Lepidocyrtinus fabioi, Cipola & Morais & Bellini, 2020

Cipola, Nikolas Gioia, Morais, José Wellington De & Bellini, Bruno Cavalcante, 2020, Review of Lepidocyrtinus Börner, 1903 (Collembola, Entomobryidae, Seirinae): the African species, Zootaxa 4898 (1), pp. 1-110: 48-49

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Lepidocyrtinus fabioi

sp. nov.

Lepidocyrtinus fabioi   sp. nov. Cipola & Bellini

Figs 2 View FIGURE 2 , 39–44 View FIGURE 39 View FIGURE 40 View FIGURE 41 View FIGURE 42 View FIGURE 43 View FIGURE 44 , Tables 1–2 View Table View Table

Type Material. Holotype female on slide ( NHMLA): Republic of the Congo, Poll Departament , Nagbe, LesioLouna Reserve, 03°16’S, 15°28’E ( Fig. 2 View FIGURE 2 ), 364 m., 18.viii.2008, Malaise trap, B Brown coll. 7 paratypes: 2 females on slides ( NHMLA and INPA-CLL 000035), same data as holotype; 1 male, 2 females and 2 juveniles on slides ( NHMLA), same data as holotype, except 25.viii.2008. GoogleMaps  

Diagnosis. Body with dark bands on proximal Ant IV and femur III distally ( Fig. 39 View FIGURE 39 ); head mac A0, A2, A5, M1–2, S3, S5, S6 and Pp5 present; prelabral chaetae ciliated; labial papilla E with l.p. apically finger-shaped and surpassing the base of a.a. ( Figs 40 View FIGURE 40 D–E); basolateral and basomedian labial fields with chaetae E, L1–2 ciliated and r reduced in spine; Th II projected anteriorly and with 5–8 anterior, 5–6 median (m4–4p present, m1ip, m2i2 and m4i mac absent) and 4–5 posterior mac (p2ep as mic, p3 as mac); Th III–Abd II with 4, 1, 3 central mac respectively; Abd IV with 10 central mac and 13–14 lateral mac ( Figs 41 View FIGURE 41 , 42B View FIGURE 42 ); unguis a.t. present; unguiculus pe lamella serrated and with a small proximal tooth; collophore anteriorly with 8 spine-like chaetae and 3 ciliated chaetae apically acuminate, posteriorly with 5 spines, smooth chaeta present ( Fig. 43E View FIGURE 43 ); manubrium ventrally with 2/4 subapical chaetae; manubrial plate with 2 blunt mac abruptly acuminate at the apex; dens without blunt mac ( Figs 43 View FIGURE 43 F–G).

Description. Total length of body (head + trunk) 2.02–3.05 mm (n=4), holotype 2.92 mm. Specimens pale white with dark blue pigments on proximal Ant IV, distal and proximal Ant I, femur II–III distally and proximal tibiotarsus; eyepatches and basal Ant I dark ( Fig. 39 View FIGURE 39 ). Scales present on Ant I to proximal one fifth of Ant IV, ventral and dorsal head, dorsal trunk, legs (except empodium), anterior and posterior collophore, ventral and dorsal manubrium and dens ventrally.

Head. Antennae smaller than the trunk length ( Fig. 39 View FIGURE 39 ); ratio antennae: trunk = 1: 1.33–1.63 (n=2); antennal segments ratio as I: II: III: IV = 1: 1.23–1.5: 1.20–1.39: 2.01–2.48 (present in two paratypes), holotype 1: 1.25: 1.30: missing. Ant IV annulated on distal three quarters, with apical bulb apically unilobed. Ant III not annulated, apical organ with 2 club-shaped sens curved, 3 spiny guard sens, s-blunt sens of different sizes and ciliated chaetae ( Fig. 40A View FIGURE 40 ). Ant I dorsally with 4 median mac and 6 smooth mic at the base, without spines ( Fig. 40B View FIGURE 40 ). Eyes A and B larger, G and H smaller, others subequal, and with 5 ‘IO’ chaetae; head dorsal macrochaetotaxy with 8–9 An, 3 A, 3 M, 3 S, 1 Ps and 1 Pp mac. ( Fig. 40E View FIGURE 40 ). Clypeal formula with 4 (l1–2), 2 (ft), 3 (pf0–1) ciliated chaetae, l1–2 larger than the others, l1 apically acuminate, others subequal ( Fig. 40C View FIGURE 40 ). Prelabral chaetae ciliated and not bifurcated. Labral p0 chaeta without median filament. Labral papillae with two inner conical projections, outer papillae absent. Labial papilla E with l.p. apically finger-shaped and surpassing the base of a.a. ( Fig. 40D View FIGURE 40 ). Basolateral and basomedian labial fields with chaetae M1–2, E, L1–2 ciliated, r reduced in spine. Ventral head with about 14 ciliated chaetae, postlabial formula with 4 (G1–4), 3 (H2–4), 4 (J1–4) chaetae, and 2 larger chaetae, 1 b.c. surrounding the cephalic groove ( Fig. 40F View FIGURE 40 ).

Thorax chaetotaxy ( Fig. 41 View FIGURE 41 A–B). Th II projected anteriorly, a, m and p series with 5–8, 5–6 and 4–5 mac, respectively. Th III a, m and p series with 0, 1 and 4 mac, respectively. Ratio Th II: III = 1.90–1.66: 1 (n=4), holotype   1.68: 1.

Abdomen chaetotaxy ( Figs 41 View FIGURE 41 C–D, 42A–C). Abd I a, m and p series with 0, 1 and 0 mac, respectively, m2i and m4i absent. Abd II a, m and p series with 1, 3 and 0 mac, respectively, m3ep as mic. Abd III a, m and p series with 0, 3 and 2 mac, respectively. Abd IV with 10 central mac on A– T series and 13–14 lateral mac on E– Fe series; at least 9 posterior sens (ps type I, others type II) and 8 posterior mes. Abd V a, m and p series with 1, 4 and 6 mac, respectively. Ratio Abd III: IV = 1: 3.31–4.82 (n= 4), holotype   1: 4.82.

Legs. Subcoxa I with 6 chaetae on a row and 2 psp; subcoxa II with an anterior row of 10 chaetae, posterior row of 2 chaetae and 4 psp; subcoxa III with one row of 8 chaetae and 2 posterior psp ( Fig. 43 View FIGURE 43 A–C). Trochanteral organ with about 37 spine-like chaetae ( Fig. 43D View FIGURE 43 ). Tibiotarsus subdivided on distal two thirds, outer side with 2 proximal larger ciliated chaetae apically acuminate, inner side with 7 mac weakly ciliated. Unguis with 4 inner teeth, b.t. subequal to m.t. in length, a.t. smaller. Unguiculus with all lamellae smooth and acuminate, except pe serrated and with a small proximal tooth; ratio unguis: unguiculus = 1: 0.64. Tibiotarsus smooth chaetae 0.86 smaller than unguiculus; tenent hair 0.91 smaller than unguis outer edge.

Collophore. Anterior side with 14 chaetae, 8 proximal spine-like chaetae, 1 ciliated chaeta, 3 ciliated chaetae apically acuminate and 2 mac distally; posterior side with 9 chaetae, 5 spines, 3 thin ciliated chaetae and 1 smooth chaeta distally; lateral flap with about 17 chaetae, 5 smooth and 12 ciliated ( Fig. 43E View FIGURE 43 ).

Furcula. Manubrium ventral formula with 1, 2 2, 2/4 (subapical), 12 (apical) ciliated chaetae of different sizes plus approximately 11 elongated apical scales per side ( Fig. 43F View FIGURE 43 ); manubrial plate with 2 blunt mac ciliated abruptly acuminate at the apex, 4–5 ciliated chaetae of different sizes and 3 psp. Dens dorsally without blunt mac ( Fig. 43G View FIGURE 43 ).

Etymology. It is named after our friend, the Collembola  researcher Dr. Fabio Gonçalves de Lima Oliveira (USP/RP, Brazil), who helped with this study providing specimens from Africa.

Remarks. Lepidocyrtinus fabioi   sp. nov. resembles especially L. rykei ( Coates 1968)   comb. nov. in reduced macrochaetotaxy, as Th II with 4 mac in m1–2 complex, and Abd I–II with 1 and 3 central mac, respectively ( Figs 41A View FIGURE 41 , C–D). However, L. fabioi   differs from this species by Ant III not annulated (annulated in L. rykei   ), Th II with 4–5 posterior mac (8 in L. rykei   ), Th III with 4 central mac (6 in L. rykei   ), and dens devoided of blunt mac (present in L. rykei   ). Other differences among similar species to L. fabioi   are listed in Table 2 View TABLE 2 .


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