Rhammatopoda calabaza, Gorochov, 2018

Rhammatopoda calabaza View in CoL sp. nov.

( Figs 1–8 View Figs 1–16 )

Etymology. This species is named after the Calabaza Village situated near its type locality.

Type material. Holotype – male, PERU: Junin Department, Satipo Prov. , ~ 40 km NE of Satipo Town , environs of Calabaza Vill. , 11.507832°S, 74.811745°W, 2000–2200 m, on leaf of low bush in disturbed forest near river, at night, 1–4 December 2017, A. Gorochov, G. Irisov. Paratypes: 3 females, same data as for holotype.

Description. Male (holotype). General appearance very similar to that of Rh. opilionoides Redtenbacher, 1892 : body slender; head rather high but not wide, with eyes medium-sized and almost globular, ocelli absent, rostrum having only upper tubercle which somewhat dorsoventrally flattened and bifurcated in anterior part ( Fig. 1 View Figs 1–16 ), dorsum near rostrum having a pair of irregular impressions, face between antennal cavities moderately narrow and having low vertical keel running to rostral tubercle and almost lamellar above these cavities ( Figs 1, 2 View Figs 1–16 ), border of each antennal cavity having rather large medial lobule, and scape simple but large (almost as wide as eye, and approximately 1.5 times as long as eye); pronotum small (rather short and low), with two more or less transverse grooves (deeper anterior groove and almost V-shaped posterior one) as well as with angular anteromedian tubercle and three pairs of rather short and almost finger-like dorsal tubercles behind anterior groove (surface between these tubercles non-smooth, and area between most posterior tubercles widest and having small posteromedian denticle; Fig. 2 View Figs 1–16 ); meso- and metanotum 1.5–2 times as short as pronotum, with non-smooth dorsal surface, keel-like lateral edges, and almost conic posteromedian convexity; thoracic pleurites with spine-like tubercle located in ventral half of each episternum and with keel-like longitudinal convexities along dorsal edges of pterothoracic pleurites; each thoracic sternite with a pair of spine-like tubercles (prothoracic tubercles rather small); legs thin and very long (hind leg longer than all other legs but not adapted to jumps and with non-smooth surface of dorsal femoral half), with spinule-like ventral tubercle on each coxa, additional anterodorsal spinule on fore coxa, three outer and four inner slightly flattened spines on fore femur, four outer and two inner similar spines on middle femur, 11–12 outer and nine inner similar spines on hind femur, a pair of somewhat longer apical spines on each femur ( Fig. 3 View Figs 1–16 ), oval and moderately large both tympana of fore tibia, and rather numerous spinules on all tibiae (ventral spinules more numerous than dorsal ones, especially in distal part of tibiae; but in proximal half of hind tibia, dorsal spinules more numerous than ventral ones); all wings completely absent ( Fig. 2 View Figs 1–16 ); abdominal tergites simple, but last one with angular posteromedian notch; epiproct small, rounded; cerci rather thin and short, arcuately curved to each other, and with very short conical spinule at each apex ( Fig. 4 View Figs 1–16 ); genital plate elongate, but with deep and wide posteromedian notch, short conical styles, and small spinule-like processes near styles (between them) ( Fig. 5 View Figs 1–16 ); genitalia completely membranous. However, some characters of head, pronotum, legs and abdomen somewhat different than those of other congeners: rostrum of head slightly longer and with deeper anteromedian notch than in Rh. oxapampa sp. nov. (for comparison see Figs 1, 2 and 9, 10 View Figs 1–16 ); pronotum with more smooth surface of most part of lateral lobes and with wider posterolateral pair of tubercles reaching posterior edge of pronotum (in Rh. oxapampa sp. nov., this part of pronotal lobes less smooth, and these tubercles thinner and not reaching posterior edge of pronotum; see Figs 2 and 10 View Figs 1–16 ); apical femoral spines longer (more clearly protruding beyond femoral apex than in this species; see Figs 3 and 11 View Figs 1–16 ); posteromedian notch of last tergite deeper than in this species (see Figs 4 and 12 View Figs 1–16 ); posteromedian notch of genital plate significantly not reaching middle of this plate (in Rh. opilionoides and Rh. oxapampa sp. nov., it reaching this middle; see Figs 5, 13, 15 View Figs 1–16 ). Body colouration also similar to that of Rh. opilionoides , yellowish (greenish in living condition) but with light brown, brown and whitish areas as well as blackish most part of genital plate ( Figs 1–5 View Figs 1–16 ).

Female. Structure of body similar to that of male, but anteromedian notch of head rostrum slightly smaller ( Fig. 6 View Figs 1–16 ), number of spines on legs insignificantly varied, abdomen larger (thicker in anterior two thirds), last tergite barely notched, epiproct almost triangular, and colouration lighter ( Figs 6–8 View Figs 1–16 ); genital plate and ovipositor as in Figs 7, 8 View Figs 1–16 .

Length (mm). Body: male 16.0, female 22.0–24.0; pronotum: male 2.8, female 3.5–3.8; fore femora: male 14.3, female 14.0–14.8; hind femora: male 25.0–26.0, female 27.0–28.0; hind tibiae: male 27.0–28.0, female 29.0–31.0; ovipositor 11.0–11.6.

Comparison. Differences from the two other species of this genus are given above, in the description of Rh. calabaza sp. nov. The new species is most similar to Rh. opilionoides , but it differs from the latter in the posteromedian notch of male genital plate distinctly less deep (for comparison see Figs 5 and 15 View Figs 1–16 ). Possibly these congeners are only two subspecies of the same species, but Ph. opilionoides was described without indication of some important morphological characters and with insufficient data on its type locality ( Redtenbacher 1892: “ Peru ”).