Petalocephala hearsayi Distant

Petalocephala hearsayi Distant Figs. 6E–H. Petalocephala hearsayi Distant 1908: 163. Diagnosis. Female. Externally resembling P. bicolor but lacking marginal brown border to crown, pronotum and claval suture. Crown medially as long as interocular distance, more strongly convergent in front of eyes and apex more narrowly angled compared to that in P. bicolor. Abdominal sternites broadly posteriorly and in some segments laterally bordered by dark brown; female sternite VII posterior margin straight (Fig. 6G). Description. Distant (1908) adequately described the external features of this species. Additional features are as follows. Abdominal sternites broadly posteriorly and in some segments laterally bordered by dark brown. Crown medially carinate, lateral margin straight for very short distance in front of eyes then strongly convergent, apex narrowly and bluntly angled, lateral margins straight; 1.02× as long as interocular width and 1.32× as long as median length of pronotum. Ocelli closer to each other than to adjacent eye. Pronotal lateral margins strongly divergent posteriorly, distance between posterolateral angles 1.2× as long as that between anterolateral angles, 0.74× as long as mesonotum, posterolateral margins adjacent to mesonotum straight. Female sternite VII posterior margin almost straight (Fig. 6G). Material examined. INDIA: HOLOTYPE ♀, E[ast] Ind[ia], [18]61 83 (on reverse), register entry: “India (Barrackpore) Sir John Hearsay” “ Petalocephala hearsay Dist. Type”, “Type”, “ Holotype ”, “NHMUK 010592228”; PARATYPE sex unknown (abdomen missing), “ Sikkim ”; 1♀, Kurseong, 5000’, 10-26.ix.1909 (all BMNH). Remarks. Distant (1908) described this species based on an unknown number of specimens with data: “Sikhim (coll. Dist.)” and a single specimen with data: “Barrackpore (Sir Jno. Hearsay, Brit. Mus.)”. He also designated the specimen from Barrackpore as the holotype.

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2025-04-23
DOI
https://doi.org/10.5281/zenodo.15324733
Primary Topic
Ichthyology and Marine Biology
Type
article
Field-Weighted Citation Impact
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article

Petalocephala hearsayi Distant

Zenodo (CERN European Organization for Nuclear Research)
Ichthyology and Marine Biology
article

Petalocephala hearsayi Distant

article en

Abstract

Petalocephala hearsayi Distant Figs. 6E–H. Petalocephala hearsayi Distant 1908: 163. Diagnosis. Female. Externally resembling P. bicolor but lacking marginal brown border to crown, pronotum and claval suture. Crown medially as long as interocular distance, more strongly convergent in front of eyes and apex more narrowly angled compared to that in P. bicolor. Abdominal sternites broadly posteriorly and in some segments laterally bordered by dark brown; female sternite VII posterior margin straight (Fig. 6G). Description. Distant (1908) adequately described the external features of this species. Additional features are as follows. Abdominal sternites broadly posteriorly and in some segments laterally bordered by dark brown. Crown medially carinate, lateral margin straight for very short distance in front of eyes then strongly convergent, apex narrowly and bluntly angled, lateral margins straight; 1.02× as long as interocular width and 1.32× as long as median length of pronotum. Ocelli closer to each other than to adjacent eye. Pronotal lateral margins strongly divergent posteriorly, distance between posterolateral angles 1.2× as long as that between anterolateral angles, 0.74× as long as mesonotum, posterolateral margins adjacent to mesonotum straight. Female sternite VII posterior margin almost straight (Fig. 6G). Material examined. INDIA: HOLOTYPE ♀, E[ast] Ind[ia], [18]61 83 (on reverse), register entry: “India (Barrackpore) Sir John Hearsay” “ Petalocephala hearsay Dist. Type”, “Type”, “ Holotype ”, “NHMUK 010592228”; PARATYPE sex unknown (abdomen missing), “ Sikkim ”; 1♀, Kurseong, 5000’, 10-26.ix.1909 (all BMNH). Remarks. Distant (1908) described this species based on an unknown number of specimens with data: “Sikhim (coll. Dist.)” and a single specimen with data: “Barrackpore (Sir Jno. Hearsay, Brit. Mus.)”. He also designated the specimen from Barrackpore as the holotype.

Zenodo (CERN European Organization for Nuclear Research)
Openalex Percentile: Top 56%
Ichthyology and Marine Biology
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Petalocephala hearsayi Distant · Zenodo (CERN European Organization for Nuclear Research) (2025) | TGRS Research Map | TGRS