Parajapyx brunocondei Montejo-Cruz, García-Gómez & Palacios-Vargas, 2021

Montejo-Cruz, Maira, García-Gómez, Arturo & Palacios-Vargas, José G., 2021, Four new species of Parajapyx (Diplura: Parajapygidae) from Mexico with redescription of Parajapyx isabellae aztecus Silvestri, Zootaxa 4948 (2), pp. 221-244 : 230-231

Parajapyx brunocondei Montejo-Cruz, García-Gómez & Palacios-Vargas , sp. nov.

Figs. 27–39 ; Tables 5–6

Type specimens. Holotype (female) on slide: México, Jalisco, Biology station. “Chamela”, 22/ix/1991, litter rainforest, A. García and A. Rodríguez coll. Deposited at “Colección de ácaros y colémbolos”, Facultad de Ciencias , UNAM . Paratypes (three females, five males, two juveniles) on slides: same locality as holotype, 22/ix/1991, 12/ x/1991 and 16/ii/1992. Deposited at “Colección de ácaros y colémbolos”, Facultad de Ciencias , UNAM .

Etymology. This species is named after Dr. Bruno Condé, for his taxonomic contributions to Diplurans.

Description. Holotype (female): body length 2.4 mm. Paratypes (three females, five males, two juveniles): body length range (n=10) 2.4‒3.4 mm. Cuticle ornamentation in the shape of hexagon cells.

Head vertex ( Fig. 27 ) with 10+10 normal which 2+2 smaller, 2+2 normal setae close to the antennae; front with 2+2 macrosetae and 3+3 normal setae; labrum with 1+1 normal setae and 6+6 microsetae. On head venter ( Fig. 28 ) inner lobe with 1+1 normal setae, external lobe with 13+13 normal setae. In place of labial palpus 1+1 macrosetae, 3+3 normal setae, of which two are smaller; admentum with 2+2 macrosetae and 10+10 normal setae; plica orales with 5+5 normal setae, submentum with 2+2 normal setae.

Mandible ( Fig.29 ) with five teeth and four denticles, maxilla with first lamella slender and slightly larger than half of the second, other lamellae pectinate and similar each other; maxillary palp with 9 normal setae and one apical microsensillum.

Antennae ( Fig.30 ) with 18 segments; bacilliform setae number in antennal segments as follows: I‒IV, 0; V‒VI, 1‒2; VII‒IX, 4; XI, 5‒6; XII, 7‒8; XVI, 8; XVII, 7‒10; XVIII more than 10 and four placoid sensilla.

Thoracic chaetotaxy is shown in Table 5 ( Fig.27 ).

Metanoto prescutum sometimes with 1+1 or 1+2 normal setae.

Length of Leg III ( Fig. 31 ) 0.23 mm, with smooth setae; coxa with 3 normal setae and 3 microsetae; trochanter with 3 normal setae; femur with one macrosetae, 9 normal setae and 2 microsetae; tibia with 8 normal setae; tarsus with 10 normal setae; claws symmetrical.

Abdominal chaetotaxy is shown in Table 6 ( Figs.32, 34, 35 ).

Without one macrosetae mp in scutum of the segment I.

Tergite IX (length= 0.15mm) ( Figs. 34, 35 ) slightly shorter than tergite VIII with 2+2 macrosetae above the midline. Tergite X ( Figs. 34, 35 ) with macroseta 1, 3 and 4 reduced. On sternite I ( Fig. 33 ) prescutum with 3+3 normal setae; scutum with 9+9 normal setae and 2+2 microsetae. Typical styles of the genus. Subcoxal organ ( Fig.36 ): Juvenile with 5–7 accompanying setae, 20 glandular setae and 2–3 sensorial setae; adult with 10 accompanying setae, 30–50 glandular setae and 4 sensorial setae. On sternite II to VII ( Fig.33 ) prescutum with 3+3 normal setae and 2+2 microsetae; scutum 11+1+11 normal setae and 3+3 microsetae. Eversible vesicle present on sternites II and III. Female genital papilla valves ( Fig.37 ) each with 8 normal setae, one internal microsensillum and 2 external microsensilla. Male genital papilla ( Fig.37 ) with 6+6 normal setae.

Each cercus ( Figs. 38, 39 ) with five internal teeth; D4 small, D5, D3 and D1 the larger and sometimes with bumps, and D2 medium. Cerci without M4, but with two setae, M2’and a’, close to seta M2. Ventrally, M3 absent and one macroseta (M6´) extra beside M6. Each cercus with 4–7 pores dorsally.

Phyletic affinities. Parajapyx brunocondei sp. nov. is unique, any specie present similar features; is distinguished by femur with one macrosetae, tergite IX with setae above midline and one extra macroseta in cercus ventral. It is difficult to relate to P. brunocondei sp. nov. with other species, the unique feature is 30 setae in subcoxales glandular organs looks like to Parajapyx afer transvaalicus Silvestri, 1931 from South Africa. About corporal chaetotaxy is similar to P. silvestrii sp. nov. but in P. brunocondei sp. nov. not absent macrosetae in mesoscutum and metascutum.

Figures

FIGURES 27–31. Parajapyx brunocondei sp. nov.; 27. Dorsal view of head and thoracic nota (scale 90 µm). 28. Ventral head (scale 90 µm). 29. Maxilla, mandible and labrum (scale 60 µm). 30. Antennal segments VII, VIII, XVII and XVIII (only the dorsal 10 bacilliform sensilla and 2 placoid sensilla shown for XVIII) (scale 60 µm). 31. Leg III (scale 30 µm).

FIGURES 32–35. Parajapyx brunocondei sp. nov.; 32. Abdominals tergites I and II (scale 100 µm). 33. Abdominals sternites I and II (scale 100 µm). 34. Tergites VIII‒X, dorsal view (scale 100 µm). 35. Tergites VIII‒IX, ventral view (scale 100 µm).

FIGURES 36–39. Parajapyx brunocondei sp. nov.; 36. Subcoxal organ (scale 40 µm): 37. Female genital papilla (scale 20 µm). Male genital papilla (scale 20 µm). 38. Cerci dorsal view (scale 80 µm). 39. Cerci ventral view (scale 80 µm).