Euscorpius petarberoni, Tropea & Fet & Parmakelis & Stathi, 2024

Tropea, G., Fet, V., Parmakelis, A. & Stathi, I., 2024, Two New Species Of Euscorpius (Scorpiones, Euscorpiidae) From Bulgaria And Greece, Zoodiversity 58 (1), pp. 1-18 : 2-9

Euscorpius petarberoni sp. n. ( figs 1–16 ; tables 1–3)

urn:lsid:zoobank.org:act:01B01D23-F30B-4893-A31A-17DA8D96A4DF

Euscorpius sp. Clade E4 (part; 113F): Parmakelis et al., 2013 a: 736, fig. 2 ;

Euscorpius sp. 113F: Tropea et al., 2015 a: 16, fig. 21 ;

Euscorpius sp. _Rhodope2_113F: Tropea et al., 2015 b: 11, fig. 20 ;

Euscorpius cf. popovi Clade E4 (part; 113F): Tropea et al., 2022: 317, fig. 25 .

Type material (5 {, 7}). Holotype {: Bulgaria: Blagoevgrad Province, Garmen Municipality, Kovachevitsa , 1000 m, 41°41' N, 23°50'E, 01 June 1999, leg. V. Fet & V. Sakalian ( NHMC) . Paratypes. Bulgaria: Blagoevgrad Province, Garmen Municipality, Kovachevitsa , 1000–1353 m, 41°41' N, 23°50' E, 01 June 1999, leg. V. Fet & V. Sakalian, 2 {, 6} ( NHMC) ; same label, 1 {, 1} ( GTC).

Etymolog y. The specific epithet honours the Bulgarian zoologist Petar Beron (b. 1940).

G e o g r a p h i c r a n g e. Known only from Kovachevitsa in the Western Rhodope Mts., Bulgaria (see map in fig. 33 ).

Diagnosis. A medium-sized Euscorpius species. Colour of adults light to medium brown/reddish, with carapace darker and telson and chelicerae yellowish. A slight darker reticulation or marbling may be present on chelicerae, carapace, legs and metasoma. The number of trichobothria on the pedipalp manus ventral surface is 4 (V 1-3 +Et 1); trichobothria et and est on fixed finger are located distally to the notch of the fixed finger and dsb is located proximally to the centre of notch. The number of ventral trichobothria on the pedipalp patella usually is Pv = 6 (6–7); the number of external trichobothria on pedipalp patella usually is: eb = 4, eb a = 4, esb = 2, em = 4, est = 4, et = 5. The pectinal teeth number mostly is 7 in females and 8 and 9 in males. Chela carina V1 follows a direction toward the external of the trichobothrium Et 1, without forming a “Y” configuration. Dorsal patellar spur well developed. Femur usually more or less as long as wide. Carapace more or less as long as wide. Average distance from centre of median eyes to the anterior margin of the carapace is 42.41 % of the carapace length. Metasomal segment I more or less as long as wide. Metasomal carinae on segment V with serrulated and spaced granules. Ventral row of tarsus III ending with a decentralised spinule, without to form a well distinct “Y” formation. Telson higher than wide in males and from slightly wider than high to as wide as high in females. Fixed finger has a large notch, which begins very proximally, on movable finger the lobe is shifted in a very distal position from the centre of the notch on fixed finger, this asymmetry forms a weak but wide notch on the movable finger.

Description of the male holotype:

C o l o u r a t i o n. Whole colour is medium brown/reddish with a slight darker reticulation or marbling on chelicerae, carapace, legs and metasoma, with reddish carapace and pedipalps and yellow telson and chelicerae; pectines and genital operculum whitish/ivory and the sternites are very light brownish.

Carapace. With a fine granulation on most of surface which becomes larger in the lateral area behind the lateral eyes; anterior edge straight; posterior lateral, anterior median and posterior median furrows are present, the latter less marked; two pairs of lateral eyes and a pair of median eyes, situated distally of the middle, are present; distance from centre of median eyes to anterior margin is 43 % of carapace length.

Mesosoma. Tergites are mostly smooth but laterally with few very little granules; sternites are smooth or very finely punctate. Spiracles small, oval shaped and inclined about 45° downward towards outside.

Metasoma. Dorsal carinae with spaced granules on all the segments; ventrolateral carinae on segment I absent, on segment II and III obsolete or smooth, on segment IV present with a few small granules, on segment V present with serrulated and spaced granules; ventromedian carina on segments I–IV absent, on segment V formed by serrulated and spaced granules placed in a row for most of the length, but in the distal part it is larger; intercarinal spaces on segments dorsally very finely granulated, almost smooth, the remaining parts are mostly smooth.

Telson. Slightly higher than wide. Vesicle almost smooth, with ventral setae of different sizes, especially around the vesicle/aculeus juncture.

Pectines. Teeth number 8/9; middle lamellae 5/5; several microsetae on marginal lamellae, middle lamellae and fulcra.

G e n i t a l o p e r c u l u m. The genital operculum is formed by two longitudinally separated subtriangular sclerites; genital papillae protruding; a few microsetae are present.

Sternum. Pentagonal shape, type 2; more or less as wide as long, deep posterior emargination.

Pedipalps. Coxa and trochanter with tuberculated carinae. Femur: dorsal and ventral internal carinae tuberculated; dorsal external carinae formed by tubercles slightly serrulated; ventral external carinae irregular, present mostly in the proximal 2/5; external median carinae serrulated; anterior median formed by about 10 more noticeable conical tubercles; intercarinal spaces granulated. Patella: dorsal and ventral internal carinae tuberculated, the latter slightly serrulated; dorsal external carinae from smooth and rounded proximally to slightly crenulated distally; ventral external carinae crenulated; intercarinal surface ventrally and internally almost smooth, dorsally and externally granulated. Dorsal patellar spur (DPS) well-developed. Chela: carina D1 is distinctly strong, dark an, mostly smooth with two or three tubercles proximally; D4 formed by dark, very low and weakly marked tubercles; V1 is distinctly strong, dark and crenulated, without forming a “Y” configuration; V3 is rounded, dark, with a few small and scattered granules; intercarinal internal tegument granulated, the remaining parts are from smooth to slightly and finely granulated; fixed finger has a large notch, which begins very proximally, on movable finger the lobe is shifted in a very distal position from the centre of the notch on fixed finger, this asymmetry forms a weak but wide notch on the movable finger. Finger dentition: in the most distal part is present a DD on the tip; MD is formed by very small denticles closely spaced forming a more or less straight line, discontinued at level of the OD; fixed finger has 6/6 OD and 11/12 ID; movable finger has 7/7 OD and 14/14 ID.

T r i c h o b o t h r i a. Chela: trichobothria on the pedipalp manus ventral surface V = 3/3 (V 1-3) + Et 1 = 1/1; the trichobothrium V 4 is situated on the external surface near to the carina V 1; the trichobothria et and est are located distally to the notch, and the trichobothrium dsb is located proximally to the centre of the notch; et-est / est-dsb ratio is about 1 on the right chela and 0.75 on the left. Patella: ventral (Pv): 6/6; external (Pe): et = 5/5, est = 4/4, em = 4/4, esb = 2/2, eb a = 4/4, eb = 4 / 4. Femur: trichobothrium d on femur is proximal to i, while the trichobothrium e is distal to both, situated on dorsal external carina.

Legs. Legs with two pedal spurs; no tarsal spur; the tarsus III is not presents in the holotype; 3 larger flanking pairs of tarsal setae adjacent to the ventral spinules row are presents. Tubercles present on ventral and dorsal surface of all leg femora; they are more marked and darker ventrally; on legs IV the tubercles are few and less evident.

C h e l i c e r a e. Typical of the subfamily Euscorpiinae .

H e m i s p e r m a t o p h o r e. Both right and left hemispermatophores of one specimen were examined. They have a well-developed lamina tapered distally; well-developed basal constriction present; truncal flexure present; median projection with lde, ldi and lb; internal projection distally with 9–10 tines in its crown.

T r i c h o b o t h r i a l a n d p e c t i n a l t e e t h c o u n t v a r i a t i o n. Pectinal teeth in males: 8/8 (1), 8/9 (1), 9/8 (1); in total, 8 in 66.67 % (4) and 9 in 33.33 % (2); mean = 8.33, SD = 0.52. Pectinal teeth in females: 7/7 (6); in total, 7 in 100 % (12); mean = 7, SD = 0. Pedipalp patella trichobothria Pv: 6/? (1), 6/6 (7), 6/7 (2), 7/6 (1),?/7 (1); in total, 6 in 81.82 % (18) and 7 in 18.18 % (4); mean =6.18, SD = 0.39. Pedipalp patella trichobothria Pe: et = 2/5 (1),?/5 (2), 5/4 (1), 5/5 (7), 6/6 (1); in total, 4 in 4.76 % (1), 5 in 85.71 % (18) and 6 in 9.52 % (2); mean = 5.05, SD = 0.38; est =?/4 (2), 2/4 (1), 4/3 (1), 4/4 (8); em =?/4 (2), 4/3 (2), 4/4 (8); esb =?/2 (2), 1/2 (1), 2/2 (9); eb

a

=?/4 (2), 4/4 (10); eb =?/4 (2), 3/4 (1), 4/4 (9).

Figures

Figs 1–2. Euscorpius petarberoni sp. n. holotype {, dorsal and ventral views.

Figs 3–4. Euscorpius petarberoni sp. n. paratype}, dorsal and ventral views.

Figs 5–16. Euscorpius petarberoni sp. n. holotype {(except figs 7 and 14, which are of a paratype}): 5 — carapace; 6 — external view of chela of adult male; 7 — external view of chela of adult female; 8 — dorsal view of pedipalp patella; 9 — ventral view of pedipalp patella; 10 — external view of pedipalp patella; 11 — dorsal view of chela; 12 — ventral view of chela; 13 — telson of adult male; 14 — telson of adult female; 15 — ventral view of the metasomal segment V; 16 — lateral view of the metasomal segment V.

Figs 21–32. Euscorpius trichasi sp. n. holotype {(except figs 23 and 30, which are of a paratype}): 21 — carapace; 22 — external view of chela of adult male; 23 — external view of chela of adult female; 24 — dorsal view of pedipalp patella; 25 — ventral view of pedipalp patella; 26 — external view of pedipalp patella; 27 — dorsal view of chela; 28 — ventral view of chela; 29 — telson of adult male; 30 — telson of adult female; 31 — ventral view of the metasomal segment V; 32 — lateral view of the metasomal segment V.

Figs 19–20. Euscorpius trichasi sp. n. paratype}, dorsal and ventral views.

Fig. 33. Map showing localities of the described species (red square, E. petarberoni sp. n.; green circles, E. trichasi sp. n.)