Tisamenus lachesis is a stick insect species (Phasmatodea), in the family of the Heteropterygidae endemic to the Philippine islands Luzon and Polillo.

The males grow to about 4.2 to 5.1 centimetres (1.7 to 2.0 in) long and are initially reddish-brown in color with little patterning, which becomes darker with age.

On the pronotum there are three pairs of distinct spines arranged in a group that runs diagonally outwards.

The base of this triangle is attached to the front edge of the mesonotum, is strongly raised and has spines at the corners.

On this, there can be two closely spaced tubercles on the rear edge of the meso- and metanotum, which can rarely be formed as short, blunt spines.

On its second to fifth segments there is a pair of spines pointing diagonally to the side, the length of which decreases from front to back.

The thorax becomes evenly wider from the prothorax to the metathorax, just as the abdomen gradually becomes narrower towards the end, so that the body appears slightly convex on both sides when viewed from above.

[1] Only Oliver Zompro placed the species in the genus Tisamenus together with all other Philippine representatives of Hoploclonia.

His determination of the animal showed that it could be another representative of this species, so that he, following the genus at the time, named it Hoploclonia cf.

Sarah Bank et al included a specimen from Mount Binangonan in Quezon under the name Tisamenus serratorius used at the time for the breeding stock of the species in their molecular genetic studies published in 2021.

The first breeding stocks was collected in 2009 by Joachim Bresseel and Thierry Heitzmann in the province of Quezon on the island of Luzon.

[3][7][8] At the end of November 2008, Heitzmann collected a female in the Quezon National Park, from which another breeding stock presumably belonging to this species can be traced back.

Bressell, Bollens and Mark Bushell also found other, very similar animals on Luzon in the province Aurora near the city of San Luis in Cunayan, which had more or more pronounced spines along the middle of their body.

They readily eat a variety of food plants such as bramble, hazel, firethorn, ivy and Hypericum.