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Mecophilus neotropicus

Silvestri, 1909

GBIF:160406585

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Descriptions(5)

(Figs 3 B, 29, 31, 40 E, 41 H)

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. Male (MCSG “ Vase type ”). Entire body: length 8, maximum width 0.2. Cephalic plate: trapezoidal, with posterior margin 1.5 times as wide as anterior margin; length 0.33 and maximum width (near posterior margin) 0.24 (length / width ratio 1.37). Antenna: length 0.56, 1.7 times as long as cephalic plate; AA II – XIII length / width ratio 0.44 – 0.95; LAA ca. 3.5 times as long as AA XIII. Clypeus: 2 + 2 LS, 1 + 1 PS, 5 + 5 SCS. Mandible: PL with about 20 denticles. First maxillae: TFM length 0.02 and width 0.01. Second maxillae: left TSM length 0.02 (ca. 1.1 times as long as TFM) and maximum width (basal margin) 0.01; T 3 with 1 large apical SE. Forcipular segment: FTE length 0.20 (0.83 times as long as cephalic plate) and width 0.18 (length / width ratio 1.1); FPT length 0.11 (0.55 times as long as cephalic plate) and width 0.10; FCX length 0.30 and width 0.21 (length / width ratio 1.4); FRL length 0.18, surpassing anterior margin of cephalic plate, and maximum width (basal margin) 0.09; FRL with 2 denticles in TFF and 1 in TI; FD 1 relatively large, pointed and with 1 apical SE; FD 2 pointed, with 2 large apical SE; FD 3 bilobate and relatively small, with 1 large apical plus 3 subapical SE; TA 0.61 times as long as TFF; DTA relatively small and positioned in median region of TA. Walking legs: 35 pairs; left FL length 0.17, 0.87 times as long as the second leg; left leg 17 length 0.20. Tergum from the first to penultimate leg-bearing segment: TE 17 length 0.13 and width 0.22 (length / width ratio 0.59), with one anterior row of 7 SE and one posterior row of 7 slightly smaller SE; PT 0.42 times as long as TE and with two parallel rows of 5 SE. Sternum from the first to penultimate leg-bearing segment: STF rectangular, length 0.14 long and width 0.09 (length / width ratio 1.52); ST 17 length 0.16 and width 0.11 (length / width ratio 1.45). Ultimate leg-bearing segment: MTL trapezoidal, length 0.07 and maximum width 0.11 (length / width ratio 0.66); UPS exposed and not divided, length 0.01 and width 0.11. Ultimate legs: with a single tarsal article and without terminal claw; slightly thickened when compared to penultimate leg, length 0.46, ca. 1.7 times as long as penultimate leg; each CXP with 4 little COP which are weakly grouped near MTL and 1 COP further away. Postpedal segments: GM biarticulated; GM 1 with 3 – 4 SE in one row; GM 2 with 4 scattered SE.

Diagnosis. A species of Mecophilus with: known body length in adults more than 8 mm; cephalic plate trapezoidal, with posterior part wider than anterior part (Figs 29 B, 31 B); forcipular tergite elongated, trapezoidal (Figs 29 B, 31 B); denticle of tarsungulum relatively short and positioned close to mid-length of tarsungulum (Figs 29 C, 31 D); distal denticle of trochanteroprefemur and denticle of femur distinctly spaced (Figs 29 C, 31 D). Recorded specimens: a single specimen, ♂.

Distribution. Brazil — Paraná: Foz do Iguaçu (Silvestri 1909 a, 1909 b).

Type specimens. Holotype: ♂, from “ cascata dell’Iguazù (Paranà, Brasile) ” (Silvestri, 1909 a), without collector name and collection date, deposited in MCSG “ Vase type XXVI ”, without specific code. Type locality. Brazil: Paraná: Foz do Iguaçu. Notes on nomenclature. The holotype, which was originally identified as a female by Silvestri (1909 a, 1909 b), was actually found to be a male by direct examination of the specimen by one of us (VCC). Material examined. BRAZIL. Paraná: Foz do Iguaçu, 1 ♂ [holotype] (MCSG “ Vase type XXVI ”).

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CLASSIFICATION

Taxonomic Classification Tree

AnimaliaArthropodaChilopodaGeophilomorphaAphilodontidaeMecophilusMecophilus neotropicus

Mecophilus neotropicus

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Media Files(5)

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).