Laniatores

Gainett, Guilherme, Sharma, Prashant P, Fernandes, Nathália, Pinto-Da-Rocha, Ricardo, Giribet, Gonzalo & Willemart, Rodrigo Hirata, 2019, Evolution of a sensory cluster on the legs of Opiliones (Arachnida) informs multi-level phylogenetic relationships, Zoological Journal of the Linnean Society 187 (1), pp. 143-165 : 146

Laniatores

All investigated species of Laniatores , in 28 families, possess three distinct sensilla on the distal-third end of the distalmost tarsomere of leg pairs I and II, roughly aligned along the sagittal axis ( Fig. 2 ). The only exception is Sandokan truncatus Thorell, 1891 ( Sandokanidae ), in which only the distal sensillum was clearly identified in the corresponding position. The distal sensillum has been termed the ‘hooded sensillum’ ( Gainett et al., 2017b) and the mid and proximal sensilla have been termed ‘sensilla basiconica’ (after Willemart et al., 2007, 2009). Below, we describe the variation observed in the morphology and topology of these three sensilla on the distalmost tarsomeres I and II.

Figures

Figure 2. Laniatores. Triad on the sensory field formed by two sensilla basiconica (proximal and middle sensilla) and one hooded sensillum (distal sensillum) (dotted area) on the distalmost tarsomeres I of selected families. A, Erebomaster flavescens flavescens (Travuniidae), undetermined sex. B, Remyus sp. (Phalangodidae), female. C, Pseudoepedanus doiensis (Epedanidae), male. D, Avima octomaculata (Agoristenidae), male. E, Heteromitobates discolor (Gonyleptidae), male. F, Stygnomma bispinatum (Stygnommatidae), male.