Klinckowstroemia bifurcata Villegas-Guzman, Pérez & Reyes-Castillo, 2009, sp. nov.
Creators: name: Villegas-Guzman, Gabriel A.
name: Pérez, Tila M.
name: Reyes-Castillo, Pedro
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Klinckowstroemiidae
Klinckowstroemia
Klinckowstroemia bifurcata

description: Klinckowstroemia bifurcata sp. nov.
Material examined. Holotype. Ƥ (CNAC 006514), Hidalgo, Mexico, 2 km Federal Highway Crucero- Tianguistengo (20°40.413' N, 98°40.255' W), 2,080 m, 23 September 2006, pine-oak forest, from Odontotaenius zodiacus (Truqui), O. Francke, A. Valdez and H. Montaño coll., mites found in the alcohol. Paratypes. 4 Ƥ (CNAC 006515- CNAC 006518), 1 3 (CNAC 006519), same data as holotype, from 3 specimens of Odontotaenius zodiacus; 8 Ƥ (CNAC 006520- CNAC 006527), 2 33 (CNAC 006528, CNAC 006529), Hidalgo, Mexico, 2 km Mojonera-Tizapan, municipality Zacualtipan (20°38.107' N, 98°35.981' W), 2,019 m, 22 September 2006, from 4 specimens of Odontotaenius zodiacus, O. Francke, A. Valdez and H. Montaño coll. Mites were on coxa I, mesepisternum and loose in the alcohol. Holotype, 9 paratype females and 3 paratype males deposited in the CNAC, one female paratype each deposited in NMNH, UGA and UMMZ.
Female (n = 13). Body oval. Idiosoma: L = 966 (922–1,088), W = 723 (659–762) (Fig. 1 A).
Ve n tr al idiosoma. Hyaline hood extending to level of coxa I, seta a 1 large and simple (Fig. 2 G), L = 34 (30–37). Tritosternum base wider than long. Tetartosternum (Tst) L = 40 (40–44), anterior W= 124 (112–127) (Fig. 2 E); near the posterior margin is a lyriform sternal pore stp 1. Tetartosternal notch square, shagreened and with a line near the anterior margin. Sternal seta st 1, L = 18 (16–22), bifurcated (Fig. 2 C). Sternal shield (Fig. 2 B) L = 90 (78–91), stp 2 in centre of shield, below it st 2, L = 11 (9–19), simple. Setae st 3, L = 31 (19– 40) and st 4, L = 16 (9–22) near posterior margin of shield, both large and simple, close together (Fig. 2 B). Shield shagreened, without reticulations. Sternogynial shield, L = 68 (62–96); W = 192 (167–201) triangular (Fig. 2 F), shagreened, with stp 3 closer to anterior margin. Sternogynial apodeme short. Latigynial shields, L = 130 (124–146), W = 76 (75–84) each with an oval pore and four setae (Fig. 2 F), medial margin of shield straight, extremity blunt. Mesogynial shield, L = 76 (68–84), W = 106 (96–112), triangular, wider anteriorly and slightly pointed at apex, surface shagreened. Mesogynial condyles extending almost to level of shield apex. Ventral shield, L = 269 (248–288), posterior W = 576 (518–608), shield triangular, truncated posteriorly, surface shagreened, with 12 pairs of small setae (Fig. 1 A). One pore at level of posterior margin of coxa IV. Anal shield, L = 192 (167–218); anterior W = 518 (467–576), with six pairs of simple setae plus longer antero anal seta, L = 25 (17–31), two pairs of pores, one near the anterior margin, the other below the anus.
Gnathosoma. Capitular seta (sc) short and serrate, 12 (9–16). Hypostomal seta hyp 1 long and simple, 62 (56–71). Seta hyp 2 long and serrate, L = 40 (34–47). Seta hyp 3 short and simple, L = 7 (7–19) (Fig. 2 A). Chelicera with barbed seta, movable digit with four teeth, fixed digit with five teeth. Palp setae are simple, av 1 and av 2 on trochanter branched and serrate respectively; dorsal setae of femur pl 1 and pl 2 serrate and feathery respectively (Fig. 2 A). Anterior margin of palp trochanter with blunt process (b) (Fig. 2 H).
Legs. Most setae on leg I serrate, on trochanter ad 1, al 1 and pv 1, genu al 1 and av 1. Serrate setae on leg II: femur av 1 and genu av 1. Serrate setae on leg III: femur av 1, genu pv 1, tibia ad 3 and al 3; on leg IV, genu pv 1, tibia ad 3 and al 3. Other setae simple, except pv 1 on trochanter II–IV lightly barbed (Fig. 2 D).
Male (n = 3). Body oval, similar to female. Idiosoma L = 986–1024, W = 691–736 (Fig. 1 B).
Ve n tr al idiosoma. Tetartosternum L = 50–53, posterior W = 102–112, tetartosternal notch shallow (Fig. 4 A), shagreened, with one line near anterior margin as in female. Sternal seta st 1, L = 19–24, simple. The other sternal setae are microsetae. Sternal shield shagreened, L = 152–155 (Fig. 4 B). Genital opening oval, L = 59–66, W = 87–94. Ventral shield with 32 setae (Fig. 1 B), L = 363–378, posterior W = 608, shagreened. Anal shield L = 179–217, anterior W = 512–544; with six pairs of simple setae plus longer antero anal seta, L = 20–30.
Gnathosoma. Hypostomal seta hyp 1 is long and simple, L = 65–71; seta hyp 2 is serrate and long, L = 43– 50, while seta hyp 3 is simple and shorter, L = 16–17.
Etymology. This name is from Latin bifurcata (= bifurcate) referring to the shape of st 1.
Remarks. This species can be distinguished from all others because sternal seta st 1 is bifurcate; and the tetartosternum, sternal and genital shields are shagreened. Sternal setae st 3 and st 4 are slightly serrated, seta st 3 longest. The mesogynial shield is wider on the posterior margin and the latigynial shield has four small simple setae and a pore. Some setae on the palp and leg I are serrated and feathery. The male has sternal seta st 1 simple and the tetartosternum is similar to that of the female. Klinckowstroemia bifurcata is similar to K. reyesi and K. truncata because these three species have the same number of setae on the latigynial, ventral and anal shields. Klinckowstroemia bifurcata (981) is slightly bigger than K. truncata (820) but is slightly smaller than K. reyesi (1009). Klinckowstroemia bifurcata has four setae on the latigynial shield and sternal seta 3 and 4 are serrate as in K. truncata. Sternal seta 3 is longest as in K. reyesi. Klinckowswtroemia bifurcata has the medial margin of the latigynial shield straight and its extremity blunt, while that of K. reyesi and K. truncata is longer and completely straight.
The specimens were found in decaying trunks at two different localities in the state of Hidalgo, Mexico, but on the same host (Odontotaenius zodiacus). In these localities we collected three and four passalids carrying K. bifurcata. The mites were usually found in the alcohol, only in one case they were located on the passalid’s body, on coxa I and mesoepisternum. Two or more mite species were found on one beetle: one male of K. victoriae, seven (4 Ƥ, 3 33) of K. bifurcata; and another passalid was found with three species, K. bifurcata; K. hunteri and K. valdezi. This association is known as synhospitality (Eichler 1966).
description: Published as part of Villegas-Guzman, Gabriel A., Pérez, Tila M. & Reyes-Castillo, Pedro, 2009, New species of the genus Klinckowstroemia Baker & Wharton from Mexico (Acari: Mesostigmata: Trigynaspida: Klinckowstroemiidae), pp. 1-46 in Zootaxa 2248 on pages 7-8, DOI: 10.5281/zenodo.190717