Deuteraphorura colchisi Parimuchová, Barjadze & Kováč, 2023

Parimuchová, Andrea, Barjadze, Shalva, Maghradze, Eter & Kováč, Ľubomír, 2023, Two new species of the genus Deuteraphorura Absolon, 1901 (Hexapoda, Collembola, Onychiuridae) from Georgian caves with remarks on the subterranean biodiversity of the Caucasus Mountains, European Journal of Taxonomy 879, pp. 64-82 : 70-74

Deuteraphorura colchisi Parimuchová, Barjadze & Kováč sp. nov.

urn:lsid:zoobank.org:act:AAC4848A-79D3-4A5C-8458-A8CB7BB2EA8F

Fig. 4 , Table 2

Deuteraphorura sp. – Zaragoza et al. 2021.

Etymology

The name is derived from ‘ Colchis ’ – the historical geographical, ethnical and political entity of Georgia which today is located in the west of the country.

Type material

Holotype GEORGIA • ♀; Imereti, Tskaltubo, Satsurblia Cave ; 42.38805000° N, 42.60626700° E; 12 Mar. 2020; Eter Maghradze leg.; hand collecting on wood; IBE FS UPJS.

Paratypes GEORGIA – Imereti, Tskaltubo • 3 ♀♀; Khomuli Cave ; 42.31562° N, 42.63613° E; 11 Apr. 2020; Eter Maghradze leg.; hand collecting on wood, guano, water surface • 1 ♀, 3 ♂♂; Melouri Cave ; 42.38752° N, 42.62819° E; 28 May 2019; Eter Maghradze leg.; pitfall traps with pork liver, hand collecting on guano and speleothems; IBE FS UPJS • 3 ♀♀; Prometheus Cave ; 42.37716° N, 42.60086° E; 13 Feb. 2018; Eter Maghradze leg.; pitfall traps with pork liver, hand collecting on wood, guano and speleothems; IBE FS UPJS • 1 ♀; Datvi Cave ; 42.37444° N, 42.59583° E; 27 Dec. 2019; Eter Maghradze leg.; pitfall traps with pork liver; IZISU • 1 ♀; same collection data as preceding; IBE FS UPJS • 2 ♀♀; Satsurblia Cave ; same collection data as for holotype; IBE FS UPJS • 1 ♂; same collection data as preceding; IZISU • 1 ♀, 1 ♂; Sakadzhia Cave ; 42.36756387° N, 42.59123348° E; 28 Dec. 2020; Eter Maghradze leg.; hand collecting on guano and detritus • 3 ♀♀, 3 ♂♂; Imereti, Khoni, Satevzia Cave ; 42.43153377° N, 42.56590444° E; 10 Feb. 2020; Eter Maghradze leg.; hand collecting on guano and water surface ; • 10 ♀♀, 2 ♂♂; same collection data as preceding; IZISU IBE FS UPJS • 1 ♀, 1 ♂; Imereti, Chiatura, Shvilobisa Cave ; 42.3254° N, 43.26786° E; 8 Oct. 2021; Eter Magradze, Shalva Barjadze, Lado Shavadze, Mariam Gogshelidze leg.; hand collecting on guano, wood and detritus; IBE FS UPJS • 3 ♀♀; Samegrelo, Martvili, Inchkhuri Cave ; 42.45678637°N, 42.40425674°E; 18 Jul. 2020; 10 Jul. 2021; Eter Maghradze, Shalva Barjadze, Lado Shavadze, Mariam Gogshelidze leg.; hand collecting guano, wood, water surface and walls; IZISU • 5 ♀♀; same collection data as preceding; IBE FS UPJS • 1 ♀; Motena Cave ; 42.47657295° N, 42.39126228° E; 10 Jul. 2021; Shalva Barjadze, Lado Shavadze, Mariam Gogshelidze leg.; hand collecting on walls; IBE FS UPJS .

Description

Body length 1.3–2.3 mm in females, 1.85–2.1 in males (average 1.78 mm; n = 46), shape cylindrical ( Fig. 4a ). Colour white to pale brownish in ethyl alcohol. Cuticular granulation fine and uniform, slightly dense around pseudocelli. Antennae almost as long as head, area antennalis relatively well marked. PAO with 10–14 compound vesicles ( Fig. 4c ). Ant. I with 8–9 chaetae in one row, Ant. II with 14–15 chaetae. AOIII with 5 papillae, 5 guard chaetae, 2 sensory rods almost as long as papillae, 2 rough sensory clubs and lateral ms (as in Fig. 5b ). Lateral ms on Ant. IV placed basally at the level of second row of chaetae. Apical organite simple in unprotected cavity. Maxillary outer lobe simple with 1 basal chaeta and 2 sublobal hairs. Labium of AB-type, with 6 proximal chaetae. Basomedian field with 4 chaetae, basolateral field with 5 chaetae. Head ventrally with 4 postlabial chaetae.

Pso formula dorsally as 33/133/3(4)3(4)4(3)5(6)3-4 ( Fig. 4a ) (2 pso on Th. I sometimes appear); ventrally as 12/011/3212 ( Fig. 4b for abdominal ventral pso formula); head ventrally with 1 anterior 1 postero-medial and 1 postero-lateral pso. Psx weakly visible. Subcoxae 1 of I–III pairs leg with 2,2,2 pso.

Dorsal body chaetae only weakly differentiated into macro and mesochaetae. Th. I with 7 chaetae per half. ThII–AbdIII with 3 + 3 medial chaetae respectively. VT with 5–7 chaetae per half, basal chaetae absent. Chaetae on Th. I–III sterna absent. Furca remnant with 2 + 2 thin chaetae in one row. MVO present only in fully adult males in form of 10–20 thickened, short and bent spine-like chaetae only on Abd. III sternum ( Fig. 4d ). Subcoxae 1 of legs I–III 4,4,4 chaetae, subcoxae 2 with 3, 13–14, 14–16 chaetae, trochanters with 8–9 chaetae each and femora with 15, 13–15, 13–15 chaetae, respectively. Tita I–III with 18, 19, 17 chaetae including 9 chaetae in distal whorl. Tita I with 6 + M chaetae in B row and 2 chaetae in C row, Tita II with 7 + M chaetae in B-row and 2 chaetae in C-row, Tita III with 6 + M chaetae in B row and 1 chaeta in C row. Claw without teeth. Empodium with basal lamella, tip of filament reaching two-thirds of the claw length (as in Fig. 5d ).

Ecology and distribution

The species is known only from caves in western Georgia where it inhabits warm caves at low altitudes. By its morphology, it does not display any obvious troglomorphic adaptations.

Remarks

See remarks for D.kozmani sp. nov.

Figures

Fig. 4. Deuteraphorura colchisi Parimuchová, Barjadze & Kováč sp. nov. a. Dorsal chaetotaxy (the same scale as in Fig. 4b). b. Ventral chaetotaxy of abdomen. c. PAO. d. MVO in adult specimen (other than in Fig. 4b).

Fig. 5. Deuteraphorura kozmani Parimuchová, Barjadze & Kováč sp. nov. a. Dorsal chaetotaxy. b. AOIII. c. MVO (enlargment of modified chaeta). d. Tita and claw of leg III (DIC contrast image; chaeta in C-row not visible from this view).