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Mairata itatiaiensis

Calvanese, Brescovit & Bonato, 2019

GBIF:160406561

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ABOUT

Descriptions(6)

(Figs 3 C, 33 A, F, 35 – 36, 40 D, 41 G, 44 M – N)

Calvanese, Victor C., Brescovit, Antonio D., Bonato, Lucio (2019): Revision of the Neotropical species of Aphilodontinae (Geophilomorpha, Geophilidae), with eight new species and a first phylogenetic analysis of the subfamily. Zootaxa 4698 (1): 1-72, DOI: 10.11646/zootaxa.4698.1.1

Description of holotype. Female (IBSP 6178). Entire body: length 30, maximum width 1.05. Cephalic plate: sub-rectangular, length 0.68 and width 0.59 (length / width ratio 1.15), with little SE sparse. Antenna: length 1.57, ca. 2.3 times as long as cephalic plate; AA II – XIII length / width ratio 0.70 – 0.95; LAA ca. 3.0 times as long as AA XIII. Clypeus: 4 + 4 LS, 1 + 1 PS, 8 + 8 SCS. Mandible: PL with 27 denticles. First maxillae: TFM length 0.08 and width 0.06; DA with 3 apical and 2 subapical SL; MPC with 2 – 4 apical and 1 – 2 subapical SL. Second maxillae: left TSM length 0.13 (1.65 times as long as TFM) and maximum width (basal margin) 0.08; left T 3 length 0.02 (0.66 times as long as T 2) and width 0.02 (0.47 times as long as T 2); both TSM with 1 apical SE and 1 apical SL. Forcipular segment: FTE length 0.25 (0.37 times as long as cephalic plate) and width 0.65; FPT length 0.05 and width 0.50; FCX length 0.61 and width 0.67 (length / width ratio 0.91); FRL length 0.55, extending beyond the anterior margin of cephalic plate, and maximum width (middle part of TFF) 0.27; FRL with two denticles in TFF and one in TI; FD 1 relatively large, pointed and without SE; FD 2 pointed and with 3 subapical SE; FD 3 bilobed and with 3 subapical SE; TA 0.76 times as long as TFF and with small basal DTA. Walking legs: 63 pairs; left FL length 0.8, 0.9 times as long as the second leg; left leg 31 length 0.93. Tergum from the first to penultimate leg-bearing segment: TE 31 length 0.40 and width 0.70 (length / width ratio 0.57), with one anterior row of 16 SE and one posterior row of 7 SE, and little SE scattered between rows; PT 0.5 times as long as TE and with two parallel rows of 7 – 8 SE. Sternum from the first to penultimate leg-bearing segment: STF rounded, wider than long; ST 31 length 0.45 and width 0.41 (length / width ratio 1.09). Ultimate leg-bearing segment: MTL trapezoidal, length 0.25 and maximum width 0.27 (length / width ratio 0.92); UPS exposed and suppressed in middle part. Ultimate legs: thickened when compared to penultimate leg, length 1.07, 1.1 times as long as penultimate leg; each CXP with 16 – 20 little COP, all sparse. Postpedal segments: GF with 2 + 2 distal SE. Known variation. Male: 61 leg-bearing segments; UPS exposed and not suppressed in the middle part; each CXP with 10 – 12 COP; GM biarticulated; GM 1 with 7 – 8 SE in one row; GM 2 with 8 – 10 scattered SE.

Diagnosis. A species of Mairata n. gen. with: around 61 – 63 leg-bearing segments; known body length in adults 22 – 41 mm; distal denticle of forcipular trochanteroprefemur without apical setae (Fig. 35 A); coxopleuron with 10 – 20 coxal pores in adults, sparse, in both males and females (Figs 35 B, 36 D – E); females with ultimate legs slightly thickened when compared to penultimate leg (Fig. 36 D). Recorded specimens: 11, including 7 ♀ and 4 ♂, from a single locality.

Distribution. Brazil — Rio de Janeiro: Itatiaia.

Etymology. The epithet is an adjective, referring to the type locality.

Type specimens. Holotype: ♀, from Parque Nacional de Itatiaia, Itatiaia, Rio de Janeiro, Brazil, 16 / 12 / 2017, V. Calvanese & A. Silva col., deposited in IBSP 6177. Paratypes: 2 ♀ and 2 ♂, same data as holotype, deposited in IBSP 6178. Type locality. Brazil: Rio de Janeiro: Itatiaia, Parque Nacional de Itatiaia: 22 ° 22 ′ 31 ″ S, 44 ° 39 ′ 44 ″ W. Material examined. BRAZIL: Rio de Janeiro: Itatiaia, Parque Nacional de Itatiaia (22 ° 22 ′ 31 ″ S, 44 ° 39 ′ 44 ″ W), 4 – 17 / 12 / 2017, V. Calvanese & A. Silva col., 1 ♂ (IBSP 6179), 1 ♀ (IBSP 6180), 1 ♂ (IBSP 6181), 2 ♀ (IBSP 6182) 1 ♀ (IBSP 6183); 16 / 12 / 2017, V. Calvanese & A. Silva col., 1 ♀ [holotype] (IBSP 6177), 2 ♀ and 2 ♂ [paratypes] (IBSP 6178).

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CLASSIFICATION

Taxonomic Classification Tree

AnimaliaArthropodaChilopodaGeophilomorphaGeophilidaeMairataMairata itatiaiensis

Mairata itatiaiensis

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Media Files(7)

FIGURE 3. A–D, Aphilodontinae habitus, dorsal: A, Aphilodon silvestrii n. sp. (IBSP 3665); B, Mecophilus neotropicus Silvestri, 1909 (MNHG); C, Mairata itatiaiensis n. sp. (IBSP 6178); D, Philacroterium brevipes (Verhoeff, 1938) n. comb. (KZN 5033). Scale bars: 1 mm (A–D).