Shearia calycina Mikhaljova, 2000

Nefediev, P. S., 2019, New data on the millipede genus Shearia Mikhaljova, 2000 from the Russian and Mongolian Altais (Diplopoda: Chordeumatida: Diplomaragnidae), Russian Entomological Journal 28 (2), pp. 219-225 : 220

Shearia calycina Mikhaljova, 2000

Figs 1–7 .

Shearia calycina Mikhaljova, 2000: 166 , 167: figs.

Shearia calycina — Mikhaljova, Golovatch, 2001: 110; Mikhaljova, 2004: 163, figs, 164: map; 2017: 200, 201: figs, 134: map; Nefediev, Nefedieva, 2007: 162; Mikhaljova et al., 2008: 53 .

MATERIAL EXAMINED. 5 ♂♂, 1 ♀, 8 juv., Russia, Republic of Altai, Kosh-Agach District, 26 air-km NNW of Belyashi (Dzhazator), floodplain of Karagem River , on left bank near bridge, 49.88593°N, 87.19024°E, valley Populus forest with Larix sibirica , ca 1355 m a.s.l., in litter, 29.VII.2018, leg. P.S. Nefediev.

DISTRIBUTION. This species inhabits SE districts of the Republic of Altai only ( Fig. 1 ).

REMARKS. Endemic to the Russian Altais. Neither the gonopods nor coxae 10, nor coxae 11 of this species have ever been shown using SEM. Therefore, they are given here ( Figs 2–7 ). An examination of males of the species from the ASU collection has revealed a small, two-branched anterior process (ap) on each angiocoxite of the posterior gonopods. This character is well visible in a SEM micrograph ( Fig. 4 ), but it was not specified in the original description [see Mikhaljova, 2000]. Hence, this structure must be included into the description of S. calycina .

Figures

Fig. 1. Distribution of Shearia calycina (triangle) and S. densecava (circle). Previously known localities marked in black, new records given in white. Рис. 1. Распространение Shearia calycina (треугольник) и S. densecava (круг). Чёрным отмечены ранее иЗвестные места находок, новые находки отмечены белым.

Figs 2–7. Shearia calycina, male (Republic of Altai, floodplain of Karagem River): 2–5 — gonopods; 6 — coxae 10; 7 — coxae 11; 2, 4, 6–7 — oral view; 3–5 — caudal view. Scale bars: 1 mm (2–3), 0.4 mm (4–5) and 0.3 mm (6–7). Designations explained in text. Рис. 2–7. Shearia calycina, самец (Республика Алтай, пойма р. Карагем): 2–5 — гоноподы; 6 — коксы 10-й пары ног; 7 — коксы 11-й пары ног; 2, 4, 6–7 — спереди; 3–5 — сЗади. МасШтаб: 1 мм (2–3), 0,4 мм (4–5) и 0,3 мм (6–7). ОбЪЯснение обоЗначений дано в тексте.