Thaumamannia insolita, Guidoti & Montemayor & Campos & Guilbert, 2020

Thaumamannia insolita

Guidoti et al., sp. nov. ( Fig. 33 View Figure 33 )

lsid: urn:lsid:zoobank.org:act:D94DDB01-3100-4AF2-A8B1-B8A235C4CF22

Diagnosis: Thaumamannia insolita is a new species found to be sister to the other Thaumamannia species, while presenting a few traits shared with Anommatocoris . The inclination of the head, the differences in colour between the head and body, the enlarged edges of the tips in the anterior branch of the peritreme and the slender body are characters that distinguish this species from its congeners.

Description: Body: Brown, with scutellum and paranota borders light brown; head, antennae, rostrum and legs yellowish, except for clypeus, which is as brown as the body ( Fig. 33A View Figure 33 ). Head: Slightly declined, pubescent; antenniferous process almost half the scape length; pedicel subequal to basiflagellomere, these slightly bigger than scape and smaller than distiflagellomere; eyes reduced with few ommatidia, somehow triangular; bucculae roundish, border serrate, widest in the middle, two rows of small punctures, posterior border concave ( Fig. 33F View Figure 33 ); rostrum reaching at least the fourth abdominal segment ( Fig. 33B, C View Figure 33 ). Thorax: Pubescent; coarsely punctate, except for the callus region; anterior border straight; posterior convex; paranota explanate, smooth, not projected frontwards, with scale-like projections on its border giving it a serrate-like aspect; scutellum narrow, less than one-sixth of pronotum maximum width ( Fig. 33E View Figure 33 ); sternal laminae considerably narrow, punctate. Hemelytra: Entirely coriaceous and coleopteroid, ovate, pubescent; remarkably convex; carina-like vein extending from the anterior border to the posterior third of the hemelytra; deeply and entirely punctate, these bigger at anterior region, small at posterior third and even smaller at middle; costal area not punctate, anterior border round. Scent gland: Anterior branch gradually projected laterally, tip tilted horizontally, large, only slightly shorter than the rest of anterior branch, much more projected than base ( Fig. 33D View Figure 33 ), edges equally thick throughout its length; posterior branch straight, with only a slightly enlarged tip with a weak aspect of a cracked texture; sulcus prominent on both branches, fading only distally on the anterior branch tip; evaporatorium curved anteriorly, projected up to half of mesopleuron ( Figs 17A View Figure 17 – 33C View Figure 33 ).

Measurements: BL, 1.52; BW, 0.86; HL, 0.15; HW, 0.29; ID, 0.19; PL, 0.30; PW, 0.62; AS, 0.11; AP, 0.17; AB, 0.21 and AD, 0.30.

Etymology: This species confused the authors and could only be placed in a genus after the phylogenetic analysis. Due to its puzzled nature we considered this species insolitus, which is Latin for unusual or unaccustomed.

Distribution: Described from Pará, Brazil.

Material examined: Holotype xF: BRAZIL: Pará state. [ Hemiptera 6º P8 (E)] [GCLBN27] [Guidoti PhD – FR056] [Guidoti PhD – Vianaidinae 057] (GC).