Lepidocyrtus (Setogaster) kuakea Christiansen & Bellinger, 1992

Mateos, Eduardo & Greenslade, Penelope, 2015, Towards understanding Lepidocyrtus Bourlet, 1839 (Collembola, Entomobryidae) I: diagnosis of the subgenus Setogaster, new records and redescriptions of species, Zootaxa 4044 (1), pp. 105-129 : 119-121

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Lepidocyrtus (Setogaster) kuakea Christiansen & Bellinger, 1992

comb. nov.

Lepidocyrtus (Setogaster) kuakea Christiansen & Bellinger, 1992 comb. nov.

Figs 4 View FIGURES 1 – 8 and 43–48 View FIGURES 43 – 48 , Tabs 2–3

Material examined. One paratype on slide (code 6793). HAWAIIAN ISLANDS, Maui, Iao Valley State Park, 20.880864 N 156.544622 W, 284 m asl, 2.vii. 1982, K. Christiansen, deposited at SAM.

Description. Body length (without head and furca) 0.45 mm. Mesothorax not projecting over the head. Body color yellow to mottled with blue, with pale blue on ant-II-III-IV and eye patches, and dark pigmented eyes and internal spot ( Fig. 4 View FIGURES 1 – 8 ). Body dorsoventrally compressed. Antenna, legs, ventral tube and dorsal region of the furca without scales. Basis of ant.I dorsally and ventrally with three microchaetae arranged in triangle. Ant.III organ composed of two subcylindrical sensory rods partially covered by integumentary fold. Ant.IV with small subapical T-chaeta; without apical bulb.

Ciliated prelabral chaetae and smooth labral chaetae in typical number of 4 /5,5,4; chaetae of apical row thicker than those in other rows. Closed inverted V-shaped labral apical intrusion. Lateral process ( sensu Fjellberg 1999 ) of outer labial papilla short, tip not reaching apex of papilla.

Dorsal macrochaetae formula such as AoA 2 s A 2 A 4 M 2 /00/01 *00+ 3, with A 4 as smooth short macrochaeta ( Fig. 43 View FIGURES 43 – 48 ). Eyes and interocular chaetotaxy not seen (complete area darkly pigmented). Th.II–III and abd.I dorsal chaetotaxy the same as for S. nigrofasciatus (see Figs 19–21 View FIGURES 19 – 21 ). Abd.II chaetotaxy as in Fig. 44 View FIGURES 43 – 48 ; chaetae ml and a 2 p absent; chaeta a 2 smooth mesochaeta; chaeta m 3 short, ciliated macrochaeta (chaeta marked with * in the dorsal macrochaetal formula); m 5 mesochaeta. Abd.III chaetotaxy as in Fig. 45 View FIGURES 43 – 48 ; chaeta d 3 absent; chaetae mi, ml, a 2, li, lm, ll, a 6, im, em fan-shaped, of which a 6 and li larger (paddle-like); chaeta am 6 strongly ciliated and thicker than other tergital mesochaetae; without lateral tuft of filaments. Abd.IV chaetotaxy as in Fig. 46 View FIGURES 43 – 48 ; bothriotrichumT 2 without accessory chaeta s; chaetae m, D 1, pi and pe fan-shaped, of which m and D 1 larger (paddle-like); chaeta a bilobed-fan-shaped (see Fig. 26 View FIGURES 25 – 26 ); C 1 mesochaeta; F 2 and F 3 smooth mesochaetae, with F 3 double in length than F 2; macrochaeta B 6 with socket of minor diameter than macrochaetae B 4 and B 5; with at least two dorsal long Schaetae (region not clear on slide), with two lateral pseudopori located externally to chaetae r 4 –r 5.

Trochanteral organ, unguis ( Fig. 47 View FIGURES 43 – 48 ), ventral tube, and furca as original description (see Christiansen & Bellinger 1992), except for presence of spinelet in the basal mucronal spine ( Fig. 48 View FIGURES 43 – 48 ); dentes with a little (difficult to observe) rounded basal tubercle.

Discussion. The presence of small rounded dental tubercle and spinelet on basal mucronal spine allow us to assign this specimen to the subgenus Setogaster. In the original description of the species Christiansen & Bellinger (1992) described the mucronal basal spine without spinelet, but it was a misinterpretation of the holotype (Christiansen pers com) and the spinelet is clearly present.


South African Museum