Heterolatzelia nivalis Verhoeff 1897

Autor: Makarov, Slobodan E., ��ur��i��, Bo��idar P. M., Tomi��, Vladimir T., Ra��a, Ton��i, Ra��a, Biljana, ��ur��i��, Sre��ko B., Miti��, Bojan M., Lu��i��, Luka R.
Rok vydání: 2011
Předmět:
DOI: 10.5281/zenodo.6186624
Popis: Heterolatzelia nivalis Verhoeff, 1897 Syn.: Heterolatzelia nivalis nivalis Verhoeff, 1897 Heterolatzelia nivalis rupivaga Verhoeff, 1899, new synonymy Heterolatzelia nivalis absoloni Attems, 1951 Material examined. Type-series of H. nivalis is contained in two vials under number A 20060140 (BSCM). The first vial contains the holotype and two heads and body parts of probably two paratype males; the second vial contains one paratype juvenile with 22 somites + T, two paratype juveniles with 18 somites + T, and parts of three paratype specimens (in our opinion, probably one female with 27 somites + telson, and two specimens belonging to the VI or VII stadia). Both vials are labeled as follows: Heterolatzelia nivale, Verhoeff, 1897, Bjelasnica, Etk. Nr. 525, Tier m. Original det.-Etk., (Typus), Ehem. Trockenmat. Type-series of H. nivale rupivagum is contained in two vials (BSCM). The first vial contains a holotype male and three paratype females; the second contains one paratype male and one paratype female. Both vials are labeled as follows: Heterolatzelia nivale rupivagum, Verhoeff, Plasa, Alpin, Etk. Nr. 524, Tier m., Original det. Etk., Typus-Verdacht, ehn. Trockenmant). Syntypes of H. nivalis absoloni included a female and dissected male, as well as slides with posterior gonopods and leg-pairs 6, 7 and 10, from Ponor Pit, Gatačko polje, Trebinje region, Republica Srpska, Bosnia and Hercegowina (NHMV) (photos by Edmund Schiller). Remarks. After reexamination of the type material we interpret the structure of the anterior gonopods in the following way. The outer anterior coxal finger-shaped process (sensu Mr��iċ 1992) or ���Aussenfinger��� (sensu Verhoeff 1897, 1899) we assigned as angiocoxite impaling its development from the wall of the coxal podomere (Fig. 21, a). We assume that ���Innenarm��� (sensu Verhoeff 1897, 1899) represents a colpocoxite, derived from the coxal glands (Fig. 21, b). We found that the medial process, inner anterior coxal process (sensu Mr��iċ 1992) or even ���Grundtheil eines Aufsatzgebildes mit der Sperma������ (sensu Verhoeff, 1897, plate XVIII, Fig. 10, sp) represents an independent structure from both the colpocoxites and the angiocoxites, and even may be the result of the spreading of the lateral side of the sternite (Fig. 21, f). Comb-like process (���Femoroide��� sensu Verhoeff 1897, 1899) is fused with the base of the angiocoxites on the caudal side (possibly derived from coxa). The posterior gonopods consist of a unique ladle-shaped coxite (Fig. 22, d), devoid of the apical process characteristic for the new genus. Such interpretation of the gonopodal elements is useful in the interpretation of phylogeny within heterolatzeliids, as well as within related genera belonging to different families. In the original description of H. n. rupivaga, as one of the main characters for distinguishing the new subspecies from its nominal species, Verhoeff (1899) noted that both coxites on the posterior gonopods touch each other on the mesal sides. The posterior gonopods in heterolatzeliids definitely have only a protective role for the anterior apparatus. The position of the coxites or their contact on the mesal side or not (Figs. 22���23) is insufficient for designation as a character of a specific level. Moreover, we indicate in the description of the new genus that the anterior gonopods, especially the angiocoxites and colpocoxites, show a certain degree of intraspecific or individual variability. Between the three subspecies, H. nivalis nivalis, H. nivalis rupivaga, and H. nivalis absoloni there exists only a very modest variation in the shape of the angiocoxites and colpocoxites, as well as the position of the posterior coxites. This variation seems to be nothing more than interpopulational or even individual, as revealed by our comparative analyses of the type material and comparison with the original description. Also, in all analyzed specimens the exterior macrochaetae is positioned posteriorly in relation to the anterior and median ones. Values for the macrochaetal index CIX (15) are = 0.48���0.71 (H. nivalis nivalis) and 0.4���0.5 (H. nivalis rupivaga), median index MIX (15) = 0.50���0.57 (H. nivalis nivalis) and 0.40���0.49 (H. nivalis rupivaga), and values for the macrochaetal angle are MA (15) ��� 155 (H. nivalis nivalis) and 159 (H. nivalis absoloni). These facts lead us to synonymize all the subspecies (H. n. rupivaga, H. n. absoloni) under the nominal Heterolatzelia nivalis species. Heterolatzelia durmitorensis Guli č ka, 1968 Syn.: Heterolatzelia cornutum Gulička, 1968 Material examined. Six juveniles from Sto��ka Peċina Cave, Stozi, Mt. Golija, Montenegro, 10. viii 2010 by Iva Njunjiċ (IZB 1224���1229); one juvenile from Crnogorska Jama Cave, Vi��njiċa Do, Mt. Golija, Montenegro, 7. viii 2010 by Iva Njunjiċ (IZB 1230); two juveniles from Crno Jezero Lake, Mt. Durmitor, Montenegro, 7. vi 1995 by Vladimir Pe��iċ (IZB 1231���1232). Remarks. Mr��iċ (1992) examined numerous samples of H. durmitorensis from different localities on Mt. Durmitor, and found that Gulička���s (1968) description of H. cornutum is probably the result of damaged gonopods. Moreover, he explained that Attems��� (1951) determination of a species from Mt. Durmitor (referred to as H. nivalis nivalis) was erroneous because it actually represents a H. durmitorensis species. H. durmitorensis is small heterolatzeliid, 9���12 mm long, with small lateral keels (Fig. 25). The exterior macrochaetae is positioned considerably posteriorly in relation to the anterior and median ones. Macrochaetal index CIX (15) = 1.05. Median index MIX (15) = 1. Macrochaetal angle MA (15) ��� 140 (all values are for juveniles in stadium VI). Angiocoxites (= outer anterior coxal finger-shaped process) are elongated, almost straight, and considerably longer than other gonopodial elements (in H. nivalis angiocoxites are C-shaped and almost the same height as colpocoxites). Colpocoxites are more or less triangular, supplied with medial coxal shred (Mr��iċ, 1992; Fig. 13, C and D) (in H. nivalis colpocoxites are subquadrangular and without coxal shred). Posterior gonopods are similar to the nominal species. According to the characteristics of the body architecture and structure of anterior gonopods, we retained species status for this heterolatzeliid.
Published as part of Makarov, Slobodan E., ��ur��i��, Bo��idar P. M., Tomi��, Vladimir T., Ra��a, Ton��i, Ra��a, Biljana, ��ur��i��, Sre��ko B., Miti��, Bojan M. & Lu��i��, Luka R., 2011, Revision of the family Heterolatzeliidae (Diplopoda, Chordeumatida), pp. 33-44 in Zootaxa 2994 on pages 38-41, DOI: 10.5281/zenodo.202142
{"references":["Verhoeff, K. W. (1897) Ueber Diplopoden aus Bosnien, Herzegowina und Dalmatien. III Theil: Chordeumidae und Lysiopetalidae. Archiv fur Naturgeschichte, 63, 181 - 204.","Verhoeff, K. W. (1899) Zur vergleichenden Morphologie, Phylogenie, Gruppen- und Art-Systematik der Chordeumiden. Archiv fur Naturgeschichte, 65, 95 - 154.","Attems, C. (1951) Neue Hohlen-Myriopoden, gesammelt von Professor Absolon. Osterreichishe Akademie der Wissenschaften, 10, 1 - 6.","Mrsic, N. (1992) Biokoviella mauriesi gen. nov., sp. nov. (Biokoviellidae fam. nov.), Macrochaetosomatinae subf. nov. (Anthogonidae) and superfamily Cleidogonoidea of the western Balkans (Craspedosomidea, Diplopoda). Razprave IV razreda SAZU, 23, 52 - 91.","Gulicka, J. (1968) Neue diplopoden aus dem Durmitor-gebirge. Annotationes Zoologicae et Botanicae, 45, 1 - 5."]}
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