Sphrigodellus nasutus Yunakov, 2012

Yunakov, Nikolai, 2012, 3535, Zootaxa 3535, pp. 1-104 : 30-31

Sphrigodellus nasutus Yunakov , sp. n.

(figs 35, 36, 205–216, 365, 366, 369, 370)

Diagnosis. Similar to S. lepidus , S. usambaricus sp. n., and S. gusarovi sp. n. in general appearance. From S. lepidus and S. usambaricus sp. n. it differs by antennae with very long, piliform, erect setae, without scales; body scales not concave, not overlapping; male protibiae curved inwards, interior edge serrate, metatibiae with long and dense grooming brush, without scales; metatibial mucro tiny; temples with longitudinal callosity; setae of anterior fridge weakly differ from ones on pronotal disc; setae on elytral intervals sparse and narrow; tarsi without scales; tarsomere 2 triangular, as long as wide. From S. usambaricus sp. n. it additionally differs by median lobe not constricted on the middle part, with strong ridge at the base, with apex attenuate; spermatheca with ramus strongly swollen; tergite 8 subtrapezoid, with curved fringe of multiple, tenuous, short setae at the apex. From S. gusarovi sp. n. this species differs by subocular row consisting of 6–8 setae; elytral setae long (half as long as interval width); rostrum strongly elongate [RL/RW: 1.24–1.39 (1.34)]; eyes highest posteriorly; pronotal disc strongly convex longitudinally and transversally; male elytra oblong-oval [EL/EW m: 1.53–1.56 (1.55)]; tarsomere 2 as long as wide; median lobe parallel-sided (not constricted), in apical 1/4 evenly narrowed anteriorly; apex dorsoventrally slightly flattened; lateral edges of median lobe partly fused, form longitudinal convexity in basal half; preputial opening oblong-ovate.

Description.

Measurements. BL: 3.50–4.40 (3.69) mm, BW: 1.44–2.25 (1.65) mm, BH: 1.30–1.80 (1.42) mm.

Vestiture. Body densely covered with serried (not overlapping) round weakly convex scales, setose. Setae of head form rows along lateral edges of epifrons (recumbent or subrecumbent) and above the eyes (erect). Subocular row consists of 6–8 setae. Anterior setal fringe consists of 6 (1+1+1+1+1+1) erect setae; they weakly differ from ones on pronotal disc. Posterior setal fringe consists of spatulate setae, partly hidden by posterior edge of pronotum. Elytral intervals 1–6 with distinct row of setae. Anterior half of elytra with rather short suberect setae (half as long as interval width), posterior declivity with long, strongly erect, thick, truncate setae (as long as interval width). Ventral side rather sparsely squamose. Ventrites with scattered scales; male anal ventrite with long hairs in apical portion. Metapleura densely squamose but scales not serried; basisternum and mesobasisternum bare. Antennal scape setose, without scales; setae very long, slender, acute, and erect. Funicle setose, without scales; setae erect, 1.7 x as long as funicular segment 7. Femora and tibiae external surface covered with serried scales and suberect setae, internal surface with sparse piliform scales and hairs, distal portion of tibiae internal surface without scales; setae on legs slender, acute. Male metatibiae with dense grooming brush; hairs very long. Female metatibiae with less pronounced but distinct grooming brush. Tarsi setose.

Coloration. Integument of body deep-brown to black, of legs deep-brown. Background scaling consists of deep-brown, brown and cupreous scales; striped pattern formed by cupreous and green scales. Dark and pale scales both with slightly pronounced pearl shine. Head brownish-cupreous; anterior portion of epifrons, temples, genae, and articulation surface covered with green scales. Pronotum with deep-brown background scaling and 5 broad longitudinal cupreous stripes: 1 discal and 4 lateral. Green scales form narrow stripe along anterior edge, small basal spot and two transverse broad stripes along dorsolateral-portion of posterior edge of pronotum. These stripes are complementary to two green narrow stripes on anterior edge of elytra. Elytra with brownish-cupreous background scaling, alternate striped pattern obscure. Elytral intervals 3, 4, 8, 9 with short green stripes in apical portion, 5, 6, 10, 11 entirely green; 6th interval with black spot anteriorly of middle. Ventral side with sparse green scales. Sides of metasternum cupreous. Femora brown-cupreous, proximal portion and ventral surface with green scales. Tibiae external surface cupreous.

Head. Rostrum strongly elongate [RL/RW: 1.24–1.39 (1.34)], parallel-sided. Pterygia not extended beyond contour of rostrum. Antennal sockets dorsal. Antennifers half-visible. Epifrons distinctly sinuate in middle, at the level of antennal articulation 1.5 x as wide as vertex width, distinctly sloping at sides and very steep sloping anteriorly, without median sulcus or carina. Transverse sulcus deep, concealed by dense scaling at dorsal surface and partly open at sides. Anterior portion of epifrons almost vertical with median sulcus. Epistome vestigial, very narrow, transverse, delimited by narrow carina, bears 8–9 epistomal setae. Eyes broadly oval, sublateral, strongly convex, highest posteriorly [FW/ELD: 1.10–1.25 (1.18)]. Vertex flat, broad. Frontal fovea concealed by scales. Occiput not constricted.

Antennae. Scape extended behind anterior edge of pronotum, weakly evenly curved and widened, swollen in distal portion. 1st funicular segment longer and wider than 2nd; 3rd–7th oblong. Club egg-shaped.

Thorax. Pronotum transverse [PL/PW: 0.89–0.98 (0.96)], evenly slightly convex at sides, not constricted, widest anteriorly of the middle. Disc strongly convex longitudinally and transversally. Posterior edge straight. Tergosternal suture complete. Metanepisternal suture obsolete posteriorly.

Elytra. in male oblong-oval, in female oval [EL/EW: 1.32–1.56 (1.44)]; anterior declivity arcuate, abrupt, sharpen; disc in male flat, in female convex [EL/BH: 1.53–1.84 (1.65)]. Subscutellar callosity very short, with two tiny tubercles.

Legs. Protibiae and mesotibiae almost straight, not widened at the apex, interior edge C-shaped in distal portion serrate. Meso- and metatibiae serrate on interior edge. Mucro well developed, thorn-shaped, acute. Setal comb of protibiae consists of sparse 5–8 black setae not extending beyond external edge of tibiae. Bevel of metatibiae narrowly enclosed, its surface partly setose. Tarsi robust; tarsomere 2 triangular, 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 2 x as long as 3rd one, posterior margin of 2nd ventrite straight. 5th ventrite flat, without depression near the apex, apical edge in male broadly rounded, in female acute.

Male genitalia. Median lobe parallel-sided, in apical 1/4 evenly narrowed anteriorly; apex attenuate, narrowly rounded, dorso-ventrally slightly flattened; as long as apodeme. Lateral edges of median lobe form longitudinal convexity in basal half. Preputial opening oblong-ovate. Internal sac without spiculate fields, with large, long aggonoporium consisting of two stick-shaped lobes connected proximally by transverse bridge. Ostium triangular, moderately sclerotized. Ligulae membranous. Parameres absent, basal piece of tegmen broad, tegminal apodeme 0.75 x as long as apodemes of median lobe.

Female genitalia. Styli well developed, stick-shaped, bearing 3 setae. Spermatheca moderately sclerotized, with swollen ramus, collum slender 2 x as long as ramus. Corpus small, not swollen. Cornus slender, extended beyond corpus. Tergite 8 subtrapezoid, 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 not developed.

Distribution. Tanzania: North Pare Mountains (Kindoroko Forest Reserve, Kiverenge Forest Reserve, Kizungoa Mountain Reserve) (figs 365, 366)

Bionomics. Submontane rain forests and montane cloud forests; 1900–2400 m a.s.l. Trees and shrubs canopy (figs 369, 370).

Material examined. Tanzania, Kilimanjaro Reg .: 1♂, 4♀, including holotype male ( ZMUN) TZ-10-34, North Pare Mts., Kilomeni vill. env., Kindoroko Forest Res., S3 45.200 –531 E37 38.709 –923, h = 1904– 1796 m, rain forest, beaten, N.N. Yunakov leg., 05.xi.2010 ; 1♂ ( ZMUN) TZ-10-31, North Pare Mts., Kilomeni vill. env., Kindoroko Forest Reserve , S3 45.200 E37 38.709, h = 1904 m, rain forest, beaten, N.N. Yunakov leg., 05.xi.2010 ; 1♂, 2♀ ( ZMUN) TZ-11-31, North Pare Mts., Kindoroko Forest Reserve , S3 45.265 E37 38.751 h = 1889 m, montane rain forest, beating, N.N. Yunakov leg., 13.v.2011 ; 5♂, 3♀ ( ZMUN) TZ-11-32, North Pare Mts., Kindoroko Forest Reserve , S3 45.096 E37 38.887 h = 1920 m, montane rain forest, beating, N.N. Yunakov leg., 13.v.2011 ; 1♀ ( ZMUN) TZ-11-48a, North Pare Mts., Kiverenge Forest Reserve , S3 48.778 E37 38.800, h = 1654 m, montane rain forest, beating, N.N. Yunakov leg., 15.v.2011 ; 2♂, 2♀ ( ZMUN) TZ-11-61, North Pare Mts., Kizungoa Mt. R., S3 57.151 E37 41.694, h = 1688 m, montane rain forest, beating, N.N. Yunakov leg., 18.v.2011 .

Etymology. The name is a Latin adjective meaning “having pronounced nose”.