Campylothorax plagatus, Cipola, Nikolas Gioia & Oliveira, Fábio Gonçalves De Lima, 2016

Cipola, Nikolas Gioia & Oliveira, Fábio Gonçalves De Lima, 2016, A new species of Campylothorax Schött, 1893 (Collembola, Paronellidae) from Brazilian Amazon, with an identification key to the genus, Zootaxa 4109 (4), pp. 487-495 : 493-494

Key to world species of the genus Campylothorax

1 Th II with at least 6 posterior mac; Th III apically round..................................................... 2

- Th II with 2 posterior mac; Th III apically conic................. C. notidanus Soto-Adames, 2016; Dominican Republic

2 Body with varied color or devoid; Abd IV with up to 6 median central mac or absent............................... 3

- Body anteriorly and dens black; Abd IV with 6–9 median central mac....... C. melanocephalus Mitra & Dallai, 1980; Zaire

3 Body color completely dark blue........................................................................ 4

- Body color pattern varied, absent or with transverse or longitudinal bands on Abd III–IV ( Fig. 1 )..................... 6

4 Sutural series of head with S2 and S3 mac ( Fig. 8 ).......................................................... 5

- Sutural series of head devoid of S2 and S3 mac............................ C. mitrai Bellini & Meneses, 2012; Brazil

5 Abd IV with 5 lateral mac; unguis without unpaired tooth........ C. dominicanus Soto-Adames, 2016; Dominican Republic

- Abd IV with 7–8 lateral mac; unguis with unpaired median tooth ( Figs 24–25 )................ C. sabanus ( Wray, 1953)3,4

6 Abd IV color with transverse bands ( Fig. 1 )............................................................... 7

- Abd IV without transverse bands; body color diffuse, absent or with longitudinal bands from Th II to Abd IV........... 12

7 Abd IV with 1 transverse band ( Fig. 1 ).................................................................... 8

- Abd IV with 2 transverse bands; Cuba........................................ C. cubanus Gruia, 1983; Puerto Rico

8 Abd III without transverse bands; unguiculi III lanceolate..................................................... 9

- Abd III with 1 transverse bands; unguiculi III truncate ( Figs 1 , 25 ).............................................. 10

9 Abd IV with 6 anterior central mac on one transverse row and 7 posterior central mac... C. cinctus Schött, 1927; Cameroon

- Abd IV without transverse row of mac and 4 posterior central mac............. C. cassagnaui Mitra & Dallai, 1980; Brazil

10 Abd IV with slim complete transverse band; Abd IV with 5 or less posterior central mac ( Figs 1 , 20 )................. 11

- Abd IV with irregular transverse band occupying more than half of the segment; Abd IV with 6 posterior central mac........................................................................... C. sabanus ( Wray, 1953)3,4; Puerto Rico

11 Dorsal head without S 5i mac; Abd IV with 5 lateral mac; dens with 2 row of distal spines ( Figs 3 , 15 , 24 ).............................................................................................. C. plagatus sp. nov.; Brazil

- Dorsal head with S 5i mac; Abd IV with 8 lateral mac or more; dens with 1 row of distal spines................................................................................. C. viruaensis Santos, Cipola & Bellini; Brazil (in press)

12 Body color diffuse or with longitudinal bands.............................................................. 13

- Body without pigment; Th II with 6 posterior mac............... C. hexosetosus Soto-Adames, 2016; Dominican Republic

13 Abd V–VI with pigment.............................................................................. 14

- Abd V–VI depigmented............................................................................... 15

14 Body color with longitudinal band laterally on Th II to abd IV; furcula with dark pigment.. C. schaefferi Börner, 1906 ; Brazil

- Body color completely diffuse, Th II fully pigmented; furcula depigmented; Puerto Rico.. C. sabanus ( Wray, 1953)1,2; Brazil

15 Dens with 1 row of dental spines.......................................... C. longicornis Schött, 1893; Cameroon

- Dens with 2 row of dental spines.......................................... C. camelinus Womersley, 1930; Guiana

Figures

FIGURES 1 – 6. Campylothorax plagatus sp. nov.: 1, habitus of a specimen in alcohol (Ant III – IV missing); 2, tergal S-microchaeta of Th II, Abd I and III; 3, sens type I of Th II to Abd V (except Abd I); 4, sens type II of Abd IV; 5, central chaetotaxy of Abd II; 6, SEM photograph of right head side. Scale bars (2 – 4): 5 µm; scale bars (5): 10 µm.

FIGURES 7 – 14. Campylothorax plagatus sp. nov.: 7, symbols used in detailed chaetotaxy schemes; 8, dorsal chaetotaxy of head; 9, Ant I dorsal chaetotaxy (right); 10, ventral chaetotaxy of head; 11, prelabral and labral chaetotaxy; 12, basolateral and basomedian field; 13, labial papillae; 14, maxillary palp.

FIGURES 22 – 31. Campylothorax plagatus sp. nov.: 22, trochanter I chaetotaxy; 23, trochanteral organ; 24, foot I complex; 25, foot III complex; 26, collophore; 27, male genital plate and sperm duct; 28, manubrial plate; 29, dental spines chaetotaxy; 30, distal dens and mucro (lateral view); 31, mucro (dorsal view).

FIGURES 15 – 21. Campylothorax plagatus sp. nov.: dorsal chaetotaxy; 15, Th II; 16, Th III; 17, Abd I; 18, Abd II; 19, Abd III; 20, Abd IV; 21, Abd V.