Cyclocaccus intermediatus Hisamatsu, 2016

Hisamatsu, Sadatomo, Bayless, Victoria M. & Carlton, Christopher E., 2016, Revision ofCyclocaccusSharp (Coleoptera: Nitidulidae: Nitidulinae), The Coleopterists Bulletin 70 (4), pp. 825-870 : 825-870

Cyclocaccus intermediatus Hisamatsu , new species

( Figs. 15G , 16K , 21 , Map 5)

Type Series. Holotype ( SEMC): ♂, ‘PERU: Tambopata Prov. / Madre de Dios Dpto. / 15 km NE Puerto // Maldonado, Reserva / Cuzco Amazónico / 12°33′S, 69°03′W / 200 m, Plot #Z2U19 // 2 July 1989, J. S. Ashe, / R. A. Leschen #366 / ex., flight intercept trap’ . Paratype: [ PERU] 1♀, Cocha Salvador, Reserved Zone, Manu National Park , Marde de Dios, 310 m, ex: flight intercept trap, 12°00′13”S, 71°31′36″W, 20–21. X. 2000, R. Brooks leg. ( SEMC) .

Etymology. The epithet of this new species is derived from the somewhat intermediate character between congeners within the C. laeticulus speciesgroup and C. morulus species-group.

Diagnosis. This species differs from other congeners by the following combination of characters: body dark reddish brown; apical margin of abdominal tergite VII widely rounded; metathoracic discrimen absent; subcoxal lines on abdominal sternite III absent; pro- and mesotarsal segments II and III of males moderately dilated; tegmen long, subparallel-sided at basal half, then strongly convergent apically; TL/TW = 2.32 (n = 1); apical margin of tegmen narrowly rounded in ventral view; median lobe subparallel-sided; apical margin of median lobe truncate; apices of gonocoxites square, with apicolateral corners widely rounded.

Similar Species. This new species is similar to C. morulus in having a dark reddish brown body coloration, but can be distinguished by the following combination of characters: apical margin of abdominal tergite VII widely rounded; metathoracic discrimen absent; metanepisternum densely punctate; abdominal sternite III without subcoxal lines; tegmen strongly convergent apically from basal half in ventral view.

Description. Length 1.88–2.03 (1.95) mm, width 1.53–1.70 (1.62) mm, depth 0.92–1.02 (0.97) mm (n = 2). Male. Body ( Fig. 15G ) oval; dorsal disc dark reddish brown; apical half of head, mouthparts, antennal segments I–VIII, lateral margins of pronotum, venter of head, hypomera, elytral epipleura, and legs paler. Head: Dorsal disc densely punctate; interspaces reticulate. Labrum feebly notched at middle. Antenna ( Fig. 21C ) with club long and large, ACL/ASI-VIII = 0.77 (n = 1); antennal segment XI with 2 oval antennal sensillae; approximate ratio of each segment (n = 1) 4.23: 2.70: 2.30: 1.37: 1.73: 1.20: 1.00: 1.55: 3.00: 3.31: 6.27. Pronotum: 3.24–3.28 (3.26) times as wide as long (n = 2); disc densely punctate; disc with 2 kinds of punctures, large punctures, slightly smaller than eye-facet, and minute punctures; interspaces reticulate. Scutellum with disc densely punctate; punctures on disc similar to those of pronotum; interspaces reticulate. Elytra: 0.93–0.96 (0.94) times as long as wide (n = 2), 3.54–3.61 (3.58) times as long as pronotum (n = 2), subparallel-sided from base to basal 1/3; each elytron with 9 regular rows of punctures about as large as eye facet; punctures on interstices similar to those on pronotum; abdominal tergite VII with apical margin widely rounded. Venter: Prosternum strongly convex along midline, with a tuft of setae at middle. Metaventrite strongly convex, with axillary space; metathoracic discrimen absent. Metanepisternum densely punctate. Abdominal sternite III without subcoxal lines; lateral margins of abdominal sternite VII serrate. Legs: Slender; pro- and mesotarsal segments I–III moderately dilated; tarsal claws simple. Genitalia: Tegmen ( Fig. 21A ) subparallel-sided at basal 1/2, then strongly convergent apically; TL/TW = 2.32 (n = 1); apical margin of tegmen narrowly rounded in ventral view; median lobe ( Fig. 21B ) subparallelsided in ventral view; apical margin of median lobe truncate, shallowly emarginate at middle in ventral view; sclerites of internal sac as in Fig. 21B .

Female. Prosternum without tuft of setae at middle. Pro- and mesotarsal segments I–III more weakly dilated than those of males. Ovipositor ( Fig. 21D ) with squared apices of gonocoxites; apicolateral corners of gonocoxites widely rounded.

Distribution. Peru (Map 5).

Comments. Cyclocaccus intermediatus has some characters of the C. laeticulus species-group, as follows: apical margin of abdominal tergite VII widely rounded; subcoxal lines on abdominal sternite III absent; pro- and mesotarsal segments II and III of males moderately dilated; and tegmen narrowing to apically in ventral view. However, it differs in the following combination of characters that constitute the basis for including it in the C. morulus species-group: prosternum strongly convex along midline, with tuft of setae at middle; metanepisternum densely punctate; lateral margins of abdominal sternite VII serrate; apices of gonocoxites square.

Figures

Fig. 15. Dorsal habitus of Cyclocaccus species in the C. morulus species-group. A) C. lescheni, holotype, B) C. stonyx, holotype, Costa Rica, C) C. stonyx, Panama, D) C. stonyx, Ecuador, E) C. morulus, holotype, F) C. smileyeyes, holotype, Bolivia, G) C. intermediatus, holotype. Scale bars = 1 mm.

Fig. 16. Diagnostic characters of the C. morulus species-group. Cyclocaccus morulus: A) Ventral habitus, B) Head, dorsal view, C) Head, ventral view, D) Labrum, E) Mentum and labium, ventral view, F) Right maxilla, dorsal view, G) Right mandible, dorsal view, H) Scutellum, I) Male abdominal tergite VII, J) Male abdominal sternite VII. Cyclocaccus intermediatus: K) Male abdominal tergite VII. Cyclocaccus morulus: L) Metendosternite, dorsal view, M) Male protibia and protarsus, dorsal view, N) Male mesotibia and mesotarsus, dorsal view, O) Male metatibia and metatarsus, dorsal view, P) Male abdominal tergite VIII and spiculum gastrale, ventral view, Q) Left metanepisternum. Scale bars: A = 1 mm; B–C, I–K, P–Q = 0.5 mm; D–H, L–O = 0.1 mm.

Fig. 21. Cyclocaccus intermediatus, Peru. A) Tegmen, holotype, ventral view, B) Median lobe, holotype, ventral view, C) Right antenna, holotype, ventral view, D) Ovipositor. Scale bars = 0.1 mm.