Striatoandricus cuixarti (agamic)

Striatoandricus barriosi (agamic)

Striatoandricus georgei (agamic)

Striatoandricus maesi (agamic)

Striatoandricus nievesaldreyi (agamic)

Striatoandricus sanchezi (agamic)

Striatoandricus cuixarti n. sp.

[Photos of this gall appear on page 12 of the document]

Gall (Fig. 7b–e): Located in the lower part of the central nerve of the leaf. It appears as a pubescent circular ball of small size (6–9 mm long by 5–6 mm wide), cream-colored sometimes purple. The 2mm thick pubescence is not brittle and completely covers the larval chambers.

Biology: Only asexual females are known. The galls appear in July and the adults emerge in March or April of the following year.

Host: It occurs on Q. frutex Trel. (section Quercus).

Distribution: México (Hidalgo and Estado de México).

Striatoandrius [sic] barriosi n. comb.

The gall is a fused mass of larval chambers as also occurs in S. georgei, S. nievesaldreyi and S. sanchezi n. sp. Galls of S. barriosi occurs in Q. bumelioides Liebm. and Q. insignis M. Martens and Galeotti (section Quercus). 

Also, the authors of the same paper mention that the gall of S. barriosi is similar to that of Andricus guatemalensis (Cameron 1883); this species has been considered incertae sedis by Pujade-Villar et al. (2011) because is not possible to differentiate the species according to the morphology of galls. In the original description, Cameron (1883: 71) mentions that the gall of Cynips guatemalensis is a hard mass covered of a long pilosity, but the adults obtained corresponds to an inquiline Synergus dorsalis Cameron (see the dissertation in Ritchie and Shorthouse 1987).

Stiatoandricus [sic] georgei n. comb.

Andricus georgei

[No gall description given]

Hosts: In Quercus, section Quercus: Q. deserticola Trel., Q. glabrescens × obtusata, Q. glaucoides M. Martens and Galeotti, Q. laeta Liebm., Q. magnoliifolia Née, Q. resinosa Née and Q. rugosa Née (Quercus section); after a reexamen of host by S. Valencia-A, the host mentioned in Pujade-Villar et al. (2011, Q. mexicana Humb. and Bonpl.) is wrong, the correct host is Q. deserticola Trel. All host are new records from this species.

Distribution: México, described from material collected in the Parque Nacional del Bosque del Pedregal (Bosque de Tlalpan, Ciudad de México). Its distribution is extended to have collected it in the states of Hidalgo, Jalisco, Michioacan, Morelos, Puebla and Zacatecas.

Striatoandricus maesi n. comb.

Andricus maesi

[No image or description of the gall is given]

Hosts: Q. segoviensis Liebm., Q. glaucoides Mart. and Gal. and Q. obtusata Humb. and Bonpl. (section Quercus); also probably in Q. potosina Trel., Q. microphylla Née and Quercus nr rugosa (section Quercus, see remarks). 

Distribution: Nicaragua, described from material collected in the cerro de Tisey (Estelí, Reserva Natural Tisey Estanzuela); México (Oaxaca) in this paper and probably also in the following states (see below): Jalisco, Michoacán, Puebla and Zacatecas. First record from México. 

Remarks: Similar galls without any emergence were collected in Zacatecas (México): Mesa de San Gabriel (Q. potosina Trel.) and La Cumbre (Q. microphylla Née); also in Puebla (México): Camotepec (Q. obtusata); in Michoacán (México): Urapan (Quercus sp); and in Jalisco (México): Las Guayabas (Quercus nr rugosa).

Stiatoandricus [sic] nievesaldreyi n. comb.

Andricus mexicanus Kinsey 1920: 309 [non Andricus mexicana Bassett, 1890]
Andricus nievesaldreyi Pujade-Villar 2011; in Pujade-Villar et al. 2011: 32 [new name]

[No description or photos of the gall are included]

Hosts: The first hosts for this species are mentioned here: Q. laeta Liebm., Q. magnoliifolia Née and Q. rugosa Née (Quercus section).

Distribution: México, described from material collected in the Sierra de Nayarit (Jalisco, México). Its distribution also includes in the states of Ciudad México, Hidalgo, Michoacán, Morelos and Tlaxcala. 

Remarks: Kinsey (1920) described Andricus mexicanus from four adults that emerged in 1919 from galls on the upper side of leaves. Those galls were collected in 1900 by Diquet in Sierra de Nayarit (Jalisco, México) presumably from Q. magnifolia Née (= Q. macrophylla Née). Kinsey (1920) assigned to this species the individuals determined as Andricus mexicana Bassett, 1890 and Cynips guatemalensis Cameron, 1883 from the collections of Bassett (1890) at Guadalajara mountains (México) and Cameron (1883) at San Jerónimo (Guadalajara, México), respectively. A solution for the homonymy between Kinsey’s and Bassett’s species was proposed in Pujade-Villar et al. (2011) by changing the name of Andricus mexicanus Kinsey 1920 to Andricus nievesaldreyi Pujade-Villar 2011. The species A. mexicana Bassett and C. guatemalensis Cameron were only described through velvety galls on leaves. Both adults with smooth metasoma (Andricus tecturnarum group) and with striate metasoma (Striatoandricus) emerge from this type of galls from USA and México. Thus, Pujade-Villar et al. (2011) considered those two species incertae sedis until similar galls are collected at the type localities and the adults emerge. 

Striatoandricus sanchezi n. sp.
Agamic generation

[A photo of this gall appears on page 17 of the document]

Gall (Fig. 10b): Adheres to the central nerve on the lower face of the rarely leaves on the lower face. It is presented as a mass of brown wool with circular-looking shape, with a non-brittle pubescence, 2.0–2.5 cm diameter. The pubescence is located above the central core forming a layer of 5–7 mm thick. The central polythalamous, light brown, dense and hard, without separating the larval chambers, which are slightly ovoid (1 × 1.5 mm). The number of larval cameras ranges from 7–15.

Biology: Only asexual females are known. The galls appear in August and the adults emerge in March.

Host: It occurs on Quercus magnoliifolia Née (section Quercus), endemic species from México.

Distribution: México (Jalisco)

A New Genus of Oak Gall Wasp, Striatoandricus Pujade-Villar (Hymenoptera: Cynipidae: Cynipini) from America with Descriptions of Two New Mexican Species