November Collection Update

I was slightly delayed in composing this, but a number of things have occurred in my collection. For starters, there was the golden orb-weaver exchange detailed in a previous post. Also, I received a large order from Bugs in Cyberspace in the middle of October. This order included three species of roaches, two millipede species, and a baby tarantula, which happens to be my very first one. I had been wanting to acquire some of the roaches in the genus Therea for quite a while, but I had not yet acquired any. This order included two species: the question mark roach (T. olegrandjeani) and the domino roach (T. petiveriana). The question marks require USDA permits to own, and I have the permits to receive and own this species. The domino roach was deregulated as part of a previously mentioned deregulation of roaches, and no USDA permits are needed to own this species. The individuals I received of this species were young nymphs and will take a while to mature, but the adults are beautiful.

The middle marking gives Therea olegrandjeani its common name as it somewhat resembles a question mark.
This adult female domino roach lays small oothecae (egg cases) that are about a centimeter long and differs from roach species that have live young.

The third species of roach from the order was the yellow morph of the Gyna lurida. This species was another one on the aforementioned list of deregulated “plant pests”, and I had read it was a decently easy one to rear. The nymphs are still small, and I have yet to see the adults in person. I have never even seen the normal coloration of this species, other than maybe a few dead specimens, so I am looking forward to watching this species develop.

The nymphs have a very intricate pattern.

Since I have not seen this species before, I do not have any pictures of the adults. The Bugs in Cyberspace YouTube channel was made by Peter Clausen, who sent the shipment, and here is his video showing both color morphs of this species.

My next species from this shipment was the Florida ivory millipede (Chicobolus spinigerus). I acquired a breeding pair, but unfortunately, a couple weeks after the shipment, one, I think it was the male, died. There are plenty of droppings, so the other one has been eating. I am hoping that I am correct that this one is a female as she could still lay fertile eggs and start a colony.

Here is the pair shortly after they arrived and I transferred them to their permanent tank.

The other millipede species I acquired is an Oregon-native: Tylobolus uncigerus. Since Peter Clausen lives in Oregon, he collects this species himself. I acquired five adults, and I hope to breed this species. I am experimenting with keeping this species at cooler temperatures. Since it comes from a cooler region, this species should do better with the cooler temperatures. My only problem experimenting with this has been that the chamber I designed to cool the millipede tank has been malfunctioning. It runs on a thermoelectric device called a Peltier cooler and is controlled by a 12-volt thermostat. The problems arise from the power supply. The power supplies I have used have some sort of safety mechanism that shuts off power when the thermostat tries to modulate the power. I hope that trying a general purpose adapter will just output a steady current and let the thermostat and Peltier cooler do what they are intended to do.

T. uncigerus are not that unique in coloration, but it is an elegant species.

My last acquisition from this shipment was a curly hair tarantula (Tliltocatl albopilosum). This species used to be in the more familiar Brachypelma genus, but it was recently reclassified. My little spider has been eating fairly well, and I have been using rice flour beetle larvae (Tribolium confusum) as feeders. The current enclosure I am using is an approximately 3 ounce, clear vial with coconut fiber substrate. I put an artificial leaf as a hide, yet the spider is quite audacious and just made a burrow against the side of the enclosure. I am looking forward to raising this little tarantula.

My little spider loves these tiny beetle larvae.

On November 8th, I was volunteering at a insectarium, and I was able to take home some extra larva from their Eleodes tank. They recently put a good substrate of mixed organic matter, and these beetles have been breeding out of control. I took a cup of larvae home, and put them in a ten-gallon fish tank filled with rearing substrate comprised of coco fiber, leaf litter, and some decaying organic matter. In addition, I have been adding ground fish pellets to the top of the substrate for protein. It has only be a couple weeks, but the larvae seem to be thriving.

Just a quick peek under a piece of wood in the insectarium’s tank reveals several larvae. There are hundreds more deeper in the substrate.
The larva would not cooperate for a photo and kept trying to burrow into my hand.

I mentioned the Abacion magnum millipedes in my last Collection Update, and I have learned quite a bit more about their nature since then. Talking to a renowned hobbyist, who owns the Invertebrate Dude blog, I learned that this species of millipede might be the Goliathus of millipedes. For those who do not get the reference, Goliathus grubs are carnivorous, whereas most of their relatives are detritivores. Regardless, the hobbyist forwarded the information from a millipede expert, who suspected this millipede species might require a higher protein diet. I am now feeding these millipedes with a fish pellet designed for carnivorous cichlids, and they are eagerly consuming the pellets. This suggests that higher protein may be what this species requires.

This species has minutely detailed ridges.
Within a couple hours of adding the pellets, the millipedes had munched considerable holes in them.

My next species is a common polydesmid in my area: Apheloria tigana. I want to breed this species in captivity as it has a beautiful contrasting colors of yellow and black. I am currently using my basic millipede substrate. I have heard some of the large polydesmids benefit from cooler temperatures, so once I fix the aforementioned glitches with the thermoelectric chamber, these millipedes will join the Tylobolus in the chamber. If I can get these to breed, then I am looking forward to having a large colony in a display tank.

My last find to describe is an unusual centipede. It appears to be in the order Geophilomorpha, but beyond that, I have not be able to narrow it down. If anyone recognizes it from the following photo, then let me know.

I am still working on some new pages and resources on my website. I will be updating my collection list with these new species. I am working on incorporating a guide to the USDA regulations into my website, but there is a reason that this does not really exist as it is hard to address all the complexities and exceptions in even a common taxon, such as Tettigoniidae. Eventually, I will finish this and publish it for people to use.

Giant Golden Orb Weaver Rearing

On August 30th, I received several baby giant golden orb weaver spiders (Trichonephila clavipes) from a local museum where I volunteer. These particular ones were given to me because they were refusing to eat. I attempted to force-feed them, but the picky eaters all died despite my best efforts. The last one, however, happily began construction of a web in the corner of my room. For a short while, I had issues feeding her, yet when I realized that moths actually stuck to her web, feeding became much easier. Light trapping could now serve yet another purpose: to catch food for this little spider. Certain species of spider require a specific humidity level to optimize the effectiveness of their web, and I hope that the heater this winter does not dehydrate the air excessively for her.

The temperatures have become too low to catch large moths, but fortunately, black soldier flies (Hermetia illucens) also stick in this type of webbing easily. Someone who rears these flies in massive quantities for composting gave me some larvae, numbering at least several hundred, in the middle of September. While I could have done a better job with rearing these flies, they have still been developing to adulthood properly and are my spider’s new favorite food. I may have to look to find a supplier of these flies overwinter because they require warm temperatures and generate a smell that will likely prove too much for indoor rearing.

I have yet to measure the humidity of my room, but Spider Pharm (the original source that my spider came from) suggests that they require an above-average humidity and temperature. Regardless, mine has molted properly, and, as previously mentioned, the web has been functioning properly. Two possible consequences of an improper environment have not manifested.

As of November 1st, the spider was returned to the museum for their exhibit. Due to my success with this first spider, the museum gave me another spider to raise. Out of the babies I could choose from, I picked a young female that had fallen during its last molt and bent all her legs. Despite these injuries, the spider is still able to maneuver when she is placed on a proper web, such as the one crafted by my last spider in the corner of my room. She is still somewhat challenging to rear, however, as she cannot move as quickly to capture the insects I put in the web before those insects have a chance to escape. She also seems to be exceptionally timid, possibly as a response to her disability. This becomes a problem with feeding as these spiders are incredibly talented at determining what is in their web. If I try to place an insect in her web with the tongs, then she detects the difference in the vibrations from this insect and refuses to come eat. Eventually, a struggling fly will attract her attention, and she will overcome her fear, provided I keep the tongs still.

These spiders can be bred in captivity and are such interesting captives, so I may reach out to the original source of this spider, the aforementioned Spider Pharm, and see about getting a male. Their website currently lists males as out of stock, but if my current spider is able to fix its deformities when it molts next and the museum does not need her for their exhibit, then I will need a male for breeding. There is a paper linked on the Spider Pharm page that outlines a method for rearing large numbers of young orbweavers. If that method works (and based on the good things I have heard about this company, it will), I will be able to supply the museum with spiders for their exhibit. These spiders have also been nice for dealing with escaped flies in the room. I might put some of the males out in my greenhouse if I do not need them for breeding as they seem to be the right size for controlling a number of the pests in my greenhouse. For obvious reasons, I would not want to put females out in the greenhouse as they are not native to my area.

True spiders in general are lacking popularity relative to their cousins the tarantulas, and certain care requirements dissuade prospective keepers from pursuing orbweavers as pets. Nevertheless, these spiders can make amazing pets and have been decently easy to care for in my experience.

Fun with a Macro Lens

I recently decided to start photographing my pet insects using my macro lens to see if I could get some higher quality photos. I had originally been using my macro lens to get better photos of tiny insects for iNaturalist. Once I started using it on my pets, I realized how useful it was. Even photos of larger insects, such as giant cave roaches (Blaberus giganteus), were much improved with the macro lens. I also started taking photographs of all the different instars of my monarch (Danaus plexippus) caterpillars. For those who are unfamiliar with the term “instar,” an instar number is the number of times a larva has molted, counting hatching as the first molt. Therefore, the first instar is a newly hatched larva. The fourth instar is one that has hatched and then molted three times since.

Some of the best photos I have captured with my macro lens are of my spiders. For example, I managed to catch my pet brilliant jumping spider (Phidippus clarus) in impressive detail. The most impressive part of this lens, though, is the fact that it is just a simple clip-on phone lens. My iPhone pictures are so much improved by this lens that I must recommend the brand: LIEQI. I have their 15x macro, and it is incredibly useful, even for photos that would not seem to require a macro lens.