, not curved dorso-ventrally, without heavily sclerotized dorsal baculi, evenly covered with pores, without sensilla. Styli well developed, stick-shaped, bearing 1 seta. Spermatheca moderately sclerotized, with short broad ramus, collum slender, as long as ramus. Corpus large, slightly swollen. cornus thick, not extended beyond corpus. Tergite 8 subtrapezoid, with straight fringe of multiple, tenuous, short setae at the apex. Sternite 8 thick. Lamella sharply narrowed and acute, without setae, knife-shaped, heavily sclerotized. Apodeme thick; caput small.

Distribution. Tanzania: West Usambara (Kwai) (figs 365, 368).

Bionomics. Unknown.

Type material examined. Lectotype female, here designated, dissected ( MTD) gold square, “Kwai, Weise [handwritten]”/ “ mysticus Faust , [handwritten]” /coll. J. Faust, Ankauf 1900 [blue, printed]/ Typus [red, printed] / LECTOTYPUS, Ellimenistes mysticus Fst., Dr. E. Haaf, 1961 ; “ LECTOTYPUS / Ellimenistes / mysticus Fst. / Yunakov des., 2011”. Paralectotypes: 2♀ ( MTD): gold square, “Kwai, Weise [handwritten]”/ “ mysticus Faust , [handwritten]” /coll. J. Faust, Ankauf 1900 [blue, printed]/Typus [red, printed]/ PARATYPOID/ Ellimenistes / mysticus Fst. / Dr. E. Haaf, 1961; “ PARALECTOTYPUS / Ellimenistes / mysticus Fst. / Yunakov des., 2011” .

Note. Previous lectotype designation by E. Haaf was apparently not published.

Additional material examined. Tanzania: 1♂ ( DEI) “Usambara”/ “coll. Pape ”/ “ Cadoderus mysticus Fst., Hustache det.” ; 1♂ ( DEI) “Usambara/ P. Weise ”; “coll. Kraatz ” .