Streptocephalus simplex Bond, 1943
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publication ID |
https://doi.org/ 10.5281/zenodo.169948 |
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DOI |
https://doi.org/10.5281/zenodo.6264918 |
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persistent identifier |
https://treatment.plazi.org/id/1B2487EC-9F55-6055-FEAE-FD36FDE942E7 |
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treatment provided by |
Plazi |
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scientific name |
Streptocephalus simplex Bond, 1943 |
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Streptocephalus simplex Bond, 1943 View in CoL
Material examined. Specimens were collected from Marathwada (19°53N, 75°23E) and Ranchi (23°23N, 85°23E). Accession numbers are NM/FS/121 and 122, respectively.
Measurements: 20 males (24.3–27.6 mm); 3 females (21.1–25.1 mm).
Description: Male Proximal segment of second antennae is subcylindrical, rolled up ventrally, and the terminal part of antennae is hidden between the distal ends ( Fig. 2 View FIGURE 2 A). Four anterolateral subcrenulate papillae on the proximal segment of second antennae. The proximal being the largest ( Fig. 2 View FIGURE 2 B). Peduncle bears lateral row of slender spines at the distal curve ( Fig. 2 View FIGURE 2 C). Elongate, cheliform “hand”; “thumb” is half length of “finger” bearing an arcuate spur and an anterior “shoulder” opposite the spur. Finger is as long as peduncle and spinose, anteriorly with spines arranged as curved strong spines. At distal bend in anterior ramus of the finger the longitudinal row of spines turns to the medial surface of the ramus and ends on the posterior surface ( Fig. 2 View FIGURE 2 D). Posterior ramus is curved and smooth. Thoracic and abdominal segments are smooth. Bases of proximal portion of penes each with lateral linguiform projections. Proximal nonretractile part of penis bears an anteriorly curved median projection with five spines on the anterior surface ( Fig. 2 View FIGURE 2 E). Eversible portion of penes has two rows of flat, acute spines observed on the entire length of the penis ( Fig. 2 View FIGURE 2 F). Cercopod are lanceolate, narrow, fringed to tip with plumose setae.
Female. Second antennae are flat, oval in shape ( Figs. 2 View FIGURE 2 G, H). Broodpouch extends to fifth abdominal segment ( Fig. 2 View FIGURE 2 I). An orange streak is observed on the ventral side of the brood pouch as in S. dichotomus .
Cyst. The cyst surface is covered with an irregular structure and narrow depressed fields ( Figs. 2 View FIGURE 2 J, K). The ridges are raised, centered fields broad and narrow with pores on their surface.
Remarks. Streptocephalus simplex Bond, 1934 can be distinguished from other species on the basis of the male second antennae, which have strong, curved spines on the posterior ramus; the thumb is shorter than the finger. Also unique is that the cyst surface has narrow depressed fields.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.