Mairata butantan new species

(Figs 4B, 7D, 8C, 9 B–C, 11B, D, 12A–B, E–H, 33B–E, G–L, 34, 39D, 42C, 45D, 46D)

Type specimens. Holotype: ♀, from Parque Ecológico da Mata da Câmara, São Roque, São Paulo, Brazil, 06/2014, V. Calvanese col., deposited in IBSP 3664 . Paratypes: 2♀ and 2♂, same data as holotype, deposited in IBSP 3663 .

Type locality. Brazil: São Paulo: São Roque: Parque Ecológico da Mata da Câmara: 23°31’41”S, 47°6’51”W .

Material examined. BRAZIL: São Paulo: Cotia, Caucaia do Alto, Reserva Morro Alto (23°41’11”S, 47°1’20”W), 12/06/2016, V. Calvanese col., 2♂ (IBSP 3662) ; São Roque, Parque Ecológico da Mata da Câmara (23°31’41”S, 47°6’51”W), 06/2014, V. Calvanese & A. Silva col., 1♀ [holotype] (IBSP 3664) , 2♀ and 2♂ [para- types] (IBSP 3663); 12/04/2015, V. Calvanese col., 3♀ and 1♂ (IBSP 4079) .

Etymology. The epithet is a noun in apposition, referring to the Butantan Institute, recognized worldwide for its promotion of biological research.

Diagnosis. A species of Mairata n. gen. with: around 57–59 leg-bearing segments; known body length in adults 18–23 mm; distal denticle of forcipular trochanteroprefemur with one apical seta (Fig. 33H); coxopleuron with 2–8 large coxal pores in adults, grouped near the metasternite, in both males and females (Figs 12A, E, 33 K–L, 34E–G, 45D); females with ultimate legs not thickened when compared to penultimate legs (Figs 33K, 34A, D–E).

Recorded specimens: 11, including 6♀ and 5♂, from two localities.

Distribution. Brazil—São Paulo: Cotia; São Roque.

Description of holotype. Female (IBSP 3664).

Entire body: length 21, maximum width 0.65. Cephalic plate: anterior and posterior margin rounded, length 0.50 and width 0.45 (length/width ratio 1.11), with little scattered SE. Antenna: length 1.13, ca. 2.2 times as long as cephalic plate; AA II–XIII length/width ratio 0.6–0.9; LAA ca. 3 times as long as AA XIII.

Clypeus: 3+3 LS, 1+1 PS, 5+5 SCS. Mandible: PL with 25 denticles. First maxillae: TFM length0.039 and width 0.03; DA with 2 apical and 2 subapical SL; MPC with 3 apical and 1 subapical SL. Second maxillae: left TSM length 0.07 (1.85 times as long as TFM) and maximum width (basal margin) 0.037; left T3 length 0.01 (cs. 0.5 times as long as T2) and width 0.01 (0.32 times as wide as T2); both TSM with 1 apical SE.

Forcipular segment: FTE length 0.18 (0.36 times as long as cephalic plate) and width 0.56; FPT length 0.04 and width 0.38; FCX length 0.45 and width 0.47 (length/width ratio 0.95); FRL length 0.41, reaching anterior margin of cephalic plate, and maximum width (middle part of TFF) 0.23; FRL with two denticles in TFF and one in TI; FD1 with 1 apical SE; FD2 with 1 apical and 1 subapical SE; FD3 with 1 apical and 2 subapical SE; TA 0.88 times as long as TFF and with small basal DTA.

Walking legs: 59 pairs; left FL length 0.52, 0.75 times as long as second leg; left leg 29 length 0.9. Tergum from the first to penultimate leg-bearing segment: TE 29 length 0.36 and width 0.66 (length/width ratio 0.54), with one anterior row of 8 SE, one posterior row of 8 SE and little SE sparse between the rows; PT 0.6 times as long as TE and with two parallel rows of 5–8 SE. Sternum from the first to penultimate leg-bearing segment: STF oval, slightly narrower in anterior part; ST 29 length 0.40 and width 0.27 (length/width ratio 1.48).

Ultimate leg-bearing segment: MTL trapezoidal, length 0.13 and maximum width 0.30 (length/width ratio 0.43); UPS exposed and not suppressed in middle part, length 0.03 and width 0.38. Ultimate legs: thin, length 1.57, 1.4 times as long as penultimate leg; each CXP with 7 or 8 COP, closely grouped together with MTL. Postpedal segments: GF with 1+1 distal SE.

Known variation. Male: 57 leg-bearing segments; each CXP with 4–6 large COP; ultimate legs with prefemur, femur and tibia wider than long and tarsal article globose, all articles quite hairy; GM biarticulated; GM1 with 5 or 6 SE in one row; GM2 with 7–9 scattered SE.