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HOLOTYPE WORKER. Measurements: HL 0.56, HW 0.43, HS 0.495, SL 0.36, PrW 0.31, WL 0.71, HFL 0.34, PeNL 0.14, PeH 0.33, PeNW 0.24, PeS 0.237. Indices: CI 77, SI 84, PeNI 77, LPeI 42, DPeI 171.
Matching the description of fatigaHNS and with indices in the same range, but size slightly larger (compare measurements ). H. juxtaHNS is immediately distinguished from fatigaHNS by the condition of the cross-ribs at the base of the cinctus of the second gastral tergite. In fatigaHNS (and also in lassaHNS) the cross-ribs are short, fine, delicately constructed and densely packed. In contrast, the cross-ribs of juxtaHNS are long and thick, coarse and very conspicuous, and are distinctly separated by broad, longitudinal spaces. In addition, in juxtaHNS the anterior and posterior faces of the petiole node in profile are almost parallel, only minutely convergent dorsally, and the maximum width of the first gastral tergite in dorsal view is equal to the width of the second tergite at its midlength (ca 0.38).
Holotype worker. Ethiopia: Welega Region, Nekemte, between Nekemte & Gimbi (1350 m.) c/o Kolobo, 26.vii.2002, Museo Zoologico “ La Specola ”, num. MAG. 2484 (A. Sforzi & L. Bartolozzi) (MSNF).
H. juxtaHNS is known from just a single specimen but is obviously closely related to fatigaHNS (and lassaHNS); the contrast between their fine, superficial, closely packed, short cross-ribs and the long, strong, widely spaced, coarse cross-ribs of juxtaHNS, is striking. See also the note under jocosaHNS, above.
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