Pith Number

pith:IZ77WRJW

pith:2026:IZ77WRJW7PCBGRZV4SZKRGYEO4

not attested not anchored not stored refs resolved

A developmental switch from capillary rectification to elastic catapult enables honeydew ejection in the spotted lanternfly

Elio J. Challita, Elizabeth G. Clark, Jacob S. Harrison, Kendall E. Larson, Miriam F. Cooperband, Nami Ha, Saad Bhamla

Spotted lanternfly nymphs eject honeydew using a capillary rectifier while adults use an elastic catapult.

arxiv:2605.14957 v1 · 2026-05-14 · physics.bio-ph · physics.flu-dyn

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\usepackage{pith}
\pithnumber{IZ77WRJW7PCBGRZV4SZKRGYEO4}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

we show that the spotted lanternfly (Lycorma delicatula) uses distinct release mechanics across ontogeny. Nymphs release honeydew with an anal stylus that acts as a capillary rectifier... Adults use a longer stylus associated with an elastic basal region... Development therefore maintains waste clearance across ontogeny under the same outlet-scale capillary constraint by changing how stylus motion is coupled to the droplet at release.

C2weakest assumption

The reduced-order modeling and Weber-Bond scaling based on measured honeydew properties correctly capture the dominant forces and post-release regimes without significant contributions from unmodeled effects such as viscoelasticity or three-dimensional flow at the contact line.

C3one line summary

Spotted lanternfly nymphs eject honeydew via capillary rectification while adults use elastic compression and catapult release, switching mechanics across development to clear fluid under identical outlet capillary constraints.

References

66 extracted · 66 resolved · 0 Pith anchors

[1] Phloem-sap feeding by animals: prob- lems and solutions 2006

[2] A phloem-sap feeder mixes phloem and xylem sap to regulate osmotic potential 2011

[3] Droplet superpropulsion in an ener- getically constrained insect 2023

[5] Unifying fluidic excretion across life from cicadas to elephants 2024

[6] Adhesive properties of Aphrophoridae spittlebug foam 2024

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-17T23:38:55.325212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

467ffb4536fbc4134735e4b2a89b0477231ed0d71504456983ed38120d143195

Aliases

arxiv: 2605.14957 · arxiv_version: 2605.14957v1 · doi: 10.48550/arxiv.2605.14957 · pith_short_12: IZ77WRJW7PCB · pith_short_16: IZ77WRJW7PCBGRZV · pith_short_8: IZ77WRJW

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/IZ77WRJW7PCBGRZV4SZKRGYEO4 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 467ffb4536fbc4134735e4b2a89b0477231ed0d71504456983ed38120d143195

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6d6ed77c741dd2962643dc96605adfe196ce8381d49710604ccf712f8994fc9",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2026-05-14T15:26:10Z",
    "title_canon_sha256": "1ce71a1aa66467ce8ff5ad250070e4e993dab01ccf0c023365d39aa1ee7eb7d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14957",
    "kind": "arxiv",
    "version": 1
  }
}