Description

Description. Female (CNAN-T 01447): Total length 18.9 mm. Carapace and opisthosoma color brown, pedipalps and legs are brown with red tonalities. Dimensions of the prosoma, opisthosoma, pedipalps segments, and all leg femora are provided in Table 3. Carapace. The frontal margin is almost straight, with one slightly pronounced lobe at each side, lobes are not joined in the middle area. It presents a group of granules widely spaced; lateral and posterior margins with a lighter border, posterior margin concave. Lateral and anteromedial eyes are clearly visible, ocular tubercle black (Fig. 7 A). Sternum. Tri-segmented; all segments clearly sclerotized, the area around segments is sclerotized too. Tritosternum projected anteriorly, elongated, conical, with nine setae on the basal region, one on the medial region, one on the distal region, and two more in the apex. Second segment (tetrasternum) oval with two setae on the distal region and two on the proximal region. Third segment (pentasternum) oval, slightly smaller than the second segment, with two setae on the medial region. Metasternum longitudinally divided, with two setae on the posterior margin of each half (Fig. 7 B). Abdomen. Oblong, color dark brown. Presents patches of light coloration on both sides of each tergite. The carapace is wider than the abdomen (Fig. 7 C). Chelicera. The mesal row of the basal segment of the chelicerae with three teeth, the first is bilobed, placed in the proximal portion, lobe 1 b bigger than 1 a, followed by one tooth shorter in the medial portion, and the third, bigger than the others, placed in the distal region (Fig. 7 D). The ectal row with one conspicuous tooth (tooth 2) with an acuminated apex, placed in the medial region. There is a small keel on the most proximal region (tooth 1) (Fig. 7 F). The mobile segment of chelicerae with four teeth, the first and third are the biggest. Pedipalp. Trochanter: Prolateral face with four spines, spines Tr 1 and Tr 3 placed in medial region, Tr 2 placed near the ventral margin. Tr 3 and Tr 4 subequal in length. Spine lengths: Tr 2> Tr 1> Tr 4 ŻTr 3. Dorsal oblique series of six setiferous tubercles. Dorsomedial area without spines but with two tubercles, the most central of them has half of the size of Tr 3 (Fig. 7 E). Femur: Ventral face with six major spines, Fv 4, Fv 3 a, and Fv 5 a are small, between Fv 5 – Fv 5 a there are two small tubercles, between Fv 6 – Fv 7 there is a tubercle, distal to Fv 7 there is a small spine Fv 8 and one tubercle placed at each side. Spine lengths: Fv 1> Fv 2> Fv 5> Fv 3 = Fv 6> Fv 7> Fv 8 = Fv 4> Fv 5 a> Fv 3 a (Fig. 8 A). Dorsal face with five major spines, spine Fd 4 is a tubercle, between Fd 3 – Fd 5 there are other two small tubercles at each side of Fd 4, there is a small spine Fd 5 a, one tubercle between Fd 6 – Fd 7, Fd 1, and Fd 2 share the same base, Fd 3 is totally separated from Fd 2. Spine lengths: Fd 3> Fd 2> Fd 5> Fd 6> Fd 1> Fd 7> Fd 5 a> Fd 4 (Fig. 8 B). Patella: Ventral face with five major spines. Pv 3 is a tubercle, there is one tubercle proximal to Pv 1, and between Pv 1 – Pv 2. Lengths: Pv 5> Pv 2> Pv 1> Pv 6> Pv 4> Pv 7> Pv 3 (Fig. 8 C). Dorsal face with seven major spines, between Pd 1 – Pd 2 there are two small tubercles and one spine Pd 1 a; proximal to Pd 1 there are three tubercles, Spine lengths: Pd 3> Pd 5> Pd 2> Pd 4> Pd 6> Pd 7> Pd 1> Pd 1 a (Fig. 8 D). Tibia: Ventral face with three major spines, one tubercle between Tv 2 – Tv 3. Spine lengths: Tv 2> Tv 3> Tv 1 (Fig. 8 E). Dorsal face with two major spines, between Td 2 – Td 3 there is one tubercle, over Td 3 there is a small spine, distal to Td 3 there are two small spines, the biggest is here named Td 4, Td 1 is present as a small tubercle. Spine lengths: Td 2> Td 3> Td 4> Td 1 (Fig. 8 F). Tarsus-metatarsus: Internal face with two lines of dorsomedial bristles; suture between the tarsus and metatarsus is not visible. Tarsus without an inconspicuous spine on the proximal end of the dorsomedial surface. Legs. Femora brown. Femora lengths: I> III> II> IV (Table 3). Leg I: Tibia with 29 segments and tarsus broken on the right leg; the left leg with 29 segments in the tibia and the tarsus with 60 segments. Leg IV: Basitibia with three segments. Basitibia-distitibia lengths: BT 1> DT> BT 3> BT 2. Basitarsus and Telotarsus subequal in size. Tarsus tetramerous. Female genitalia. The genital operculum is oval and extends to the second segment of the opisthosoma. Gonopod bases bell-shaped, dorsal surface lightly sclerotized; on the most proximal area, there is a strongly sclerotized line joining both gonopod bases, coloration brown on the most proximal region, and white, with brown tonalities over the entire dorsal surface. Sclerites of the gonopod conical, the base is more than three times wider than the medial and apical regions, apex curved. Sclerite coloration brown at external margins and white on the internal area (Fig. 17 C, Table 6). Variation. Type series measurements and the number of segments in the basitibia IV, Tibia I and tarsus I, are summarized in Table 3. Sternum: Setae over all segments of the sternum are variable in number and position. Pedipalp: Trochanter: the second tubercle of the medial region can be more conspicuous, the biggest tubercle can look like a small spine, between Tr 1 and Tr 2 can present a small spine. Femur: Dorsal face: the size and presence of tubercles between spines are variable, spine Fd 5 a can be absent or present as a tubercle. Patella: Ventral face: Tubercles can be more conspicuous in larger individuals; in some cases, can present a spine Pv 1 - a, and a spine Pv 1 a between Pv 1 – Pv 2. Dorsal face: in some individuals, there is a spine Pd 1 - a. In larger individuals, there is one small spine Pd 8. Tibia: Ventral face: can present one or two small spines between Tv 2 – Tv 3. Dorsal face: Td 1 can be more conspicuous but still small. Legs. The number of segments of the tibia and tarsus of leg I, was variable among the individuals, the number of tibial segments varies between 29 and 42, and the tarsal segments between 60 and 75. In observed specimens, the number of segments did not depend on size or sex (Table 3). Male. Observed males are similar in size to females (Table 3) spination pattern as in females, genital operculum has the posterior margin oval and covers part of the third segment of the opisthosoma. Male genitalia. (CNAN-T 01448): LaM longer than Pi. LoL 1 and LoL 2 subequal in length, both densely covered with minute projections; in LoL 1, projections are tubular, thin, and elongated, placed close together, the insertion base is not visible; in LoL 2 projections are similar to LoL 1, the insertion base is also not visible. In dorsal view, the LoD elongated but shorter than LoL 1 (Fig. 9, Table 6).

Common Names

Taxonomic Hierarchy

Kingdom: Animalia

Phylum: Arthropoda

Class: Arachnida

Order: Amblypygi

Family: Phrynidae

Genus: Phrynus

Species: Phrynus aliciae Chirivi-Joya, 2021