Haasea makarovi, Antić & Akkari, 2020

Antić, Dragan & Akkari, Nesrine, 2020, Haasea Verhoeff, 1895 - a genus of tumultuous history and chaotic recordsredefinition, revision of taxonomy and geographic distributions, with descriptions of two new species from Austria and Serbia (Diplopoda, Chordeumatida, Haaseidae), Zootaxa 4798 (1), pp. 1-77 : 57-64

Haasea makarovi sp. nov.

Figs 31–37 , 38 , 42

Haasea microcorna Strasser, 1971 (sic!)— Pavićević et al. (2012) (misidentification)

Diagnosis. Differs from the other congeners, with exception of H. intermedia , H. lacusnigri , H. microcorna and H. plasana , by the presence of strongly developed anterior lateral process on angioxocite. Clearly differs from those species by the presence of denticulated mesal process (vs. mesal process not denticulated in H. intermedia , H. lacus- nigri, H. microcorna and H. plasana ).

Etymology. The new species is named in honour of our friend and colleague Prof. Dr. Slobodan Makarov for his distinguished work on the Balkan Chordeumatida .

Material examined: NHMW: Holotype ♂, Bezdan Pit , Kamena Gora, near Prijepolje, Serbia, pit-fall traps 06.07.2010, leg. S. Ognjenović & I. Njunjić leg. ( NHMW9472 ) ; Paratypes: 1 ♂ used for photos ( NHMW9473 ) , 1 ♂ used for SEM ( NHMW9474 ) ; 10 ♂♂, 20 ♀♀, ( NHMW9475 ) , same data as holotype. IZB : Paratypes 20 ♂♂, 26 ♀♀, Bezdan Pit , Kamena Gora, near Prijepolje, Serbia, pit-fall traps 06.07.2010, S. Ognjenović & I. Njunjić leg., ( IZB) ; 5 ♂♂, 3 ♀♀, same data except pit-fall traps 20.05– 05.11.2017, M. Kuraica leg. ( IZB) ; 2 ♂♂, 6 ♀♀, same data except pit-fall traps 23.07– 07.12.2019 ( IZB) .

Description. Body in adults with 28 segments (including telson).

MEASUREMENTS. Males 10–11 mm long, vertical diameter of the largest pleurotergites 0.75–0.8 mm. Holotype male 10.9 mm long, vertical diameter of the largest pleurotergite 0.8 mm. Females 9.5–12 mm long, vertical diameter of the largest pleurotergites 0.75–0.9 mm. All individuals are from pit-fall traps, and due to their softened body length may not be realistic.

COLORATION ( Fig. 31A ). Brownish yellow.

HEAD. Setose, frontal side straight in males, slightly convex in females. Labrum with three medial teeth and 5+5 labral and 2+2 supralabral setae (paratype male) ( Fig. 31B ). Mentum semicircular, without setae. Lingual plates with 4–6 setae arranged in one or two rows. Stipites with ca. 20+22 setae ( Fig. 31 C–D). Antennae elongated, slen- der, with dorsomedial and ventromedial row of small papillae-like outgrowths (as in Fig. 2 D–F), 1.6–1.7 mm long in males, 1.5 mm long in females. Length of antennomeres in males (in mm): I (0.08), II (0.18–0.22), III (0.4–0.44), IV (0.21), V (0.36–0.37), VI (0.17–0.18), VII (0.14–0.16) and VIII (0.04–0.05). Length/breadth ratios of antennomeres I–VII: I (1), II (2–2.5), III (5), IV (2–2.3), V (2.8), VI (1.5) and VII (1.8–2). Antennomeres II, IV, V, VI and VII with one, three, one, four and one sensillum, respectively. Lateral to antennal sockets a group of similar papillae-like outgrowths presents (as in Fig. 2C ). Number of ommatidia: 9–10 in 4 rows in both sexes, arranged in triangle, sometimes irregular.

COLLUM. Narrower than head, with six macrochaetae. Anterior edge semi-circular, posterior margin gently concave.

BODY SEGMENTS. With lateral humps. Macrochaetae long and trichoid. CIX (segment 15) = 0.7; MIX (segment 15) = 2.3; PIX (segment 15) = 0.5; MA (segment 15) ~ 115˚.

TELSON. Epiproct with a pair of spinnerets and 3+3 setae (1+1 paramedian, 2+2 marginal). Hypoproct semicircular with 1+1 apical setae. Paraprocts with 3+3 marginal setae.

LEG- PAIRS 1 AND 2 ( Fig. 32 A–B). In both sexes with tarsal combs; prefemora with several long and robust setae; femora and postfemora each with several long and robust setae arranged in a group.

MALE SEXUAL CHARACTERS ( Figs 32 C–I, 34A–B). Leg-pair 2 with genital openings on coxae ( Fig. 32B ). Legpairs 3–7 enlarged. Distal half of tarsi 3–7 with ventral papillae ( Figs 32 C–G, 34A–B). Leg-pair 10 significantly smaller than the rest of the walking legs; with coxal sacks and with a robust, blunt coxal process. ( Fig. 32H ). Legpair 11 with coxal sacks, but no other peculiarities ( Fig. 32I ).

ANTERIOR GONOPODS ( Figs 33 A–B, 34C–F, 35A–E, 36A–G). Typical of the genus Haasea . Mesal process (mp) very characteristic, elongated, slender and strongly curved posteriad, teeth present always on anteromesal lobe and at the end (at least two), sometimes teeth are also present in between ( Fig. 36 C–G). Mesal process very variable in the teeth number, also between left and right angiocoxites in the same specimen. Anterior lateral process (alp) robust, erected and straight, slightly curved posteriad. Posterior lateral process (plp) well-developed, simple, curved posteriad. Posterior lamella (pl) short, vestigial. Mesodistal lobe (mdl) with fimbriae-like outgrowths.

POSTERIOR GONOPODS ( Figs 33C , 35F , 36 H–I). Typical of the genus Haasea , with well-developed two-segmented and setose telopodites (t) and three-branched coxal processes (cp). Anterior branch stronlgy developed, hook-shaped and curved posteriad. Medial (mb) and posterior (pb) branches considerably shorter, lamellate, with extended distal ends.

LEG- PAIR 3 IN FEMALE ( Fig. 37C ). With lateral sternal lobes.

VULVAE ( Figs 35G , 37 A–B). As in general description.

Distribution ( Figs 38 , 42 ). Known only from its type locality, Bezdan Pit in southwestern Serbia.

Comments. Pavićević et al. (2012: 160) stated H. microcorna in the Bezdan Pit. Since we reviewed the same material, we did not find any dissected specimens as well as any H. microcorna there. This statement is probably based on proximity of both type localities the Bezdan Pit ( H. makarovi sp. nov.) and Ušačka Cave (H. microcor- na).

Figures

FIGURE 2. General habitus of Haasea Verhoeff, 1895. A–K. H. flavescens (Latzel, 1884). A, C–E, H–K. Male from Lower Austria, Rekawinkel, Vienna Woods. B, F. Female from Austria, Vienna, Heuberg, Vienna Woods. G. Male from Austria, Vienna, Heuberg, Vienna Woods. A. Head, lateral view. B. Head, anterior view. C. Papillae-like outgrowths lateral to antennal socket, lateral view. D. Right antenna, lateral view. E. Right antennomere 6, ventrolateral view. F. Antennomeres 4 and 5, ventral view. G. Segment 15, dorsal view. H. Apex of midbody macrochaeta. I. Posterior margin of midbody metazona. J. Midbody segments, dorsolateral view. K. Body end, dorsolateral view. Scale bars: 0.2 mm (A, B), 0.1 mm (C, D, F, G, K), 0.05 mm (J), 0.02 mm (E, I), 0.01 mm (H).

FIGURE 31. Haasea makarovi sp. nov. A. Holotype male (NHMW9472), habitus, lateral view.B. Paratype male (NHMW9473), labrum, anterior view. C. Paratype male (NHMW9473), gnathochilarium, ventral view. D. Paratype female (IZB), gnathochilarium, ventral view. Scale bars: 1 mm (A), 0.1 mm (B–D).

FIGURE 32. Haasea makarovi sp. nov., paratype male (NHMW9473). A. Left leg 1, posterior view. B. Left leg 2, posterior view. C. Left leg 3, anterior view. D. Right leg 4, anterior view. E. Left leg 5, posterior view. F. Right leg 6, anterior view. G. Left leg 7, anterior view. H. Right leg 10, posterior view. I. Leg-pair 11, posterior view. Scale bars: 0.1 mm.

FIGURE 33. Haasea makarovi sp. nov., paratype male (NHMW9473). A. Left anterior gonopod, mesal view. B. Right anterior gonopod, lateral view. C. Posterior gonopods, posterior view. Abbreviations: ab—anterior branch; alp—anterior lateral process; mb—medial branch; mdl—mesodistal lobe; mp—mesal process; pb—posterior branch; pl—posterior lamella; plp—posterior lateral process; s—sternum; t—telopodite. Scale bars: 0.1 mm.

FIGURE 34. Haasea makarovi sp. nov., paratype male (NHMW9474). A. Right tarsus 3, anterior view. B. Leg 7, detail with ventral papillae, ventral view. C. Anterior gonopods, anterior view. D. Anterior gonopods, posterodistal view. E. Anterior gonopods, detail of distal part, anterior view. F. Anterior gonopods, detail of distal part, posterodistal view. Abbreviations: a—angiocoxite; alp—anterior lateral process; asl—anterior sternal lobe; f—furrow; mdl—mesodistal lobe; ml—“Opuntia- like” membranous; mp—mesal process; msp—medial sternal process; pc—papillated cone; plp—posterior lateral process; s—sternum; so—seminal opening; Scale bars: 0.1 mm (C, D), 0.05 mm (A, E, F), 0.01 mm (B).

FIGURE 35. Haasea makarovi sp. nov., A. Paratype male (IZB), left anterior gonopod, lateral view. B. Paratype male (IZB), left anterior gonopod, mesal view. C. Paratype male (IZB), left anterior gonopod, detail of distal part, lateral view. D. Paratype male (IZB), left anterior gonopod, detail of distal part, mesal view. E. Paratype male (NHMW9474), anterior gonopods, detail, posterodital view. F. Paratype male (NHMW9474), left posterior gonopod, mesal view. G. Paratype female (IZB), vulvae, ventral view. Abbreviations: a—angiocoxite; ab—anterior branch; alp—anterior lateral process; b—bursa; cp—coxal process; f—furrow; mb—medial branch; mdl—mesodistal lobe; ml—“Opuntia-like” membranous lobe; mp—mesal process; o—operculum; pb—posterior branch; pc—papillated cone; pgp—postgenital plate; plp—posterior lateral process; so—seminal opening; t—telopodite. Scale bars: 0.1 mm (A, B, F, G), 0.05 mm (C, D, E).

FIGURE 36. Haasea makarovi sp. nov., paratype males (IZB). A. Left anterior gonopod, mesal view. B. Left anterior gonopod, lateral view. C–G. Mesal processes, mesal views. H. Right posterior gonopod, mesal view. I. Right posterior gonopod, posterior view. Abbreviations: a—angiocoxite; ab—anterior branch; alp—anterior lateral process; f—furrow; mb—medial branch; mdl—mesodistal lobe; ml—“Opuntia-like” membranous lobe; mp—mesal process; pb—posterior branch; pc—papillated cone; pl—posterior lamella; plp—posterior lateral process; so—seminal opening; t—telopodite. Scale bar: 0.3 mm.

FIGURE 37. Haasea makarovi sp. nov., paratype female (IZB).A. Vulvae, ventral view. B. Postgenital plate, posterior view. C. Leg-pair 3, Anterior view. Abbreviations: b—bursa; o—operculum; sl—sternal lobe. Scale bars: 0.1 mm.

FIGURE 38. Distribution of the genus Haasea.

FIGURE 42. Distribution of H. intermedia Mršić, 1985, H. lacusnigri (Gulička, 1968), H. makarovi sp. nov., H. microcorna (Strasser, 1971), H. plasana (Verhoeff, 1899) and H. vidinensis (Strasser, 1973a).