Cycladiacampa irakleiae Sendra sp. nov. Figs 1-4, 5-8, 9-14, 15-20, 21; Table 1

Etymology.

The specific epithet irakleiae refers to the island it was found on.

Type locality.

Greece, Cyclades Islands, Irakleia Island: Spilaio Agiou Ioanni cave or Irakleia cave, (36°49'43.74"N, 25°26'12.48"E, 110 m a.s.l.).

Type material.

Male holotype labelled M1-03400 is from Spilaio Agiou Ioanni cave, Notio Aigaio, Irakleia, Irakleia Island, Greece, 22th May 2019, I. Nikoloudakis leg. Two young males, one young female, and one adult female paratypes are labelled M2-03400, M3-03400, H2-03400, and H1-03400, respectively; they are from the same cave, date and collector. Three males and five females paratype labelled M1 to M3-02817 and H1 to H5-02817, respectively, are from the same cave, but they were collected using pitfall traps installed between 26th November 2016 and 26th February 2017, leg. I. Gavalas. All type material was mounted in Marc André II solution, deposited in MZB, Museu de Zoologia de Barcelona, Spain (labelled holotype M1-3400), Coll. AS, private collection of Alberto Sendra, València, Spain (M1 to M3-02817 and H1 to H5-02817), and MHNG, Muséum d’histoire naturelle de Genève (paratypes M2-03400, M3-3400, H2-03400, H1-03400).

Other studied material.

Two specimens from the same cave, and with the same data and collector as the holotype. These were mounted on two separate aluminium stages and coated with palladium-gold.

Description.

Body. Body length 2.5-3.9 mm (males, n = 6), 3.3-6.1 mm (females, n = 7) (Fig. 21, Table 1). The epicuticle is smooth under optical microscope, but under high magnification, it is weakly reticulated, showing irregular and roundish polygonal structures of variable sizes (Figs 7, 8); the body has slightly long, thin clothing setae with thin barbs along distal two-thirds of each seta.

Head. Antennae have 47 antennomeres in three completed and intact antennae; the antennae are approximately ~1.5 times longer than the body’s length, with medial antennomeres two or three times longer than wide and apical antennomere three times longer than wide (Table 1). The cupuliform organ has about 18 complex olfactory chemoreceptors, and each one has two multiperforated concentric folds around a coniform central structure (Figs 1, 2). The distal and central antennomeres have two or three whorls of smooth macrosetae and scattered smooth setae, in addition to a single distal whorl of 8-10 moderately long gouge sensilla (25-30 µm long), and up to two very short coniform sensilla 10-12 µm long (Fig. 3). The proximal antennomeres have typical trichobothria, plus a small coniform sensillum on the third antennomere in ventral position. The frontal process has a moderate coniform protrusion that is covered with few tuberculate setae and a few thin barbs (Fig. 4). The three macrosetae along each side of the insertion line of antennae and x setae have thin distal barbs; The length ratios of a/i/p/x are 39/28/26/23, respectively, in holotype (Fig. 4). The labial palps are suboval with small latero-external sensillum, two guard setae, up to six setae on anterior border, and up to 64 neuroglandular setae in holotype.

Thorax. The thoracic macroseta distribution (Figs 5, 6): pronotum with 1+1 ma, 2+2 la2, 3, 2+2 lp2, 4 macrosetae; mesonotum and metanotum without macrosetae. All macrosetae are long and with thin barbs along basal half to two-thirds of their length; thin marginal setae double the length of the clothing setae, and both have thin distal barbs (Figs 5, 6). The legs are elongated, and the metathoracic legs overpass the end of the abdomen; young adults have relatively longer legs than the largest adults (Table 1). The tibia is always longer than the femur or tarsus (Table 1, Figs 9, 10). Femora I-III have one well-differentiated long dorsal macrosetae each (0.15 mm in holotype) with thin long barbs on the distal four fifths. The calcars have long, thin barbs all over. Tibia I-III have one well-barbed ventral macrosetae. Tarsus have numerous setiform setae along and two dorsal subapical setae similar barbed than clothing setae but much longer (Figs 9-11). The claws are unequal in size, that is, the posterior claw is longer than the anterior claw (1.4-1.5: ratio posterior/anterior). The claws have large lateral crests and their ventral side are noticeably ridged and covered with a micro-granulated surface; the posterior claw is large with a backward overhang (Figs 11-13). The pretarsus has a thick setiform lateral processes covered around with abundant and dense barbs that are bent at the ends almost all over except in the distal part (Figs 11-14).

Abdomen. Distribution of abdominal macrosetae on tergites: 1+1 la (exceptionally 0+1 post5) on IV; 1+1 la, 1+1 post5 on V, 1+1 la, 3+3 (2+3) post3, 4, 5 on VI, 1+1 la, 5+5 post1-5 on VII: 7+7 (8+8) post1-7 on VIII; and 12+12 (13+13) post on IX abdominal segment. All tergal abdominal macrosetae are long and well-differentiated with thin barbs along the distal half to four fifths. Urosternite I with 11+11 well-barbed macrosetae (Figs 15, 16); urosternites II to VII with 10+10 (11+11) macrosetae (Fig. 17); urosternite VIII with 2+2 macrosetae (Fig. 20); urosternal macrosetae are of medium length or longer and have long barbs all around along the distal four fifths. The stylus has an apical, subapical and ventromedial seta completely covered with barbs all around except at the ending part (Figs 17, 19, 20). The two apparently intact cerci are respectively 2.6 and 2.4 times de body length; they have five and seven primary articles apart from the multi-divided basal article (Table 1). The length of the cerci increases from the proximal to distal articles. Each article has a variable number of untidy whorls of thin barbed macrosetae increasing from proximal to distal primary article. All primary articles have a distal short, thin, barbed whorl seta.

Secondary sex characters. Female urosternite I have short coniform appendages, bearing each up to five glandular a1 setae in a apical field (Figs 15, 18).

Male urosternite I have short coniform appendages, bearing each about six glandular a1 setae in a apical field; the posterior edge is slightly enlarged at both sides of the first urosternite, with a glandular field of up to 190 glandular g1 setae arranged from five in lateral to two in the centre of this posterior glandular field; in addition, in an anterior position there are about 40 short setae clearly different from clothing setae for their middle well-barbed part (Fig. 16).