Lanceola sphaerica
Lanceola sphaerica (Vinogradov) (Fig. 13) Lanceola clausi var. sphaerica Vinogradov, 1957: 196, fig. 6. Lanceola sphaerica Vinogradov 1970: 383, 386–388, figs 1, 2. Vinogradov et al. 1982: 73–75, fig. 20. Type material. This species was first described as a variety of L. clausi from two damaged spec...
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2009
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| Online Access: | https://zenodo.org/record/5328074 https://doi.org/10.5281/zenodo.5328074 |
| Summary: | Lanceola sphaerica (Vinogradov) (Fig. 13) Lanceola clausi var. sphaerica Vinogradov, 1957: 196, fig. 6. Lanceola sphaerica Vinogradov 1970: 383, 386–388, figs 1, 2. Vinogradov et al. 1982: 73–75, fig. 20. Type material. This species was first described as a variety of L. clausi from two damaged specimens, a mature female of length 8 mm and a male of length 9 mm, both caught in the Kurile-Kamchatka region of the North-West Pacific. The female from Vityaz Stn. 2076 [43°39’N 149°24’E] at 4200–7800 m and the male from Vityaz Stn. 2208 [49°23’N 158°45’E] at 0–6500 m. Later, Vinogradov (1970) established it as a full species with the availability of a well-preserved male of length 5.5 mm from the same general area; Vityaz Stn. 5626 [45°11’N 152°28’E] at 3000–4000 m. All three specimens are in the ZMMU (Mb–1051 to Mb–1053 respectively). Diagnosis. According to Vinogradov (1957 & 1970). Only known from the above three specimens; females reach maturity at 8.0mm. Habitus like L. clausi but pereon more inflated, especially in females. Head without rostrum. Eyes very small, reniform, without crystalline cones. Antennae 1 as long as head and first pereonite combined; terminal article elongate, slightly longer than twice preceding article. Antennae 2 relatively short, slightly longer than A1. Pereopod 3 similar to but slightly shorter than P4; basis length slightly more than twice merus (slightly less for P4); carpus slightly longer than merus; propodus length 1.2x carpus or longer; dactylus relatively long, length 0.4–0.5x propodus (slightly shorter in female). Pereopods 5–7 with retractile, mostly hooded dactyls. Pereopod 5 slightly shorter than P4; basis length 1.8x merus; carpus slightly longer than merus; propodus slightly longer than carpus, in males slightly expanded distally with strong setae distally on anterior margin; dactylus relatively long (especially in males) pressed against propodus, forming indistinct subchela in males, less so in females. Pereopod 6 slightly longer than P4, or P5; basis length 1.6x ... |
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