Genus: Titanoeca

Kvadráty: 6568 5852 6468 5648 5647 7161 7162 6865 5456 5952 5555 6050 5958 7069 5862 6847 7165 6474 7261 7067 6670 6968 6764 7062 6965 6866 7266 5942 6071 7059 7168 6469 6048 5949 6470 6368 6450 6858 5948 5850 6246 6049 6051 5951 6143 7065 7152 7052 6963 6964 5752 5452 5453 6152 5751 6864 5548 5450 5653 5352 6958 7060 5651 6147 7151 6551 5350 6252 6052 6161 6452 6663 6570 5553 5853 5358 6765 5953 6351 6766 6272 6863 5645 5969 6660 6650 5448 6070 6666 6273 6849 5848 6564 6149 6664 6451 5749 5863 5449 6357 6356 5950 6376 6565 6566 6274 6574 6561 6662 6264 5769 6672 6970 6359 6560 5348

	Records by time
Titanoecidae	0-1900	1901-1950	1951-2000	2001+	∑
Titanoeca quadriguttata (Hahn, 1833) Not endangered	4×	26×	341×	118×	489×
Titanoeca schineri L. Koch, 1872 Almost threatened	3×	11×	46×	56×	116×
Titanoeca spominima (Taczanowski, 1866)			4×	7×	11×
Titanoeca tristis L. Koch, 1872 Missing		1×			1×

Bibliography

Prey acceptance and conditional foraging behavior in the cribellate-web spider Titanoeca quadriguttata (Araneae: Titanoecidae)

Spiders employ a wide range of foraging strategies and some are known to use conditional foraging behavior, which is tailored to the type of prey attacked. Little is known about the prey capture behavior of cribellate titanoecid spiders. Here, we investigated the fundamental trophic niche and predatory behavior of a cribellate-web spider, Titanoeca quadriguttata (Hahn, 1833). Juvenile spiders were collected under stones in a quarry and used in the experiment. We offered each individual nine prey types (spider, springtail, termite, cricket, cockroach, beetle, fly, moth, and ant) and observed the frequencies of capture and consumption, and the foraging behavior. We found that Titanoeca quadriguttata accepted many prey types, and thus, that its fundamental trophic niche was wide. The hunting behavior differed among prey types, depending on the size and potential danger of the prey. Two capture behaviors were used to overcome prey on the web. For dangerous and some large prey, such as spiders and crickets, the spider bit its victim and immediately retreated, whereas for innocuous and small prey, such as springtails and flies, the spider bit its victim and held it in the chelicerae. Attacks were administered to different body parts of prey. For example, ants were always bitten on the head, and crickets were bitten on the legs. We conclude that Titanoeca quadriguttata is an euryphagous generalist predator which uses conditional prey capture behavior to catch a variety of prey types.

Gallery

Titanoeca quadriguttata

Titanoeca schineri

Titanoeca spominima

Statistics

By month

By altitude

By collecting method (616 used records)

Zemní past	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	365	51	22	176
Titanoeca schineri L. Koch, 1872	44	16	5	27
Titanoeca spominima (Taczanowski, 1866)	13	0	0	3
Neurčeno	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	53	38	8	131
Titanoeca schineri L. Koch, 1872	53	16	7	68
Titanoeca spominima (Taczanowski, 1866)	0	0	0	3
Titanoeca tristis L. Koch, 1872	0	1	0	1
Individuální sběr	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	89	121	80	143
Titanoeca schineri L. Koch, 1872	15	9	7	17
Titanoeca spominima (Taczanowski, 1866)	4	3	0	5
Prosev	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	16	8	7	18
Titanoeca schineri L. Koch, 1872	1	0	0	1
Smyk	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	12	11	4	18
Titanoeca schineri L. Koch, 1872	0	0	0	1
Fotografie	Males	Females	Juveniles	Records
Titanoeca schineri L. Koch, 1872	0	1	1	2
Pozorování	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	1	0	0	1
Sklepávání	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	5	2	0	1
	Males	Females	Juveniles	Records

By biotope (616 used records)

Neurčeno	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	219	89	35	263
Titanoeca schineri L. Koch, 1872	68	20	9	80
Titanoeca spominima (Taczanowski, 1866)	0	0	0	3
Titanoeca tristis L. Koch, 1872	0	1	0	1
Suché louky	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	88	34	38	60
Titanoeca schineri L. Koch, 1872	6	2	6	9
Lesostepní doubravy	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	68	16	5	39
Skalní stepi na vápenci	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	32	13	7	32
Titanoeca schineri L. Koch, 1872	15	4	1	6
Kamenolomy	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	19	40	14	22
Titanoeca schineri L. Koch, 1872	1	0	0	1
Písčiny	Males	Females	Juveniles	Records
Titanoeca schineri L. Koch, 1872	4	2	2	3
Titanoeca spominima (Taczanowski, 1866)	17	3	0	8
Xerotermní travinobylinná společenstva	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	24	15	0	8
Titanoeca schineri L. Koch, 1872	1	0	1	2
Suché doubravy	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	18	3	1	9
Porosty borůvek	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	15	0	1	5
Titanoeca schineri L. Koch, 1872	3	0	0	3
Kamenité suti nižších poloh	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	13	3	4	8
Stinné skály nižších poloh	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	9	0	4	7
Reliktní bory na skalách	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	4	3	1	6
Těžebny písku a jiných nezpevněných hornin	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	4	1	1	3
Titanoeca schineri L. Koch, 1872	3	5	0	2
Lesní okraje	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	8	0	1	5
Okraje silnic	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	3	0	1	2
Titanoeca schineri L. Koch, 1872	5	2	0	2
Vřesoviště nižších poloh	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	0	1	0	1
Titanoeca schineri L. Koch, 1872	4	6	0	3
Skalní stepi na jiných horninách	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	0	2	3	3
Acidofilní bory	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	7	0	0	3
Výsadby jehličnanů	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	0	2	1	2
Travnaté stepi	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	0	1	4	2
Úhory	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	0	5	0	1
Železniční náspy	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	1	1	0	1
Jeskyně	Males	Females	Juveniles	Records
Titanoeca schineri L. Koch, 1872	0	0	1	1
Suché křoviny	Males	Females	Juveniles	Records
Titanoeca schineri L. Koch, 1872	1	0	0	1
Polní biotopy	Males	Females	Juveniles	Records
Titanoeca schineri L. Koch, 1872	1	0	0	1
Haldy a výsypky	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	1	0	0	1
Suché lesní lemy	Males	Females	Juveniles	Records
Titanoeca schineri L. Koch, 1872	0	1	0	1
Lesy	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	1	1	0	1
Ovocné sady s luční vegetací	Males	Females	Juveniles	Records
Titanoeca schineri L. Koch, 1872	1	0	0	1
Výsadby listnáčů	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	1	0	0	1
Močály	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	2	0	0	1
Pastviny	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	0	1	0	1
Suťové a roklinové lesy	Males	Females	Juveniles	Records
Titanoeca quadriguttata (Hahn, 1833)	4	0	0	1
	Males	Females	Juveniles	Records