Ityphilus calinus Chamberlin, 1957

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 : 300-304

Ityphilus calinus Chamberlin, 1957

( Fig. 26 )

Ityphilus calinus Chamberlin, 1957:25 , 30; Pereira & Minelli, 1996:110; Foddai et al., 2000:153; Adis et al., 2002:18; Foddai et al., 2002:473; 2004:276; Bonato et al., 2007:3; Pereira, 2010:663.

Diagnosis: An Ityphilus species characterized by having a low number of leg-bearing segments (43). Among the other Neotropical members of the genus, it only shares the same trait with I. donatellae sp. nov.; I. calinus can be principally differentiated from the latter by means of the following selected traits (those for I. donatellae are given in parentheses): “Antennae curved at middle but not truly geniculate”, Fig. 26 (curved at middle, truly geniculate, Figs. 1 , 9, 10 , 12 ); antennae distally slightly thickened, Fig. 26 (antennae distally strongly clavate, Figs. 1 , 9, 10 , 12 ); a.a. XIV longer than wide, in the proportion ca. 1.49: 1 (a.a. XIV wider than long, in the proportion ca. 0.93: 1). Other features differentiating both species, as in Table 1.

Remarks: This species was insufficiently described by Chamberlin (1957) on the basis of a single specimen (male holotype). The original description does not state whether the forcipular tarsungulum is serrate or smooth, lacks information on many other important characters of specific value, and only includes a single figure (illustrating the anterior end of the body), which is herein reproduced as Fig. 26 . However, a few approximate ratios related to antennal articles and cephalic plate (included here in Table 1 as indicative traits for this species), are tentatively deduced from this original figure.

Pereira et al. (2000) stated that the original description of I. calinus is entirely devoid of figures. However that statement was an inadvertent mistake, since “fig. 7” of Chamberlin (on page 23 of his paper) does correspond to this taxon.

The type locality given by this author may be more appropriately cited as follows: Colombia: Valle del Cauca Department: 13 mi. W. of Santiago de Cali. (This town is located in the geographic valley of the Cauca River , on the west bank of the water course, about 1000 m a.s.l., between the Central Cordillera and the Occidental Cordillera of the Andes (very close to the latter)). Chamberlin does not give the altitude a.s.l. of the collecting site (thirteen miles West of the mentioned city as stated above, ( Fig. 35 )) .

The inclusion of Brazil in the geographic distribution of I. calinus by Adis et al. (2002); Foddai et al. (2000, 2002, 2004); Pereira et al. (2000); and Bonato et al. (2007) is not valid, because it was based on the specimens herein identified as I. donatellae sp. nov.

Type locality: “ Colombia: 13 mi. W. of Cali , Valle ” .

Known range: Only known from the type locality.

Figures

FIGURE 35: Map of the Colombian Andean region showing the Oriental, Central, and Occidental Cordillera.The black dot between the two last (in the Cauca River Valley), indicates the approximate location of the type locality of Ityphilus calinus Chamberlin, 1957.

FIGURES 24‑29: (24-25): Ityphilus demoraisi Pereira, Minelli & Barbieri, 1995, (female holotype; Brazil: Amazonas: Adolpho Ducke Forest Reserve): (24) Ultimate leg-bearing segment and postpedal segments, ventral; (25) Right coxal organs, ventral (From Pereira et al., 1995). (26): Ityphilus calinus Chamberlin, 1957 (male holotype; “Colombia: 13 mi. W. of Cali, Valle”): Anterior end of the body, dorsal. (From Chamberlin, 1957). (27): Ityphilus ceibanus Chamberlin, 1922, (type (sex?); Honduras: La Ceiba): Anterior end of body, dorsal. (From Chamberlin, 1922). (28-29): Ityphilus sensibilis Pereira, Foddai & Minelli, 2000, (female holotype; Brazil: Amazonas: 02°34’S, 60°06’W): (28) Clypeus and bases of antennae (a: strong stout seta); (29) Detail of duct and calyx of poison gland in left forcipular telopodite, ventral (a: internal edge of tarsungulum, entirely serrate). (From Pereira et al. 2000). Scale bars: 0.1 mm (28, 29); 0.2 mm (25); 0.3 mm (24); no scales available (26, 27).

FIGURES 1‑8: (1-6): Ityphilus donatellae sp. nov., (female holotype; Brazil: Amazonas: 02°34’S, 60°06’W): (1) Left antenna, ventral; (2) Clypeus and bases of antennae; (3) Left side of first maxillae, dorsal; (4) Forcipular segment, ventral (a: chitin-lines); (5) Ultimate leg-bearing segment and postpedal segments, dorsal; (6) Ultimate leg-bearing segment and postpedal segments, ventral. (From Pereira et al., 2000). (7-8): Ityphilus donatellae sp. nov., (male paratype; Brazil: Amazonas: 02°34’S, 60°06’W): (7) Ultimate leg-bearing segment and postpedal segments, dorsal; (8) Ultimate leg-bearing segment and postpedal segments, ventral. (From Pereira et al., 2000). Scale bars: 0.03 mm (3); 0.1 mm (1, 2, 5-8); 0.2 mm (4).

FIGURES 9‑11: Ityphilus donatellae sp. nov., (female paratype; Brazil: Amazonas: 02°34’S, 60°06’W): (9) Left antenna, dorsal; (10) Contour of antennae, ventral; (11) posterior spermatheca at level of leg-bearing segment 39, ventral (a: spermatheca). Scale bar: 0.1 mm (9-11).

FIGURES 12‑14: Ityphilus donatellae sp. nov., (female paratype; Brazil: Amazonas: 02°34’S, 60°06’W): (12) Contour of antennae and cephalic plate; (13) Chaetotaxy and detail of areolation of cephalic plate; (14) Forcipular segment, cephalic capsule and bases of antennae, ventral (mouthparts and setae, suppressed). Scale bars: 0.1 mm (12, 13); 0.2 mm (14).