Oncophyes cadoderoides Yunakov, 2012

Yunakov, Nikolai, 2012, 3535, Zootaxa 3535, pp. 1-104 : 47-49

Oncophyes cadoderoides Yunakov , sp.n.

(figs 13, 14, 354, 356–364, 368)

Diagnosis. Similar to Cadoderus species in general appearance but definitely differs by flat eyes and large subscutellar callosity. From O. amoenus differs by elytral interval 1 without row of setae; elytra background scaling cupreous with dark-cupreous stripes at the elytral intervals 2 and 4. Occasionally 1st and 7th intervals green. Ventral side cupreous or whitish-cupreous with scattered greenish scales; vertex wider [FW/ELD average: (0.813) in O. amoenus (0.77)]; funicular segments 3–7 rather oblong (3rd—1.54 x, 7th –1.25 x as long as wide; in O. amoenus 3rd—1.50 x, 7th –1.10 x as long as wide); subscutellar callosity oblong-egg-shaped, strongly convex.

Description.

Measurements. BL f: 4.22–4.77 (4.49) mm, BW f: 1.97–2.42 (2.19), BH f: 1.77–2.12 (1.94) mm.

Vestiture. Scales round, flat. Setae of head and body slender, truncate, form rows along lateral edges of epifrons (suberect) and above the eyes (erect). Subocular row consists of 2–3 setae. Pronotum evenly setose, without anterior setal fringe. Posterior setal fringe consists of spatulate setae, partly hidden by posterior edge of pronotum. Elytral intervals 2, 4, 6 with distinct row of setae.

Coloration. Background scaling red-brown; striped pattern formed by brown, cupreous and green scales. Dark and pale scales both with slightly pronounced pearl shine. Head dorsal surface cupreous-brown, without stripes, temples green or red-brown. Pronotum with cupreous-brown background scaling and 4 indistinct longitudinal deep-brown stripes (2 thin median stripes and 2 broad lateral stripes). Elytra background scaling cupreous with dark-cupreous stripes at the elytral intervals 2 and 4. Occasionally 1st and 7th intervals green. Ventral side cupreous or whitish-cupreous with scattered greenish scales. Femora and tibiae brown-cupreous, femora with transverse brown band in the middle.

Head. Rostrum almost as long as wide [RL/RW: 0.96–1.06 (1)], parallel-sided. Pterygia not extended beyond contour of rostrum. Antennal sockets dorsal. Lateral carinae convex. Epifrons very narrow, parallel-sided, at the level of antennal articulation 1.78 x narrower than vertex, distinctly sloping at sides, with convex median carina (completely concealed by scales). Transverse sulcus deep, concealed by dense scaling at dorsal surface and at sides. Anterior portion of epifrons not steep, without median sulcus. Epistome convex, broad, arcuate, delimited by narrow carina, bears 2 tiny epistomal setae. Eyes sublateral, large, orbicular, flat, delimited by glabrous convex ring [FW/ELD: 0.77–0.86 (0.81)].

Antennae. Scape extended behind anterior edge of pronotum, reaches anterior 1/3, weakly, evenly curved, thick. Funicular segment 1 shorter than 2nd; segments 3–7 oblong (3rd—1.54 x as long as wide; 7th—1.25 x as long as wide).

Thorax. Pronotum strongly transverse [PL/PW: 0.80–0.87 (0.84)], evenly slightly convex at sides, constricted at apex. Lateral longitudinal carina significantly developed. Disc weakly convex longitudinally and transversally. Tergosternal suture complete. Metanepisternal suture obsolete posteriorly.

Elytra. Cordate, anterior edge arcuate, vertical, narrowly rounded [EL/EW: 1.32–1.39 (1.36)]; disc in male moderately in female strongly convex [EL/BH: 1.49–1.58 (1.53)]; posterior declivity evenly sloping; elytral apex narrowly rounded, almost acute. Subscutellar callosity oblong-egg-shaped, strongly convex, without tubercles.

Legs. Protibiae and mesotibiae curved, not widened at the apex. Interior edge weakly C-shaped with large teeth in distal portion. Metatibiae with large teeth on interior edge. Mucro well developed, thorn-shaped, acute. Setal comb of protibiae consists of sparse 8–9 black short setae not extending beyond external edge of tibiae, partly hidden by spatulate setae. Bevel of metatibiae narrowly enclosed; its surface bare. Tarsi robust; setose pelma well developed; tarsomere 2 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 arcuate. 2nd ventrite 2 x as long as 3rd one, posterior margin of 2nd ventrite straight. 5th ventrite weakly convex near the apex; apical edge in male broadly rounded, in female narrowly rounded.

Male genitalia. Male unknown.

Female genitalia. Spermatheca moderately sclerotized, with short broad ramus, collum slender, as long as ramus; corpus large, strongly swollen; cornus slender, extended beyond corpus. Spermathecal duct forms bubbleshaped reservoire at distal end ( Fig. 354). Tergite 8 narrowly-subtrapezoid, apically acute, with curved 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 large.

Distribution. Tanzania: West Usambara Mountains (Ambangulu Forest), East Usambara (Amani Nature Reserve) ( Fig. 368).

Bionomics. Montane forests. Recorded from Cinchona tree plantation.

Material examined. Tanzania: Holotype, ♀ ( BMNH) Tanzania , Korogwe, Ambangulu Estates, B. Shott leg., 6.vi.1976, 1100 m a.s.l., on Cinchona ; Paratypes: 1♀ ( BMNH) labeled as holotype ; 1♀ ( BMNH) “Tanganyika / Amani / 7.xii.1935 ”, “ N.L.H. Krauss / B.M. 1952-38”; 1♀ ( BMNH) Amani / G.E.A. / xii 1912 / Dr Morstatt ”, “ G.A.K. Marshall / coll / B.M. 1950-255”, “ Oncophyes sp.n. ”

Etymology. The name is a Latin adjective meaning “resembling Cadoderus ”.