Ityphilus crabilli Pereira, Minelli & Barbieri, 1994

Pereira, Luis Alberto, 2012, A New Dwarf Species, New Distribution Records, And Supplementary Descriptive Notes Of The Centipede Genus Ityphilus Cook, 1899 (Chilopoda: Geophilomorpha: Ballophilidae) From Central Amazonia, Brazil, Papéis Avulsos de Zoologia 52 (25), pp. 291-309 : 298

Ityphilus crabilli Pereira, Minelli & Barbieri, 1994

( Figs. 15-17 )

Ityphilus crabilli Pereira, Minelli & Barbieri, 1994:163 , 164-166; Pereira et al., 1995:326, 327; Adis et al., 1996:168, 169; Pereira & Minelli, 1996:110; Foddai et al., 2000:153; 2002:473; 2004:276; Bonato et al., 2007:3; Pereira, 2010:659-660 .

Type material examined: Holotype female, with 53 leg-bearing segments, body length 21 mm, from BRAZIL: Amazonas : Rio Tarumã Mirím, Igapó ( BE), 4 August 1976, J. Adis legit. ( INPA).

New material examined: BRAZIL: Amazonas: Manaus: INPA (secondary upland forest, unburned), Kempson soil extraction, 25 September 1985, J. Adis et al. leg.: 1 female (with the two spermathecae full of spermatozoa), 49 leg-bearing segments, body length 23 mm; 1 male with 47 leg-bearing segments, body length 15 mm ( MLP) . BRAZIL: Amazonas: secondary upland forest (02°34’S, 60°06’W), 3 January 1991, M.O. de A. Ribeiro leg.: 1 male (with tubula seminifera full of mature spermatozoa), 47 leg-bearing segments, body length 16 mm ( MLP) . Same locality and collector, 6 October 1990: 1 female (with the two spermathecae full of spermatozoa, and with mature ova), 49 leg-bearing segments, body length 22 mm; 6 December 1990: 1 male (with tubula seminifera full of mature spermatozoa), 47 leg-bearing segments, body length 15 mm; 7 November 1990: 1 female (with the two spermathecae full of spermatozoa), 49 leg-bearing segments, body length 16 mm; 1 juvenile (female?) with 1+1 coxal organs only, 49 leg-bearing segments, body length 7 mm ( MLP) . BRAZIL: Amazonas: Lago Janauarí, secondary upland forest (03°20’S, 60°17’W), pitfall traps, 29 December 1995, J. Adis et al. leg.: 1 female (with the two spermathecae full of spermatozoa), 49 leg-bearing segments, body length 15 mm ( MLP) .

Remarks: The localities of Manaus: INPA; secondary upland forest (02°34’S, 60°06’W); and Lago Janauarí

(all in Brazil: Amazonas State), are new for the geographic distribution of I. crabilli .

Additional morphological information:

Female holotype: The following rectifying data can be given on the antennae: ventral and dorsal surface of a.a. II, V, IX and XIII ( Figs. 15, 16 ) with very small specialized sensilla. On the ventral side, these sensilla are represented by two different types: a and b. Type a sensilla are very thin and not split apically ( Fig. 15 : a); type b sensilla, thicker than type a, hyaline, and having two very small apical branches ( Fig. 15 : b). Specialized sensilla on dorsal side represented by three different types: a and b, similar to a and b of ventral side ( Fig. 16 : a, b); and type c sensilla “spine-like” or “claviform” larger and much darker (ochreous) in col- or ( Fig. 16 : c). Number and distribution of specialized sensilla on a.a. II, V, IX and XIII, as in Table 2.

Remarks: The original description by Pereira et al. (1994), only mentions two types of specialized sensilla (hereby individualized as “ type b ” and “ type c ”). The original source of this nomenclature is Pereira et al. (1995).

Post-embryonic variation of coxal organs: the juvenile cited above, has 1+1 coxal organs in the coxopleura of the ultimate leg-bearing segment ( Fig. 17 ); in contrast, mature specimens have 2+2 coxal organs.

Variation: all males recorded up to now have 47 leg-bearing segments, females with 47, 49, 51 or 53 leg-bearing segments.

Type locality: Brazil: Amazonas: Rio Tarumã Mirím.

Known range: BRAZIL: Amazonas : Tarumã Mirím River ; Adolpho Ducke Forest Reserve ; Manaus: INPA; secondary upland forest (02°34’S, 60°06’W); Janauarí Lake .

Figures

FIGURES 15‑18: (15-16): Ityphilus crabilli Pereira, Minelli & Barbieri, 1994, (female holotype; Brazil: Amazonas: Rio Tarumã Mirím): (15) Left a.a. V, ventral (a, b: a, b type sensilla); (16) Left a.a. V, dorsal (a, b, c: a, b, c type sensilla). (17): Ityphilus crabilli Pereira, Minelli & Barbieri, 1994, (juvenile (female?); Brazil: Amazonas: 02°34’S, 60°06’W): Ultimate leg-bearing segment and postpedal segments, ventral. (18): Ityphilus demoraisi Pereira, Minelli & Barbieri, 1995, (male (Specimen “A”); Brazil: Amazonas: 02°34’S, 60°06’W): Ultimate legbearing segment and postpedal segments, dorsal. Scale bars: 0.05 mm (15, 16); 0.2 mm (17); 0.4 mm (18).